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Grade 43 High Test Chain is also called G4 or G40 chain, which is a heat-treated alloy steel chain. Its performance is lower than G70 chain but higher than G30 Proof Coil Chain., construction, agricultural and lumbering operations.Not to be used in overhead lifting.Flash welding is adopted, and the weld surface is smooth, flat and free of burrs.Various surface treatments such as hot-dip galvanizing and electro-galvanizing are available.Proof tested to 2x the Working Load Limit.
Our Grade 43 High Test Chain combines exceptional strength with outstanding durability, making it a reliable choice for a wide range of heavy-duty applications. With its high-quality construction and versatile design, you can· trust this chain to deliver consistent performance and safety in even the most demanding conditions.
Chain Size d |
Inside Length max. p |
Inside Width min. b1 |
Working Load Limit WLL |
Proof Load MPL |
Breaking Load MBL |
||||||
(inch) |
(mm) |
(inch) |
(mm) |
(inch) |
(mm) |
(lbs) |
(kg) |
(lbs) |
(KN) |
(lbs) |
(KN) |
1/4 |
7.0 |
1.24 |
31.5 |
0.38 |
9.8 |
2600 |
1180 |
3900 |
17.3 |
7800 |
34.6 |
5/16 |
8.7 |
1.29 |
32.8 |
0.44 |
11.2 |
3900 |
1770 |
5850 |
26.0 |
11700 |
52.0 |
3/8 |
10.0 |
1.38 |
35.0 |
0.55 |
14.0 |
5400 |
2450 |
8100 |
36.0 |
16200 |
72.0 |
7/16 |
11.9 |
1.64 |
41.6 |
0.65 |
16.6 |
7200 |
3270 |
10800 |
48.0 |
21600 |
96.0 |
1/2 |
13.0 |
1.79 |
45.5 |
0.72 |
18.2 |
9200 |
4170 |
13800 |
61.3 |
27600 |
122.6 |
5/8 |
16.0 |
2.20 |
56.0 |
0.79 |
20.0 |
13000 |
5910 |
19500 |
86.5 |
39000 |
173.0 |
3/4 |
20.0 |
2.76 |
70.0 |
0.98 |
25.0 |
20200 |
9180 |
30300 |
134.7 |
60600 |
269.4 |
7/8 |
22.0 |
3.03 |
77.0 |
1.08 |
27.5 |
24500 |
11140 |
36750 |
163.3 |
73500 |
326.6 |
!This product is strictly prohibited from being used for overhead lifting.
!Any surface coating will affect the mechanical properties of the chain.Please ask staff for details.
We follow standards:
NACM2010
Optional surface treatment: natural black, powder coating, black electrophoresis, electro-galvanizing, hot-dip galvanizing, Dacromet.
Chain should be inspected every six months for cracks, gouges, wear, elongation, nicks, and suitability.
Chain performance can be effected by excessive temperatures or exposure to chemically active environments such as acids, corrosive liquids or fumes.
When mixing chain and components such as hooks and links, all should be rated at the work load limit of the lowest rated component or chain.
Ambient temperature during use:
Min.: -40 ℃
Max.: 200 ℃
If the application scenario exceeds or is lower than the recommended operating temperature, please consult the staff to see if it is feasible.