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GB 24910-2010: Steel plate punched coupler
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Steel plate punched coupler
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GB 24910-2010
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Basic data | Standard ID | GB 24910-2010 (GB24910-2010) | | Description (Translated English) | Steel plate punched coupler | | Sector / Industry | National Standard | | Classification of Chinese Standard | P97 | | Classification of International Standard | 91.220 | | Word Count Estimation | 10,194 | | Date of Issue | 2010-08-09 | | Date of Implementation | 2011-06-01 | | Quoted Standard | GB/T 109; GB/T 196; GB/T 699; GB/T 700; GB/T 2828.1; GB/T 3091; GB 15831 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 3, 2010 (No. 158 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard applies to construction projects nominal pipe diameter of 48. 3 mm and 2. 4 mm and other dimensions of steel scaffolding, derricks, template support such as the use of fasteners. Also applies to municipal, water, chemicals, metallurgy, coal and shipbuilding and other projects using steel stamping fasteners. | GB 24910-2010: Steel plate punched coupler---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Steel plate punched coupler
ICS 91.220
P97
National Standards of People's Republic of China
Steel stamping fasteners
Issued on. 2010-08-09
2011-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
5.1,5.2,5.3,5.5,5.8,5.9 technical content of this standard is mandatory, the remaining provisions are recommended.
The standard reference to the Japanese standard JISA8951-1995 "steel scaffold."
Appendix A of this standard is an informative annex.
The standard proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China.
This standard is under the jurisdiction of the Ministry of Housing and Urban Construction Engineering standard technical focal point.
This standard is drafted by. China Academy of Building Research.
Participated in the drafting of this standard. Jiangyan blue sky Metal Factory, State Construction Engineering Quality Supervision and Inspection Center, China Construction Metal knot
Construction fastener configuration Association Committee, Urumqi City shaped silver Trade Co., Ltd., Langfang Kaibo Construction Machinery Co., Ltd. and the like.
The main drafters of this standard. Wang Feng, Wang Yi-Zhang Lian into the lake, Sun Yi Ling, Guo Yu increase, Yuanxin Guo, Wei East.
Steel stamping fasteners
1 Scope
This standard specifies the pressed steel fasteners (hereinafter referred to as fasteners) terms, definitions and symbols, classification, requirements, test methods, inspection rules,
Signs, packaging, transport and storage.
This standard applies to the construction of the steel pipe nominal outside diameter of 48.3mm and 42.4mm and other size steel scaffolding, derrick,
Template support such as the use of fasteners. Also used in municipal, water, chemicals, metallurgy, coal and shipbuilding and other projects using steel stamping fasteners.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 109 flat head rivet
GB/T 196 common thread basic size
GB/T 699 high-quality carbon structural steel
GB/T 700 carbon structural steel
GB/T 2828.1 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch inspection sampling plan
GB/T 3091 low pressure liquid delivery welded steel pipe
GB 15831 pipe scaffold fastener
3 Terms, definitions and symbols
3.1 Terms and Definitions
The following terms and definitions apply to this standard.
3.1.1
Use of steel stamping fasteners.
3.1.2
Right angle fastener rightanglecoupler
Connect two vertically intersecting steel fasteners.
3.1.3
Rotating fastener swivelcoupler
Two were connected at any angle cross steel fasteners.
3.1.4
Docking fastener sleevecoupler
Butt pipe connecting two fasteners.
3.1.5
Pedestal base-plate
Scaffolding uprights to withstand loads stampings.
3.2 Symbol
P. Test load;
Δ. displacement tensile test;
Δ1. horizontal displacement of the tube.
Category 4
4.1 Main parameters
Fastener main parameters of pipe diameter, unit mm.
4.2 type fastener
By structure type fastener rectangular fastener, rotating fastener, docking fastener and the base, fastening pattern shown in Figure 1.
a) rectangular fastener b) Rotate the fastener
c) docking fastener d) base
1 a schematic diagram type fasteners
4.3 Code
Fastener Code. CYK --- steel stamping fasteners.
Type code. Z --- rectangular, U --- rotary, D --- butt, DZ --- base.
Update code variants. either uppercase phonetic alphabet.
4.4 Fastener Model
Fastener type fastener by the code, type code, the main parameters, variations update code and the implementation of the standard number. Model as follows.
Fastener Code. CYK
Type code. Z --- right angle; U --- rotation; D --- butt; DZ --- base
Main parameters. scaffolding pipe diameter, unit. mm
Update code variants. phonetic alphabet is represented by uppercase
4.5 tag example
Example 1. scaffolding pipe diameter of 48.3mm, the first variant of the updated right angle fastener.
Example 2. scaffolding pipe diameter of 48.3mm, a second variant of the updated base.
5 Requirements
5.1 fasteners should be required procedures approved by the drawings for production.
Mechanical properties of fasteners 5.2 uses material should not be below the relevant provisions of GB/T 699 in 15Mn or GB/T 700 in the same material; spiro
Bolts, nuts, rivets, using the mechanical properties of the material should not be lower than in line with GB/T 700 in Q235 the relevant provisions.
Various parts of the fasteners 5.3 There shall be no cracks.
5.4 bolts should be riveting fasteners, bolts should be sealed after assembly.
5.5 fastener surface should be galvanized.
5.6 zinc coating thickness is preferably 0.05mm ~ 0.08mm.
5.7 bolt and nut threads shall comply with the provisions of GB/T 196's.
5.8 Rivets should comply with GB/T 109, the place should be firmly riveted.
5.9 fasteners anti-slip deformation, resistance to damage, tensile and compressive properties should meet the requirements of Table 1.
Table 1 fastener performance indicators
Properties name type fastener performance requirements
Anti-slip deformation
Right Angle P = 10.0kN time, Δ1≤7.00mm
When the rotation P = 7.0kN, Δ1≤7.00mm
Anti-sabotage
Right Angle P = 15.0kN, the various parts should not undermine
P = rotation when 10.0kN, all parts should not undermine
Tensile butt when P = 3.0kN, Δ≤2.00mm
P = 50.0kN compression base, the various parts should not undermine
Note. P corresponding test load applied to the fastener.
5.10 appearance quality requirements
5.10.1 open the cover and the seat of the distance should be greater than the pipe diameter 10mm.
5.10.2 moving parts should be flexible rotation, rotating fastener two rotating surface gap should be less than 1mm.
5.10.3 product models, trademarks, production should reign punched out in eye-catching, writing, pattern should be clear and complete.
6 Test methods
6.1 Test conditions and methods
6.1.1 The test should be used GB/T 3091 in nominal outer diameter of 48.3mm or 42.4mm, 3.5mm wall thickness of the pipe, the outer surface
Rust coating should be uniform and should be tested after the paint dried. Each one trial, fasteners should move a fastened position.
6.1.2 Accuracy test used for materials testing machines and dial indicator should not be less than ± 1%, anyone torque wrench accuracy not less than ± 5%.
Vernier caliper precision not less than 0.02mm. Test equipment should be used within legal units of measurement certified by the expiration date.
6.1.3 test fastening bolts and nuts should be used without qualified products.
6.1.4 Test, the opening should be at right angles to the horizontal tube fasteners, fastener rotation between the seat and cover on.
6.1.5 Test fasteners, fastening bolt torque should 35N · m.
6.1.6 When the fastener load test performed, loading speed should be controlled at 300N/s ~ 400N/s.
6.1.7 The total load tests should include preload.
6.2 right angle fastener performance test
6.2.1 Anti-slip deformation performance test
Anti-slip deformation performance test should be applied to the horizontal when the tube (fasteners on both sides) constant increase in vertical load P reaches a predetermined value, the measurement
Displacement Δ1, shown in Figure 2.
Millimeters
a) b)
1 --- horizontal tube;
2 --- standpipe;
3 --- fastener.
Figure 2 fasteners anti-slip deformation performance test schematic
When the preload P reaches 1.0kN, displacement measuring instrument shall be adjusted to zero. When P reaches 10.0kN, measuring the displacement value
Δ1. Test results should be recorded in Appendix A, Table A.1.
Two circular surface fastener shall be tested.
6.2.2 anti-sabotage performance test
After the anti-slip deformation performance test, performance test shall be carried out anti-sabotage. Test may be carried out only on the surface of a circular arc, before the test, shall be deducted
The lower portion of the support member is provided slip (Figure 3). When P reaches 15.0kN, fasteners should not undermine each part.
Millimeters
1 --- steel;
2 --- standpipe;
3 --- slip support;
4 --- fastener.
Figure 3 a schematic view of the fastener anti-sabotage performance test
6.3 rotating fastener performance test
6.3.1 Anti-slip deformation performance test
Anti-slip deformation performance test may be carried out only on the surface of a circular arc. Test methods should be consistent with the provisions of 6.2.1, when the preload of P
When 0.2kN, displacement measuring instrument shall be adjusted to zero. When P reaches 7.0kN, measuring the displacement value Δ1. Test results should be recorded in the attached
Appendix A Table A.2.
6.3.2 anti-sabotage performance test
After the anti-slip deformation performance test, performance test shall be carried out anti-sabotage. When P reaches 10.0kN, fasteners should not undermine each part.
6.4 docking fastener tensile performance test
Tensile performance test shall be by way of constant load. When the preload P reaches 1.0kN, measuring instruments adjusted to 0.00; P up
When 3.0kN, measured displacement value Δ. Test results should be recorded in Appendix A, Table A.3, Figure 4.
1 --- steel;
2 --- fasteners;
3 --- measuring tool.
4 a schematic diagram of fastener tensile performance test
6.5 base compression performance test
The test shall be at a rate of 1.0kN/s uniform loading, when P reaches 50.0kN, should not undermine the base of each part, see Figure 5.
1 --- steel;
2 --- base.
5 a schematic diagram of the base compression performance test
7 Inspection rules
7.1 Inspection classification
Fastener inspection into the factory inspection and type testing.
7.2 factory inspection
7.2.1 factory inspection by the manufacturer factory quality inspection department inspection requirements by inspection, factory inspection and issuance of certificate
Behind the prospective factory.
7.2.2 factory inspection items shall conform to Table 2.
7.3 Type inspection
7.3.1 Where the following circumstances, type of inspection should be carried out.
a) new products or old products to the plant production trial setting acceptance time;
B) after the official production, such as structure, materials, processes greatly changed;
c) normal production totaled 300,000 or continuous production for three months;
D) After the product long-term shutdown, resume production;
e) factory inspection results are quite different and the last type test results;
f) the national quality supervision agency requirements for type testing.
If the type test failed, the product should be discontinued until the order to resume production after passing the type test.
7.3.2 Type inspection items shall conform to Table 2.
Table 2 Test items
No. Test items Test methods to determine the type test according to factory inspection
1 right angle fastener Performance Test 6.2 5.9 √ √
2 Swivel Coupler Performance Test 6.3 5.9 √ √
3 docking fastener tensile performance test 6.4 5.9 √ √
4 base compression testing 6.5 5.9 √ √
5 visual appearance inspection, measuring 5.10 √ √
7.4 Sampling Method
7.4.1 according to GB/T 2828.1 normal inspection specified in sub-sampling program of sampling, see Table 3.
Table 3 normal inspection sub-sampling program
Test items special item category Test level AQL range sample batch sample size Ac Re
main project
Anti-slip deformation properties
Vandal resistant properties
Tensile Properties
Compression performance
S-4 4
281 to 500
the first
second
501 to 1200
the first
second
1201 to 10000
the first
second
General appearance of the project S-4 10
281 to 500
the first
second
501 to 1200
the first
second
1201 to 10000
the first
second
NOTE. AQL --- acceptance quality limit; Ac --- receiving data; Re --- rejection number.
7.4.2 type test sample should be used for random sampling in the factory inspection lot.
Batch acceptance range 7.4.3
Each batch of products should be more than 280. When the batch over 10,000, the excess shall be sampled separately in Table 3.
7.5 determination method
Appearance 7.5.1 single product there is a failure or performance indicators are one does not meet the provisions of Table 1, it shall be deemed to have failed.
7.5.2 Bulk product in accordance with Table 3 were determined.
7.5.3 When the performance, quality and appearance of the product complies with the requirements, in order to determine compliance.
7.5.4 For the average project unqualified acceptance of the product, after the manufacturer allow rework, re-sampling re-examination.
8 signs, packaging, transportation and storage
8.1 mark
8.1.1 shall be marked on the product.
a) Production reign;
b) the trademark;
c) Model.
8.1.2 Product marking shall be provided on the product certification shall be marked.
a) Name of the manufacturer;
b) the trademark;
c) the product name and specifications;
d) number;
e) date of manufacture;
f) inspectors mark.
8.2 Packaging
Fasteners should be classified packaged, tightly. The package should be product certification should be indicated on the packaging.
a) the manufacturer's name, address;
b) the trademark;
c) the national industrial production license logo and number;
d) implementation of the standards;
e) the product name and model number;
f) number.
8.3 Transportation and storage
Products in the transportation, storage, should be taken to moisture, anti-corrosion measures.
Appendix A
(Informative)
Test results are reported in Table
A.1 right angle fasteners anti-slip deformation, anti-sabotage performance tests recorded in Table A.1.
Table A.1 right angle fasteners anti-slip deformation, anti-sabotage performance test record
Sample No. standard test results standard test results Remarks
P = 10.0kN time,
Δ1≤7.00mm
P = 15.0kN time,
Each part should not undermine
A.2 rotating fastener anti-slip deformation, anti-sabotage performance tests recorded in Table A.2.
Table A.2 rotating fastener anti-slip deformation, anti-sabotage performance test record
Sample No. standard test results standard test results Remarks
P = 7.0kN, the
Δ1≤7.00mm
P = 10.0kN time,
Each part should not undermine
A.3 docking fastener tensile properties of test records Table A.3.
Table A.3 docking fastener tensile performance test record
Sample No. standard test results Remarks
P = 3.0kN time, Δ≤2.00mm
A.4 base compression performance test records Table A.4.
Table A.4 base compression performance test record
Sample No. standard test results Remarks
P = 50.0kN, the various parts should not undermine
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