This standard specifies the technical requirements and inspection rules for ordinary flat-hinged solid steel door frames and leaves (hereinafter referred to as steel doors). This standard applies to the inspection and acceptance of steel doors. GB 9156-1988 Inspection rules for solid steel doors GB9156-1988 Standard download decompression password: www.bzxz.net

1. Subject content and scope of application
National Standard of the People's Republic of China
Solid steel door
Solia shaped steel door
UDC691.714.028
GB9156—88
This standard specifies the technical requirements and inspection rules for ordinary flat-hung solid steel door frame leaves (hereinafter referred to as steel doors). This standard applies to the inspection and acceptance of steel doors. 2. Reference standards
Inspection rules for solid steel windows
Terms for building doors and windows
Dimension series of building door and window openings
3. Technical requirementsbzxZ.net
3.1 Basic requirements
Basic dimension series of flat-hung steel doors (32, 40mm solid material) Hot-rolled window frame steel
Varieties of rolled thin steel plates
3.1.1 The profiles of steel doors shall comply with the provisions of GB2597. 3.1.2 The basic dimension series of steel doors shall comply with the provisions of GB.
3.2 Overall dimensions
3.2.1 The allowable deviation of the height and width of the door frame (see Table 1) Table 1
The allowable length difference between the two diagonal lines of the door frame (see Table 2) Allowable length consultation
City Construction Environmental Protection Department 198804-29 Approved
1988-11-01 Implementation
3.2.3 The difference in the grid size of the door frame shall not exceed 2mm. 3.2.4 The difference in the grid size of the door leaf shall not exceed 3mm. GB9156-88
3.2.5 The offset of the positions of two adjacent door cores shall not exceed 3mm. 3.2.6 The diagonal hanging height of the door leaf is 3~5mm.
3.3 Frame leaf matching
3.3.1 Frame leaf overlap (see Figure 1, Table 3) Figure 1
Frame leaf overlap plate 6 at the door lock,
Frame leaf overlap plate b on other surfaces,
2 Frame leaf matching clearance (see Figure 1, Table 4)
Frame leaf matching clearance c on the hinge page,
Frame leaf matching clearance c2 on other surfaces
3.3.3 The door leaf should be flexible to open and close, and should not have defects such as blocking, rebound and inverted warping. 3.4 Connection and appearance
3.4.1 All connections of steel doors (welding, riveting, bolt connection) should be firm, and no defects such as false welding, breakage, looseness, etc. are allowed. 3.4.2 The position of the installation holes of the hardware parts of the steel door should be accurate to ensure that the hardware parts are installed flat and firmly to meet the use requirements. 3.4.3 The surface of the steel door frame leaf should be flat, and there should be no appearance defects such as burrs, welding slag, welding wire and obvious hammer marks. 3.4.4 The door core plate structure should meet the architectural design requirements. The bending value f of the door core plate surface is not greater than 3mm (see Figure 2). Figure 2
GB9156-88
3.4.5 Before applying anti-rust paint, the steel door should be degreased and derusted. The paint layer should be uniform and firm, and there should be no obvious defects such as paint accumulation and paint leakage. 4. Inspection rules
4.1 Before leaving the factory, the steel door must be inspected by the inspection department of the manufacturer and a certificate of conformity must be issued. 4.2 Steel doors are sampled and inspected by batch. When the batch is not more than 300 pieces, 3% of them are sampled and the total sampled quantity is not less than 5 pieces. When the batch is more than 300 pieces, 2% of them are sampled and the total sampled quantity is not less than 10 pieces. 4.3 Among the sampled steel doors, if the first-grade rate is less than 90%, the batch of products shall be accepted as second-grade products. If the second-grade rate is less than 90%, the batch of products shall be doubled for sampling. If the second-grade rate is still less than 90%, all of them shall be repaired. If the second-grade rate is less than 80% in the first sampled steel doors, all of them shall be repaired.
4.4 Principles for evaluation of first and second-grade products: key items must meet the requirements; main items meet their respective requirements; general items, first-grade products must have more than 7 items (including 7 items) meet the requirements, and second-grade products must have more than 5 items (including 5 items) 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 Solid Steel Doors". 5. Marking, packaging, transportation, storage
5.1 Each steel door should have a "qualified" mark.
5.2 The steel door should be packed firmly to prevent deformation and facilitate transportation. 5.3 The steel door should be loaded and unloaded with care to avoid collision and entanglement. It should be transported in a vertical state to prevent extrusion and deformation. 5.4 When storing the steel door, it must be leveled with pads and the vertical angle should not be less than 70° to avoid contact with corrosive media. Sequence
Project classification
Key projects
Main projects
General projects
Additional notes:
In this standard
9156-88
Appendix A
Quality inspection items, measuring tools and methods for solid steel doors (supplements)
The welded and riveted joints of the four corners of the frame and leaf, hinges and braces should be firm, and "no defects such as false welding, breakage and looseness are allowed" Degreasing and rust removal
The difference in length between the two diagonals is 4L
The overlap of the frame and leaf at the door lock is 6,
The overlap of the frame and leaf on other surfaces is 6,||tt ||Frame leaf matching clearance c1 of hinge page
Frame matching clearance c2 of other surfaces
Dimensional deviation of width
Flexible opening and closing of door leaf
Accurate position of parts installation holes
Each screw connection should be firm and not loose
Door core should not be loose
Difference in door grid size ≤3
Difference in door frame grid size ≤2
Offset of adjacent door cores ≤3
Diagonal hanging height of door leaf 3~5
No burrs, welding slag and obvious hammer marks on the surface
(depth ≤0.5)
The paint surface is evenly curved, and there should be no obvious paint accumulation or paint leakage. The curvature value of the door core board is f≤3
This standard is under the jurisdiction of the Building Standard Design Institute of China Building Technology Development Center. This standard was drafted by Beijing Steel Window Factory. 8
Testing tools and methods
Special testing instruments
Steel tape measure or special measuring tools
Measuring position: inner corner
Depth gauge, caliper
Depth gauge, caliper
1.5×50, 2×50 plugs
Measuring disk position: hinge page
1.5×50, 1×50 plugs
Measurement position: large surface of door frame
Steel tape measure
Measurement plate position:
50-100 from the end
Steel tape measure
Measurement position: 50-100 from the end
Visual inspection, manual test
Trial assembly with hardware parts
Steel ruler, steel tape measure
Measurement position: door core web
Steel ruler, steel tape measure
Measurement position: large surface of door frame
Steel ruler
Steel ruler, depth gauge
Visual inspection, depth gauge
Visual inspection, Na ruler, Han ruler
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