GBJ 304-1988 Ventilation and air conditioning engineering quality inspection and assessment standard GBJ304-88
Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Ventilation and Air Conditioning Engineering Quality
Inspection and Evaluation Standard
GBJ304-88
1989
Engineering Construction Standard Full-text Information System
W Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Adjustment Engineering Quality
Ventilation and Air Conditioning
Inspection and Evaluation Standard
304-88
Editor Department: Former Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China Approval Department: People's Republic of China
tt||Effective Date: 1
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Notice on the Issuance of the National Standard "Uniform Standard for Inspection and Assessment of Construction and Installation Project Quality" and Other Six Inspection and Assessment Standards (88) Jianbiao No. 335
According to the former State Construction Commission (79) Jianfa Shi Zi No. 168 document and the former Ministry of Urban and Rural Construction and Environmental Protection (85) Chengke Zi No. 293 notice, the six inspection and assessment standards including "Uniform Standard for Inspection and Assessment of Construction and Installation Project Quality" revised by the former Ministry of Urban and Rural Construction and Environmental Protection have been reviewed by relevant departments and are now approved as national standards for implementation on September 1, 1989. The provisions on elevators in the former national standards "Standard for Inspection and Assessment of Quality of Building Installation Projects" (Building Projects) TJ301-74, "Standard for Inspection and Assessment of Quality of Building Installation Projects" (Pipeline Projects) TJ302-74, "Standard for Inspection and Assessment of Quality of Building Installation Projects" (Electrical Projects) TJ303-75, "Standard for Inspection and Assessment of Quality of Building Installation Projects" (Ventilation Projects) TJ304-74 and "Standard for Inspection and Assessment of Quality of Building Installation Projects" (General Machinery and Equipment Installation Projects) TJ305-75 shall be abolished at the same time.
The six inspection and assessment standards currently approved shall be managed by the Construction Supervision Department of the Ministry of Construction, and the names, numbers and interpretation units of each item are as follows: 1. "Uniform Standard for Inspection and Assessment of Quality of Building Installation Projects" GBJ300-88, and its specific interpretation shall be the responsibility of the China Academy of Building Research. 2. "Standard for Inspection and Assessment of Quality of Building Projects" GBJ301-88, and its specific interpretation shall be the responsibility of the China Academy of Building Research. 3. The specific interpretation of GBJ302-88 Inspection and Assessment Standard for Building Heating, Sanitation and Gas Engineering is the responsibility of Shenyang Construction Engineering Administration. 4. The specific interpretation of GBJ303-88 Inspection and Assessment Standard for Building Electrical Installation Engineering is the responsibility of Zhejiang Provincial Construction Engineering Corporation Industrial Equipment Installation Company.
Engineering Construction Standard Full Text Information System
W.bzsoso.coIEngineering Construction Standard Full Text Information System
5. GBJ304-88 Inspection and Assessment Standard for Ventilation and Air Conditioning Engineering is the responsibility of Shanghai Industrial Equipment Installation Company. 6. GBJ310-88 Inspection and Assessment Standard for Elevator Installation Engineering is the responsibility of Beijing Equipment Installation Engineering Company. The publication and distribution of the above six inspection and assessment standards are the responsibility of China Construction Industry Press. Ministry of Construction of the People's Republic of China
November 5, 1988
Engineering 4 Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Revision Notes
This standard is based on the former National Construction Committee (79) Jianfa Shi Zi No. 168 and the former Ministry of Urban and Rural Construction and Environmental Protection (85) Chengke Zi No. 293 Notice. Shanghai Industrial Equipment Installation Company is responsible for revising the "Standard for Inspection and Assessment of Construction Installation Engineering Quality" TJ304-74 (Ventilation Engineering) (hereinafter referred to as the original standard). After the revision, it was renamed "Standard for Inspection and Assessment of Ventilation and Air Conditioning Engineering Quality".
During the revision process, through extensive investigation and research, the opinions of all parties were integrated, and the "first draft", "draft for soliciting opinions" and "draft for submission" were written. In addition to being sent to various places for soliciting opinions, a preliminary review meeting was held, and finally the draft was finalized at the national review meeting. In view of the current development of construction projects, this standard not only retains the applicable provisions in the original standard, but also adds new content based on the development of ventilation and air conditioning technology in recent years. Such as the production and installation of stainless steel and aluminum plate air ducts, the production and installation of clean system air ducts, components and equipment, and the installation of refrigeration pipes of air conditioners, etc., and adds an appendix on measurement and commissioning.
In the quality grade standard of sub-projects, "main projects" are changed to "guaranteed projects" and "general projects" are changed to "basic projects". Two quality grade standards of "qualified" and "excellent" are stipulated for basic projects, and quantitative indicators are given as much as possible. This standard consists of five chapters, twelve sections and four appendices. In the process of implementing this standard, if you find any problems that need to be modified or supplemented, please send your opinions and relevant materials to Shanghai Industrial Equipment Installation Company for reference in future revisions.
Construction Supervision Department of the Ministry of Construction
October 24, 1988
Engineering Construction Standard Full Text Information System
W.bzsosO.coI Engineering Construction Standard Full-text Information System
Chapter 1
General Provisions·
Chapter 2 Duct and Component Manufacturing and Installation Engineering: Section 1 Metal Duct Manufacturing Engineering
Section 2 Rigid Polyvinyl Chloride Duct Manufacturing Engineering Section 3 Component Manufacturing Engineering
Section 4 Duct and Component Installation Engineering:
Chapter 3 Air Handling Equipment Manufacturing and Installation Engineering Section 1 Air Handling Room Manufacturing and Installation Engineering Section 2
Muffler Manufacturing and Installation Engineering
Section 3
Dust Collector Manufacturing and Installation Engineering
Ventilator Installation Engineering…
Section 4
Chapter 4
Chapter 5
Refrigeration Pipe Installation Engineering
Anti-corrosion and Insulation Engineering
Section 1 Anti-corrosion (Painting) Engineering
Section 2 Duct and Equipment Insulation Engineering·. Section 3 Refrigeration Pipe Insulation Engineering
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Main Inspection Tools for Determination and Adjustment of Ventilation, Air Conditioning and Clean Systems
Glossary
Explanation of Terms Used in This Standard
Additional Notes
Engineering 6 Construction Standard Full Text Information System
W.bzsoso:cOn Engineering Construction Standard Full Text Information System
Chapter 1 General Provisions
Article 1.0.1 This standard is formulated to unify the quality inspection and evaluation methods of building ventilation and air conditioning engineering, promote enterprises to strengthen management, and ensure engineering quality. Article 1.0.2 This standard applies to the quality inspection and evaluation of the production and installation of air ducts, components and air handling equipment for ventilation and air conditioning engineering (including clean engineering with certain clean requirements) of industrial and civil buildings and the installation of refrigeration pipes of air conditioners.
Article 1.0.3 The main indicators and requirements of this standard are proposed in accordance with the provisions of "Construction and Acceptance Specifications for Ventilation and Air Conditioning Engineering" GBJ243-82 (hereinafter referred to as the construction specifications).
When implementing this standard, the provisions of the "Uniform Standard for Inspection and Assessment of Building Installation Engineering Quality" shall also be followed.
Article 1.0.4 The materials and specifications of the materials used in the ventilation and air conditioning projects inspected and assessed by this standard must meet the design requirements and construction specifications. Article 1.0.5 In the guarantee items of this standard, if the number of inspections is not specified, all inspections shall be carried out.
Article 1.0.6 For projects using imported equipment or equipment, as well as expansion and reconstruction projects, the inspection and assessment of their quality can be carried out in accordance with this standard according to specific circumstances.
Chapter 2
Measurement of air duct, component manufacturing and installation projects
Article 2.0.1 This chapter applies to the quality inspection and assessment of the manufacturing and installation projects of air ducts and components of ventilation and air conditioning systems in industrial and civil buildings. Section 1 Metal air duct manufacturing projects
Article 2.1.1 This section applies to the manufacturing projects of thin steel plate, stainless steel plate, aluminum plate and composite steel plate air duct and flange.
Inspection quantity For general ventilation and air conditioning projects, 10% of the manufacturing quantity shall be randomly inspected, but not less than 5 pieces; for clean projects, 20% of the manufacturing quantity shall be randomly inspected, but not less than 5 pieces. (1) Guarantee items
Article 2.1.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.1.3 The bite seams of the air duct must be tight and uniform in width, without holes, half bites, bulging cracks and other defects. The longitudinal bite seams of straight pipes are staggered. Inspection method: Observation and inspection.
Article 2.1.Article 4 Welds must not have defects such as burn-through, leaking welds and cracks. Longitudinal welds must be staggered.
Inspection method Observation and inspection.
Article 2.1.5 All joints of the air ducts, accessories, components and static pressure boxes of the clean system must be tight and leak-proof.
Inspection method Lighting and observation inspection.
Article 2.1.6 The inner surface of the air duct of the clean system must be flat and smooth. It is strictly forbidden to have horizontal joints and to set reinforcement inside the pipe or to use convex ridge reinforcement. Inspection method Observation and inspection.
Article 2.1.7 The air duct of the clean system must be kept clean and free of oil and dust. Inspection method Wipe with white silk cloth for inspection.
（I）Basic items
Article 2.1.8 The appearance quality of the air duct shall meet the following requirements: Qualified: straight corners, evenly hooked arcs, parallel end faces, no obvious warping, and surface unevenness no greater than 10mm; the air duct is firmly connected to the flange, the flange is basically flat, the width is not less than 6mm, and it is close to the flange.
Excellent: straight corners, evenly hooked arcs, parallel end faces, no warping, and surface unevenness no greater than 5mm; the air duct is firmly connected to the flange, the flange is flat, the width is not less than 6mm, and it is close to the flange.
Engineering 8 Construction Standard Full-text Information System
W.bzsosO.coI Engineering Construction Standard Full-text Information System
Inspection method: pull wire, measure with ruler and observe. Article 2.1.9 The flange of the air duct shall meet the following requirements: Qualified: The hole spacing of the flange meets the design requirements and the provisions of the construction specifications, the welding is firm, and no screw holes are set at the weld.
Excellent: On the basis of being qualified, the screw holes are interchangeable. Inspection method: Measurement and observation inspection.
Article 2.1.10 Duct reinforcement shall meet the following requirements: Qualified: Reinforcement is firm and reliable.
Excellent: Reinforcement is firm and reliable, neat, with appropriate spacing, uniform and symmetrical. Inspection method: Observation and hand-wrench inspection.
Article 2.1.11 The appearance of stainless steel plate, aluminum plate and composite steel plate ducts shall meet the following requirements:
Qualified: There are no obvious scratches on the surface of stainless steel plate and aluminum plate ducts, and there is no damage on the surface of composite steel plate ducts.
Excellent: There are no defects such as scratches, pits, etc. on the surface of stainless steel plate and aluminum plate ducts, and there is no damage on the surface of composite steel plate ducts.
Inspection method: Observation inspection.
(III) Allowable deviation items
Article 2.1.12 The allowable deviation and inspection method of the manufacturing dimensions of ducts and flanges shall comply with the provisions of Table 2.1.12.
Permissible deviation and inspection method of duct and flange manufacturing dimensions Item
Outer diameter of circular duct
e>300mm
e>300mm
Engineering Construction Standard Full-text Information System
Permissible deviation
Table 2.1.12
Inspection method
Measure the diameters at 90° with a ruler
WEngineering Construction Standard Full-text Information System
Large side of rectangular duct
Diameter of circular flange
Side length of rectangular flange
≤300mm
>300mm
Difference between two diagonals of rectangular flange
Flange flatness
Flannel weld flatness at the joint
Allowable deviation
Measurement inspection
Inspection method
Measure the diameters at 90° with a ruler
Measure the four sides with a ruler
Measurement inspection
Put the flange on the platform and check with a feeler gauge
Section 2
Hard polyvinyl chloride air duct manufacturing project
Article 2.2.1 This section applies to the manufacturing project of hard polyvinyl chloride air duct. Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. (I) Guarantee items
Article 2.2.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.2.3 The groove form and welding quality of the weld must comply with the construction specifications. The weld shall be free of defects such as cracks, browning, and fractures, and the longitudinal welds shall be staggered. Inspection method Observation and inspection.
(I) Basic items
Article 2.2.4 The appearance quality of the air duct shall comply with the following provisions: Qualified: The surface is basically flat, the arc is uniform, there is no obvious bump at the joint, the two ends of the engineering 10 design standard full text information system
W Engineering Construction Standard Full Text Information System
The surfaces are parallel, there is no obvious distortion and warping, and the weld is full. Excellent: The surface is flat, the bump is not greater than 5mm, the arc is uniform, there is no bump at the joint, the two ends of the surface are parallel, there is no distortion and warping, the weld is full, and the welding rods are arranged neatly. Inspection method Wire drawing, ruler measurement and observation inspection. Article 2.2.5 The reinforcement of the air duct shall comply with the following provisions: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat and beautiful, and the triangular support spacing at the connection between the duct and the flange is appropriate and uniform and symmetrical.
Inspection method: Observation and measurement.
(III) Allowable deviation items
Article 2.2.6 The allowable deviation and inspection method of the duct manufacturing dimensions shall comply with the provisions of Table 2.2.6.
Permissible deviation and inspection method for duct production Item
Outer diameter of circular duct
Large side of rectangular duct
≤630mm
@>630mm
<630mm
≥630mm
Permissible deviation
Inspection method
Measure the diameters at 90° with a ruler
Inspect with ruler
Section 3
Component production engineering
Article 2.3.1 This section applies to the production of various vents, dampers, covers, hoods and flexible short pipes.
Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. Fire dampers are inspected one by one.
Engineering Construction Standard Full Text Information System
W.bzsoso：cOnEngineering Construction Standard Full Text Information System
(1I) Guarantee Items
Article 2.3.2 The specifications and dimensions of various components must meet the design requirements. Inspection Methods Measurement and observation inspection.
Article 2.3.3 Fire dampers must be tightly closed. Rotating parts must be made of corrosion-resistant materials, and the material thickness of the shell and valve plate must not be less than 2mm. Inspection Methods Measurement, observation and operation inspection. Article 2.3.4 The assembly dimensions of various air valves must be correct, and there must be no friction between the blades and the shell.
Inspection Methods Operation inspection.
Article 2.3.5 The movable parts, fixed parts and pull rods of the clean system valves, if made of carbon steel, must be galvanized, and the gap between the shaft and the valve body must be closed.
Inspection Methods Observation inspection.
(I) Basic items
Article 2.3.6 The assembly of components shall meet the following requirements: Qualified: The connection is firm, and the movable parts are flexible and reliable. Excellent: The connection is tight and firm, the movable parts are flexible and reliable, and the tightness is moderate. Inspection method: Manual pull and observation inspection.
Article 2.3.7 The appearance quality of the air outlet shall meet the following requirements: Qualified: The spacing between the grid, hole, sheet, and diffusion ring is consistent, and the frame and blades are straight and neat. Excellent: On the basis of qualified, the appearance is smooth and beautiful. Inspection method: Observation and measurement inspection.
Article 2.3.8 The production of various types of air valves shall meet the following requirements: Qualified: There are opening and closing marks. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The direction of the valve plate and the handle is consistent, and the opening and closing direction is clear. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: Observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following provisions: Engineering 12 Standard Full Text Information System
W.bzsoso.coIbzsosO.coI Engineering Construction Standard Full Text Information System
Inspection method: Wire drawing, measurement and observation inspection. Article 2.1.9 The flange of the air duct shall meet the following requirements: Qualified: The hole spacing of the flange meets the design requirements and the provisions of the construction specifications, the welding is firm, and no screw holes are set at the weld.
Excellent: On the basis of qualification, the screw holes are interchangeable. Inspection method: Measure and observe.
Article 2.1.10 The reinforcement of the air duct shall meet the following requirements: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat, with appropriate spacing, uniform and symmetrical. Inspection method: Observation and hand-wrench inspection.
Article 2.1.11 The appearance of stainless steel plate, aluminum plate and composite steel plate air duct shall meet the following requirements:
Qualified: There are no obvious scratches on the surface of stainless steel plate and aluminum plate air ducts, and there is no damage on the surface of composite steel plate air ducts.
Excellent: Stainless steel plate and aluminum plate air duct surface without defects such as nicks, scratches, dents, etc., composite steel plate air duct surface without damage.
Inspection method Observation and inspection.
(III) Allowable deviation items
Article 2.1.12 The allowable deviation and inspection method of air duct and flange manufacturing dimensions shall comply with the provisions of Table 2.1.12.
Permissible deviation and inspection method of duct and flange manufacturing dimensions Item
Outer diameter of circular duct
e>300mm
e>300mm
Engineering Construction Standard Full-text Information System
Permissible deviation
Table 2.1.12
Inspection method
Measure the diameters at 90° with a ruler
WEngineering Construction Standard Full-text Information System
Large side of rectangular duct
Diameter of circular flange
Side length of rectangular flange
≤300mm
>300mm
Difference between two diagonals of rectangular flange
Flange flatness
Flannel weld flatness at the joint
Allowable deviation
Measurement inspection
Inspection method
Measure the diameters at 90° with a ruler
Measure the four sides with a ruler
Measurement inspection
Put the flange on the platform and check with a feeler gauge
Section 2
Hard polyvinyl chloride air duct manufacturing project
Article 2.2.1 This section applies to the manufacturing project of hard polyvinyl chloride air duct. Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. (I) Guarantee items
Article 2.2.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.2.3 The groove form and welding quality of the weld must comply with the construction specifications. The weld shall be free of defects such as cracks, browning, and fractures, and the longitudinal welds shall be staggered. Inspection method Observation and inspection.
(I) Basic items
Article 2.2.4 The appearance quality of the air duct shall comply with the following provisions: Qualified: The surface is basically flat, the arc is uniform, there is no obvious bump at the joint, the two ends of the engineering 10 design standard full text information system
W Engineering Construction Standard Full Text Information System
The surfaces are parallel, there is no obvious distortion and warping, and the weld is full. Excellent: The surface is flat, the bump is not greater than 5mm, the arc is uniform, there is no bump at the joint, the two ends of the surface are parallel, there is no distortion and warping, the weld is full, and the welding rods are arranged neatly. Inspection method Wire drawing, ruler measurement and observation inspection. Article 2.2.5 The reinforcement of the air duct shall comply with the following provisions: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat and beautiful, and the triangular support spacing at the connection between the duct and the flange is appropriate and uniform and symmetrical.
Inspection method: Observation and measurement.
(III) Allowable deviation items
Article 2.2.6 The allowable deviation and inspection method of the duct manufacturing dimensions shall comply with the provisions of Table 2.2.6.
Permissible deviation and inspection method for duct production Item
Outer diameter of circular duct
Large side of rectangular duct
≤630mm
@>630mm
<630mm
≥630mm
Permissible deviation
Inspection method
Measure the diameters at 90° with a ruler
Inspect with ruler
Section 3
Component production engineering
Article 2.3.1 This section applies to the production of various vents, dampers, covers, hoods and flexible short pipes.
Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. Fire dampers are inspected one by one.
Engineering Construction Standard Full Text Information System
W.bzsoso：cOnEngineering Construction Standard Full Text Information System
(1I) Guarantee Items
Article 2.3.2 The specifications and dimensions of various components must meet the design requirements. Inspection Methods Measurement and observation inspection.
Article 2.3.3 Fire dampers must be tightly closed. Rotating parts must be made of corrosion-resistant materials, and the material thickness of the shell and valve plate must not be less than 2mm. Inspection Methods Measurement, observation and operation inspection. Article 2.3.4 The assembly dimensions of various air valves must be correct, and there must be no friction between the blades and the shell.
Inspection Methods Operation inspection.
Article 2.3.5 The movable parts, fixed parts and pull rods of the clean system valves, if made of carbon steel, must be galvanized, and the gap between the shaft and the valve body must be closed.
Inspection Methods Observation inspection.
(I) Basic items
Article 2.3.6 The assembly of components shall meet the following requirements: Qualified: The connection is firm, and the movable parts are flexible and reliable. Excellent: The connection is tight and firm, the movable parts are flexible and reliable, and the tightness is moderate. Inspection method: Manual pull and observation inspection.
Article 2.3.7 The appearance quality of the air outlet shall meet the following requirements: Qualified: The spacing between the grid, hole, sheet, and diffusion ring is consistent, and the frame and blades are straight and neat. Excellent: On the basis of qualified, the appearance is smooth and beautiful. Inspection method: Observation and measurement inspection.
Article 2.3.8 The production of various types of air valves shall meet the following requirements: Qualified: There are opening and closing marks. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The direction of the valve plate and the handle is consistent, and the opening and closing direction is clear. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: Observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following provisions: Engineering 12 Standard Full Text Information System
W.bzsoso.coIbzsosO.coI Engineering Construction Standard Full Text Information System
Inspection method: Wire drawing, measurement and observation inspection. Article 2.1.9 The flange of the air duct shall meet the following requirements: Qualified: The hole spacing of the flange meets the design requirements and the provisions of the construction specifications, the welding is firm, and no screw holes are set at the weld.
Excellent: On the basis of qualification, the screw holes are interchangeable. Inspection method: Measure and observe.
Article 2.1.10 The reinforcement of the air duct shall meet the following requirements: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat, with appropriate spacing, uniform and symmetrical. Inspection method: Observation and hand-wrench inspection.
Article 2.1.11 The appearance of stainless steel plate, aluminum plate and composite steel plate air duct shall meet the following requirements:
Qualified: There are no obvious scratches on the surface of stainless steel plate and aluminum plate air ducts, and there is no damage on the surface of composite steel plate air ducts.
Excellent: Stainless steel plate and aluminum plate air duct surface without defects such as nicks, scratches, dents, etc., composite steel plate air duct surface without damage.
Inspection method Observation and inspection.
(III) Allowable deviation items
Article 2.1.12 The allowable deviation and inspection method of air duct and flange manufacturing dimensions shall comply with the provisions of Table 2.1.12.
Permissible deviation and inspection method of duct and flange manufacturing dimensions Item
Outer diameter of circular duct
e>300mm
e>300mm
Engineering Construction Standard Full-text Information System
Permissible deviation
Table 2.1.12
Inspection method
Measure the diameters at 90° with a ruler
WEngineering Construction Standard Full-text Information System
Large side of rectangular duct
Diameter of circular flange
Side length of rectangular flange
≤300mm
>300mm
Difference between two diagonals of rectangular flangebZxz.net
Flange flatness
Flannel weld flatness at the joint
Allowable deviation
Measurement inspection
Inspection method
Measure the diameters at 90° with a ruler
Measure the four sides with a ruler
Measurement inspection
Put the flange on the platform and check with a feeler gauge
Section 2
Hard polyvinyl chloride air duct manufacturing project
Article 2.2.1 This section applies to the manufacturing project of hard polyvinyl chloride air duct. Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. (I) Guarantee items
Article 2.2.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.2.3 The groove form and welding quality of the weld must comply with the construction specifications. The weld shall be free of defects such as cracks, browning, and fractures, and the longitudinal welds shall be staggered. Inspection method Observation and inspection.
(I) Basic items
Article 2.2.4 The appearance quality of the air duct shall comply with the following provisions: Qualified: The surface is basically flat, the arc is uniform, there is no obvious bump at the joint, the two ends of the engineering 10 design standard full text information system
W Engineering Construction Standard Full Text Information System
The surfaces are parallel, there is no obvious distortion and warping, and the weld is full. Excellent: The surface is flat, the bump is not greater than 5mm, the arc is uniform, there is no bump at the joint, the two ends of the surface are parallel, there is no distortion and warping, the weld is full, and the welding rods are arranged neatly. Inspection method Wire drawing, ruler measurement and observation inspection. Article 2.2.5 The reinforcement of the air duct shall comply with the following provisions: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat and beautiful, and the triangular support spacing at the connection between the duct and the flange is appropriate and uniform and symmetrical.
Inspection method: Observation and measurement.
(III) Allowable deviation items
Article 2.2.6 The allowable deviation and inspection method of the duct manufacturing dimensions shall comply with the provisions of Table 2.2.6.
Permissible deviation and inspection method for duct production Item
Outer diameter of circular duct
Large side of rectangular duct
≤630mm
@>630mm
<630mm
≥630mm
Permissible deviation
Inspection method
Measure the diameters at 90° with a ruler
Inspect with ruler
Section 3
Component production engineering
Article 2.3.1 This section applies to the production of various vents, dampers, covers, hoods and flexible short pipes.
Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. Fire dampers are inspected one by one.
Engineering Construction Standard Full Text Information System
W.bzsoso：cOnEngineering Construction Standard Full Text Information System
(1I) Guarantee Items
Article 2.3.2 The specifications and dimensions of various components must meet the design requirements. Inspection Methods Measurement and observation inspection.
Article 2.3.3 Fire dampers must be tightly closed. Rotating parts must be made of corrosion-resistant materials, and the material thickness of the shell and valve plate must not be less than 2mm. Inspection Methods Measurement, observation and operation inspection. Article 2.3.4 The assembly dimensions of various air valves must be correct, and there must be no friction between the blades and the shell.
Inspection Methods Operation inspection.
Article 2.3.5 The movable parts, fixed parts and pull rods of the clean system valves, if made of carbon steel, must be galvanized, and the gap between the shaft and the valve body must be closed.
Inspection Methods Observation inspection.
(I) Basic items
Article 2.3.6 The assembly of components shall meet the following requirements: Qualified: The connection is firm, and the movable parts are flexible and reliable. Excellent: The connection is tight and firm, the movable parts are flexible and reliable, and the tightness is moderate. Inspection method: Manual pull and observation inspection.
Article 2.3.7 The appearance quality of the air outlet shall meet the following requirements: Qualified: The spacing between the grid, hole, sheet, and diffusion ring is consistent, and the frame and blades are straight and neat. Excellent: On the basis of qualified, the appearance is smooth and beautiful. Inspection method: Observation and measurement inspection.
Article 2.3.8 The production of various types of air valves shall meet the following requirements: Qualified: There are opening and closing marks. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The direction of the valve plate and the handle is consistent, and the opening and closing direction is clear. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: Observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following provisions: Engineering 12 Standard Full Text Information System
W.bzsoso.coI12
Test method
Measure the diameters at 90° with a ruler
W Engineering Construction Standard Full-text Information System
Large side of rectangular duct
Diameter of circular flange
Side length of rectangular flange
≤300mm
>300mm
Difference between two diagonals of rectangular flange
Flange flatness
Butt joint of flange weld Flatness
Allowable deviation
Measurement inspection
Inspection method
Measure the diameters at 90° with a ruler
Measure the four sides with a ruler
Measurement inspection
Put the flange on the platform and inspect it with a feeler gauge
Section 2
Hard polyvinyl chloride air duct manufacturing project
Article 2.2.1 This section applies to the manufacturing project of hard polyvinyl chloride air duct. Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. (I) Guarantee items
Article 2.2.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.2.3 The groove form and welding quality of the weld must meet the construction specifications. The weld must be free of defects such as cracks, browning, and fractures, and the longitudinal welds must be staggered. Inspection method Observation inspection.
(I) Basic Items
Article 2.2.4 The appearance quality of the air duct shall meet the following requirements: Qualified: The surface is basically flat, the arc is uniform, there is no obvious bump at the joint, the two ends of the engineering standard full text information system
W Engineering Construction Standard Full Text Information System
The surfaces are parallel, there is no obvious distortion and warping, and the weld is full. Excellent: The surface is flat, the bump is not greater than 5mm, the arc is uniform, there is no bump at the joint, the two ends of the engineering standard full text information system
The weld is full, and the welding rods are arranged neatly. Inspection method: Wire drawing, measurement and observation inspection. Article 2.2.5 The reinforcement of the air duct shall meet the following requirements: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat and beautiful, and the triangular support spacing at the connection between the air duct and the flange is appropriate and uniform and symmetrical.
Inspection method: Observation and measurement inspection.
(III) Allowable Deviation Items
Article 2.2.6 The allowable deviation and inspection method of the size of the air duct shall comply with the provisions of Table 2.2.6.
Allowable Deviation and Inspection Method for Air Duct Manufacturing Item
Outer Diameter of Circular Feng Duct
Large Side of Rectangular Air Duct
≤630mm
@>630mm
<630mm
≥630mm
Allowable Deviation
Inspection Method
Measure the diameters at 90° with a ruler
Inspection by Ruler
Section III
Component Manufacturing Engineering
Article 2.3.1 This section applies to the manufacturing of various air vents, air valves, covers, hoods and flexible short pipes.
Inspection Quantity Randomly inspect 10% of the quantity, but not less than 5 pieces. Fire dampers shall be checked one by one.
Engineering Construction Standard Full Text Information System
W.bzsoso：cOnEngineering Construction Standard Full Text Information System
(1I) Guarantee Items
Article 2.3.2 The specifications and dimensions of various components must meet the design requirements. Inspection Methods Measurement and observation inspection.
Article 2.3.3 Fire dampers must be closed tightly. Rotating parts must be made of corrosion-resistant materials, and the material thickness of the shell and valve plate must not be less than 2mm. Inspection Methods Measurement, observation and operation inspection. Article 2.3.4 The assembly dimensions of various air valves must be correct, and there must be no friction between the blades and the shell.
Inspection Methods Operation inspection.
Article 2.3.5 The movable parts, fixed parts and pull rods of the clean system valves, if made of carbon steel, must be galvanized, and the gap between the shaft and the valve body must be closed.
Inspection Methods Observation inspection.
(I) Basic items
Article 2.3.6 The assembly of components shall meet the following requirements: Qualified: The connection is firm, and the movable parts are flexible and reliable. Excellent: The connection is tight and firm, the movable parts are flexible and reliable, and the tightness is moderate. Inspection method: Manual pull and observation inspection.
Article 2.3.7 The appearance quality of the air outlet shall meet the following requirements: Qualified: The spacing between the grid, hole, sheet, and diffusion ring is consistent, and the frame and blades are straight and neat. Excellent: On the basis of qualified, the appearance is smooth and beautiful. Inspection method: Observation and measurement inspection.
Article 2.3.8 The production of various types of air valves shall meet the following requirements: Qualified: There are opening and closing marks. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The direction of the valve plate and the handle is consistent, and the opening and closing direction is clear. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: Observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following provisions: Engineering 12 Standard Full Text Information System
W.bzsoso.coI12
Test method
Measure the diameters at 90° with a ruler
W Engineering Construction Standard Full-text Information System
Large side of rectangular duct
Diameter of circular flange
Side length of rectangular flange
≤300mm
>300mm
Difference between two diagonals of rectangular flange
Flange flatness
Butt joint of flange weld Flatness
Allowable deviation
Measurement inspection
Inspection method
Measure the diameters at 90° with a ruler
Measure the four sides with a ruler
Measurement inspection
Put the flange on the platform and inspect it with a feeler gauge
Section 2
Hard polyvinyl chloride air duct manufacturing project
Article 2.2.1 This section applies to the manufacturing project of hard polyvinyl chloride air duct. Inspection quantity Randomly check 10% of the quantity, but not less than 5 pieces. (I) Guarantee items
Article 2.2.2 The specifications and dimensions of the air duct must meet the design requirements. Inspection method Measurement and observation inspection.
Article 2.2.3 The groove form and welding quality of the weld must meet the construction specifications. The weld must be free of defects such as cracks, browning, and fractures, and the longitudinal welds must be staggered. Inspection method Observation inspection.
(I) Basic Items
Article 2.2.4 The appearance quality of the air duct shall meet the following requirements: Qualified: The surface is basically flat, the arc is uniform, there is no obvious bump at the joint, the two ends of the engineering standard full text information system
W Engineering Construction Standard Full Text Information System
The surfaces are parallel, there is no obvious distortion and warping, and the weld is full. Excellent: The surface is flat, the bump is not greater than 5mm, the arc is uniform, there is no bump at the joint, the two ends of the engineering standard full text information system
The weld is full, and the welding rods are arranged neatly. Inspection method: Wire drawing, measurement and observation inspection. Article 2.2.5 The reinforcement of the air duct shall meet the following requirements: Qualified: The reinforcement is firm and reliable.
Excellent: The reinforcement is firm and reliable, neat and beautiful, and the triangular support spacing at the connection between the air duct and the flange is appropriate and uniform and symmetrical.
Inspection method: Observation and measurement inspection.
(III) Allowable Deviation Items
Article 2.2.6 The allowable deviation and inspection method of the size of the air duct shall comply with the provisions of Table 2.2.6.
Allowable Deviation and Inspection Method for Air Duct Manufacturing Item
Outer Diameter of Circular Feng Duct
Large Side of Rectangular Air Duct
≤630mm
@>630mm
<630mm
≥630mm
Allowable Deviation
Inspection Method
Measure the diameters at 90° with a ruler
Inspection by Ruler
Section III
Component Manufacturing Engineering
Article 2.3.1 This section applies to the manufacturing of various air vents, air valves, covers, hoods and flexible short pipes.
Inspection Quantity Randomly inspect 10% of the quantity, but not less than 5 pieces. Fire dampers shall be checked one by one.
Engineering Construction Standard Full Text Information System
W.bzsoso：cOnEngineering Construction Standard Full Text Information System
(1I) Guarantee Items
Article 2.3.2 The specifications and dimensions of various components must meet the design requirements. Inspection Methods Measurement and observation inspection.
Article 2.3.3 Fire dampers must be closed tightly. Rotating parts must be made of corrosion-resistant materials, and the material thickness of the shell and valve plate must not be less than 2mm. Inspection Methods Measurement, observation and operation inspection. Article 2.3.4 The assembly dimensions of various air valves must be correct, and there must be no friction between the blades and the shell.
Inspection Methods Operation inspection.
Article 2.3.5 The movable parts, fixed parts and pull rods of the clean system valves, if made of carbon steel, must be galvanized, and the gap between the shaft and the valve body must be closed.
Inspection Methods Observation inspection.
(I) Basic items
Article 2.3.6 The assembly of components shall meet the following requirements: Qualified: The connection is firm, and the movable parts are flexible and reliable. Excellent: The connection is tight and firm, the movable parts are flexible and reliable, and the tightness is moderate. Inspection method: Manual pull and observation inspection.
Article 2.3.7 The appearance quality of the air outlet shall meet the following requirements: Qualified: The spacing between the grid, hole, sheet, and diffusion ring is consistent, and the frame and blades are straight and neat. Excellent: On the basis of qualified, the appearance is smooth and beautiful. Inspection method: Observation and measurement inspection.
Article 2.3.8 The production of various types of air valves shall meet the following requirements: Qualified: There are opening and closing marks. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The direction of the valve plate and the handle is consistent, and the opening and closing direction is clear. The blades of the multi-leaf valve fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: Observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following provisions: Engineering 12 Standard Full Text Information System
W.bzsoso.coIArticle 8 The production of various types of air valves shall comply with the following regulations: Qualified: There are opening and closing marks. The blades of multi-leaf valves fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The valve plate and the handle are in the same direction, and the opening and closing direction is clear. The blades of multi-leaf valves fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following regulations: Engineering 12 Standard Full Text Information System
W.bzsoso.coIArticle 8 The production of various types of air valves shall comply with the following regulations: Qualified: There are opening and closing marks. The blades of multi-leaf valves fit and overlap consistently, and the wheelbase deviation is not more than 2mm.
Excellent: The valve plate and the handle are in the same direction, and the opening and closing direction is clear. The blades of multi-leaf valves fit and overlap consistently, and the wheelbase deviation is not more than 1mm. Inspection method: observation and measurement inspection.
Article 2.3.9 The production of covers shall comply with the following regulations: Engineering 12 Standard Full Text Information System
W.bzsoso.coI
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.