GB 8486-1987 Inspection rules for hollow steel screen doors and windows GB8486-87 GB8486-1987 standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB8486-87
Inspection rules for hollow section steel screen doors and windows
Inspection rules for hollow section steel screen doors and windows Construction standard
1987-12-18 Issued
Implementation on 1988-07-01
Issued by the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China
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National Standard of the People's Republic of China
Inspection rules for hollow section steel screen doors and windows
Inspection rules for hollow section steel screen doors and windows Subject content and scope of application
UDC 691.714.028
GB8486-87
This standard specifies the technical requirements and inspection rules for hollow section steel screen doors and windows (hereinafter referred to as screen doors and windows) used in conjunction with ordinary steel doors and windows.
This standard applies to the inspection and acceptance of screen doors and windows. Cited standards
GB5827.2 Inspection rules for hollow steel windows
GB5823 Terminology of building doors and windows
GB5826.1 Basic size series of casement steel doors (32.40 mm solid material) Basic size series of casement steel windows (25 mm solid material) GB5826.2
GB5826.3 Basic size series of casement steel windows (32 mm solid material) Hollow steel doors
GB9155
Ordinary carbon structural steel cold-rolled steel strip
3 Technical requirements
Varieties of rolled thin steel plates
Dimensions, shapes, weights and allowable deviations of hot-rolled flat steel 3.1 Basic requirements
3.1.1 Screen door and window profiles should be made of 1 mm and 1.2 mm thick steel strips and comply with the provisions of GB716. 3.1.2 The steel materials used for screen doors and windows shall comply with the provisions of GB708 and GB704. The materials used for other materials shall comply with the relevant national standards.
3.1.3 Screen doors and windows shall be manufactured according to the drawings and technical documents approved by the prescribed procedures and shall comply with the provisions of this standard. 3.2 Overall dimensions of screen doors and windows
3.2.1 Allowable deviation of height and width (see Table 1) Table 1
Allowable deviation
≤1500
First grade
Second grade
2 Allowable length difference between two diagonals (see Table 2) degree
Second grade
Approved by the Ministry of Urban and Rural Construction and Environmental Protection of the People’s Republic of China on December 18, 1987《600
Second grade
Second grade
Implementation on July 1, 1988
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3.2.3 The difference in the grid dimensions of screen doors and windows shall not exceed 3mm. Item
Allowable length difference>L,mm
3.3 Connection and coordination
First-class
Second-class
First-class
3.3.1 The connections (welding and bolting) of screen doors and windows should be firm, and no defects such as false welding, breakage and looseness are allowed. Window
Second-class
The installation holes of the hardware parts of screen doors and windows should be accurate to ensure that the hardware parts are firmly installed, the window screens are pressed tightly and flatly, and meet the use requirements.
The straightness of screen doors and window sashes should not exceed 1mm within a length of 1m, and the long side should be arched on the outside to meet the needs of installing the screen. The flatness of the overlapped surface of screen doors, windows and steel doors and windows is within a length of 1m. The flatness of the screen door sash is not more than 2mm, and the flatness of the screen window sash is not more than 1.5mm.
3.3.5 The height difference of the plane at the intersection of screen doors and windows should be less than 0.5mm. 3.4 Appearance requirements
3.4.1 The surface of screen doors and windows should be smooth and flat, and there should be no appearance defects such as burrs, welding slag, welding wire and obvious hammer marks. 3.4.2 Screen doors and windows should be degreased and derusted before being dipped in anti-rust paint. The paint layer should be uniform and firm, and there should be no obvious defects such as paint leakage and paint accumulation. 4 Inspection rules
4.1 Screen doors and windows must be inspected by the inspection department of the manufacturer before leaving the factory, and can only leave the factory after the issuance of a certificate of conformity. 4.2 Screen doors and windows are sampled and inspected according to the contract. When the batch is less than or equal to 300 panels, 3% of them are sampled and the total number of samples is not less than 5 panels; when the batch is greater than 300 panels, 2% of them are sampled and the total number of samples is not less than 10 panels. 4.3 Among the screen doors and windows sampled, if the first-grade rate is lower than 90%, the batch of products shall be accepted as second-grade products. If the second-grade rate is lower than 90%, the batch of products shall be doubled for sampling. If the second-grade rate is still lower than 90%, the batch of products shall be returned for repair. Among the screen doors and windows sampled for the first time, if the second-grade rate is lower than 80%, the batch of products shall be returned for repair. 4.4 Principles for evaluation of first and second-grade products: key items must meet the requirements; main items meet their respective requirements; among general items, first-grade products must have more than 5 (including 5) items that meet the requirements, and second-grade products must have more than 3 (including 3) items that meet the requirements. 4.5 Inspection methods and measuring tools shall be in accordance with the provisions of Appendix A "Quality Inspection Items, Measuring Tools and Methods for Hollow Steel Screen Doors and Windows" (Supplement). 5 Marking, packaging, transportation, purchase and storage
5.1 Each screen door and window (or each piece) shall have a qualified mark before leaving the factory. 5.2 According to user requirements, the pressed yarn strips should be fixed on the screen doors and windows or packaged separately before leaving the factory. 5.3 The screen doors and windows should be packed firmly and easy to load and unload. They should be transported in a vertical state. They should be lifted and placed gently during loading and unloading to prevent collision. It is strictly forbidden to place heavy objects on the screen doors and windows to prevent deformation.
5.4 When stacking screen doors and windows, they must be leveled with pads, with a vertical angle of not less than 70 and a horizontal height of not more than 1.5m to avoid contact with corrosive media.
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Project Classification
Key Project
Main Project
General Project
Additional Notes:wwW.bzxz.Net
In this Standard
Appendix A
Quality Inspection Items, Measuring Tools and Methods for Hollow Steel Screen Doors and Windows (Supplementary Parts)
The four corners of the frame and sash and all joints (welding, bolt connection) should be firm, and no defects such as false welding, breakage, looseness, etc. are allowed
Degreasing and Rust Removal
Height Dimension Deviation
Width dimension deviation
Difference in length between two diagonals L
Accurate position of hardware installation holes
Straightness
Flatness
Difference in plane height at the intersection
Screen door and window grid size ≤3mm
No burrs, welding slag and obvious hammer marks (depth ≤0.5mm) on the surface. The paint surface should be uniform, without obvious paint accumulation or paint leakage. Parts should be firmly installed without looseness, and the yarn should be tightly pressed. This standard is under the jurisdiction of China Building Standard Design Institute. This standard was drafted by Hebei Provincial Construction Committee, Hebei Weixian Screen Window Factory. mm
Testing tools and methods
Special testing instrument inspection
Steel tape measure
Measuring position: 50~100 from the end
Steel tape measure
Measuring position: 50100 from the end
Steel tape measure or special measuring tool
Measuring position: inner angle
Testing with hardware parts
Face gauge, steel plate ruler, platform
Face gauge, steel plate ruler, platform
Depth gauge, feeler gauge, platform
Steel ruler, steel tape measure
Visual inspection, depth gauge
Hand test, test installation
W.
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