GB 11580-1989 Small boat anchor chain GB11580-1989 standard download decompression password: www.bzxz.net

UDC 629. 12. 015
National Standard of the People's Republic of China
GB11580—89
Small craft-Anchor chains
Issued on August 10, 1989
Implemented on March 1, 1990
State Bureau of Technical Supervision
National Standard of the People's Republic of China
Small craft anchor chains
Small craff--Anchor chains
This standard adopts the international standard IS04565—1986. Small craft anchor chains>. Subject content and applicable topics
This standard specifies the type, design, tolerance and galvanizing requirements of small boat anchor chains. This standard is not applicable to pin chains used for small anchoring. Its nominal chain diameter is 6-12.5 mm. This standard is not applicable to lifting chains.
2 Reference standards
GB549 Electric welded anchor chain
3 Product classification
GB 1158089
Small boat anchor chain Type, chain diameter, test load, mass per meter and chain link size shall be in accordance with Figure 1, Figure 2 and Table 1.fd.
Figure 1 Small boat chain link
r, nominal true diameter of small whole chain link
Wixmn = 1.35 dn:
Wm - 3.6:
P, = 3
Guohao Technical Supervision Bureau 1989-08-10 approved 1990-3 01 implementation
Grade chain steel M1
Test load, kN
Building example
1158089
Figure 2 Chain link
End chain link nominal diameter,
W: end chain link inner diameter +
P. Link pitch
i Grade pin Mt2
Test load, kN
Grade 1 anchor chain with a nominal diameter of 10mm and a pitch of 30mm is marked as: anchor chain M2-10GB1158089
Grade 1 anchor chain with a nominal diameter of 6mm and a pitch of 18mm is marked as: anchor chain M1-6 GL 11580 --89
5 Technical requirements
5.1 Mechanical bridge
The minimum tensile load and minimum breaking load of the end silicon ring
test are shown in Table 1. The corresponding mechanical energy is shown in Table 2. 2
Average stress under the specified breaking load, MPaAverage stress under the specified tensile load, MPaMaterial grade supply length,
5.2 Galvanized
M2 Chain pin
Except for special requirements, a strand of anchor chain should be hot-dip galvanized after completion. 5.3 Optimum length
The chain should be submitted according to the preferred length in Table 3 and matched according to Figure 3. 2
Weight per meter
M1 Phosphorus pinbZxz.net
GB 11580-89
Note: Other different lengths specified by the competent authority or the ship class shall also be considered as the preferred length. BCL
6 Test and acceptance
Length, m
6.1 Test and acceptance conditions specified in GB549 shall be followed, and the sample length shall be 5 links. 60
6.2 If the ordering party requires, the manufacturer shall provide a test and inspection certificate for each batch of chains, which shall include the following contents: a, national standard code;
number and characteristics,
identification mark;
chain nominal diameter, mm;
tension negative micro: kN;
breaking load, kN;
total ultimate elongation, %.
7 Marking
7.1 Quality marking: On the 20th link or on the link with a length of 1m, a clear mark or indentation shall be made, marked with the letter M2 (grade 1 anchor steel) or M1 (grade I anchor steel), the diameter of the marking plate is mm, 7.2 Identification mark: On all end links, a clear mark or indentation shall be used, or a fastened nameplate shall be used to permanently mark the identification mark, which shall include the manufacturer's trademark or symbol. Additional remarks:
This standard was proposed by China State Shipbuilding Corporation. This standard is under the jurisdiction of Dalian Shipyard.
This standard was drafted by the Seventh () Eighth Research Institute of the Seventh Research Institute of China State Shipbuilding Corporation, and the drafter of this standard is Wang Buyuan.
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