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Engineering Construction Standard Full-text Information System
UDC 691.714. 028
.001.4
National Standard of the People's Republic of China
GB5827.2—86
Inspection regulation for hollow shaped steel window
Published on January 31, 1986
Implemented on November 1, 1986
Published by the State Bureau of Technical Supervision
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Inspection regulation for hollow shaped steel window
Inspecting regulation for hollow shaped steel window
This standard applies to the inspection and acceptance of ordinary hollow steel window frames and sashes. 1. General provisions
UDC 691.714. 028
.001.4
GB 5827.2—86
1.1 Hollow steel window profiles are made of 1.2mm and 1.5mm thick steel strips as specified in GB716—83 "Universal carbon steel cold-rolled steel strips".
1.2 Hot-rolled window materials used for hollow steel windows shall comply with GB1.3 Terminology Explanation, see Appendix A.
2 Technical requirements
2.1 Dimensions of steel window frames
2.1.1 Allowable deviations of width and height (see Table 1). Width (B) and height (A)
Allowable deviations
Allowable length difference between two diagonals (see Table 2). 2.1.2
Measured length of diagonal line (L)
Allowable length difference
2.2 Frame and sash matching
2.2.1 Frame and sash overlap 6 (see Figure 1, Table 3). The National Bureau of Standards issued the provisions of 2597-81 "Hot-rolled window frame steel" on January 31, 1986. Table 1
≤1500
Grade 3
《2000
Grade 2
Grade 1
Grade 3
Grade 1
Grade 3
Implementation of 1986-11-01
Engineering Construction Standard Full Text Information System
Frame-sash overlap
Frame-sash fit clearance C1 on hinge surface and fit clearance C2 on other surfaces (see Figure 2, Table 4). 2.2.2
Fit clearance
2.2.3 The window sash should be flexible to open and close, and should not have defects such as obstruction, inverted warping, and rebound. Grade 2
2.2.4 The position of the installation holes for the hardware parts of steel windows should be accurate so that the hardware parts can be installed flat and firmly to meet the use requirements. 2.2.5 Steel windows should be equipped with water-shedding plates.
2.3 Connection and appearance
2.3.1 Each welding point should be firm, and there should be no defects such as false welding and fracture. Each bolt connection should be firm, and there should be no looseness. 2.3.2 The difference in the size of the window core grid should be less than or equal to 3mm; the difference in the size of the window frame grid should be less than or equal to 2mm. The offset of the position of two adjacent window cores should be less than or equal to 3mm. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
2.3.3 The surface of the steel window should be flat, and there should be no appearance defects such as burrs, welding slag and obvious hammer marks. 2.3.4 Before dipping or applying anti-rust paint, the steel window should be degreased and derusted; the paint layer should be evenly thick, and there should be no obvious defects such as paint accumulation and paint leakage. 3 Inspection rules
3.1 Before leaving the factory, the steel window should be sampled and inspected according to the contract number. When the batch is less than or equal to 300, 3% shall be sampled, but the total sampled quantity shall not be less than 5; when the batch is greater than 300, 2% shall be sampled, but the total sampled quantity shall not be less than 10. 3.2 Among the steel windows sampled for the first time, if the first-grade product rate is lower than 90%, the sampled product shall be doubled. If the first-grade product rate still does not reach 90%, the batch of products shall be inspected as second-grade products. If the second-grade product rate still does not reach 90%, the batch of products shall be returned for repair. If the second-grade product rate of the steel windows sampled for the first time does not reach 80%, the batch of products shall be returned for repair. 3.3 Principles for the evaluation of first and second-grade products: key items must meet the requirements; main items meet their respective requirements; among general items, at least 7 items of first-grade products must meet the requirements, and at least 5 items of second-grade products must meet the requirements (see Appendix B). 4 Marking and storage
4.1 Before steel windows leave the factory, a product factory certificate shall be issued; each orange steel window shall have a "qualified" mark. 4.2 Steel windows should be wrapped firmly to facilitate lifting; it is strictly forbidden to stack heavy objects on windows. 4.3 When stacking steel windows, pads should be used to level them, and the vertical angle should not be less than 70 degrees, and avoid contact with corrosive media. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
A.1 Blockage
Appendix A
Explanation of Steel Window Terms
(Supplement)
When the window sash is opened and closed normally, due to the fact that the axis lines of the two hinges are not straight, or the axis core is bent, the hinges (hinges) leaf pieces bite each other and encounter abnormal obstacles, causing the window sash to rotate inflexibly or have an intermittent stagnation state. Rebound
When the window sash is closed, due to insufficient window edge clearance or hinge (hinge) misalignment and other reasons, the window sash has a phenomenon of self-rebound after closing. A.3 Warping
When the window sash is closed, the upper end of the window sash should be close to the window frame before the lower end. If the lower end of the window sash is close to the window frame, but the upper end of the window sash cannot be close to the window frame due to warping, and there is still a gap, it is called warping. A.4 False welding
The following situations are called false welding:
A.4.1 During arc welding, the weld position deviates from the center of the parent material joint, and the arc only has enough penetration depth for one side of the parent material. The joint is not actually welded but covered by weld meat or slag. A.4.2 During arc welding, the welding current is too small, the arc has no penetrating power, and only a strip of weld meat is piled up on the surface of the parent material. A.4.3 During flash resistance welding, the steel slag cannot be discharged, and the slag is sandwiched between the welds during top forging. A, 4.4 During flash resistance welding, the melting time is too short, the temperature is not enough, and the top forging is not firm. A.4.5 During flash resistance welding, excessive melting occurs and insufficient forging allowance results in forging without forging. 5 Paint piling
The following situations belong to paint piling:
A.5.1 There is obvious and more sagging on the surface of the paint film, resulting in an uneven surface. A.5.2 Paint liquid accumulates and condenses on the surface of the paint film, resulting in an uneven surface. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Project Classification
Engineering Construction Standard Full-text Information System
Serial number in this standard
Appendix B
Inspection items, measuring tools and methods for hollow steel windows (supplements)
The welds and rivets at the four corners of the frame and sash, hinges and braces
The joints should be firm and free of defects such as false welding, breakage and looseness (excluding window cores)
Degreasing and rust removal|| tt||Difference in length of two diagonals
Overlap of frame and sash 5
Closing clearance C1
Other frame and sash clearance C2
Height dimension deviation
Width dimension deviation
Opening and closing of window sash
Accurate position of parts holes
Drip board
Bolt connections should be firm and not loose
Window core should not be loose
Detection measuring tools and methods
Special detection tools or X-ray inspection||tt ||Steel tape measure or special measuring tool
Measurement position: inner angle
Depth gauge, caliperwww.bzxz.net
1.5×50,2×50 plug
Measurement position: hinge page
1.5×50,1×50 plug
Measurement position: large surface of frame
Steel tape measure
Measurement position: 50~100 from the end
Steel tape measure
Measurement position: 50~100 from the end
Visual inspection, manual test
Test assembly with hardware parts
Visual inspection, manual test
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Project classification
Additional instructions:
Serial number in this standard
Difference in size of window core grid ≤3
Difference in size of window frame grid ≤3
Offset of adjacent window cores <3
Difference in height of frame, support and frame leaf intersection ≤0.7
No burrs, welding slag and obvious hammer marks on the surface
(Depth of hammer marks <0.5)
The paint surface is uniform, and there should be no paint accumulation.
Testing tools
Steel ruler, steel tape measure
And methods
Measurement location: Window core web
Steel ruler, steel tape measure
Measurement location: Large surface of window frame
Steel ruler, steel tape measure
Measurement location: Window core flange
Depth gauge, steel ruler, plug
Measurement location: Large surface of window frame, small surface of window sash Depth caliper
Visual inspection of positive surface
This standard was proposed by the Ministry of Urban and Rural Construction and Environmental Protection of the People's Republic of China and is under the jurisdiction of the China Building Standard Design Institute of the China Building Technology Development Center.
This standard was drafted by the Machinery Management Bureau of the Ministry of Urban and Rural Construction and Environmental Protection, the Liaoning Provincial Standardization Office, the Hubei Provincial Building Standardization Research Institute, and the Beijing Steel Window Factory.
The main drafters of this standard are Zheng Jinfeng and Di Weiye. Engineering Construction Standards Full-text Information System
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