Grade 80 Welded Heat Treated Chain
Grade 80 welded heat treated chains are alloy steel calibrated lifting chains, which is used for lifting purpose, such as one-leg chain sling, double-leg chain sling, four-leg chain sling, chain hoist etc.
Material: 20Mn2 alloy steel
Size: 6-22mm heat treated chain
2.5 times proof load test
4 times safety factor
Hardness can reach 38-42HRC through hardened
Elongation is 10% min.
Smooth and stable welding, 100% calibrated chain
6-22mm Heat Treated Chain Technical Data according to EN818-2 or GB/T20947 short link chain Standard:
diameter mm | Pitch mm | Outside width mm | Working load limit ton | Proof load KN | Breaking load KN | Weight Kg/m |
6 | 18 | 20 | 1.12 | 28.3 | 45.2 | 0.8 |
7 | 21 | 24 | 1.5 | 38.5 | 61.6 | 1.1 |
8 | 24 | 27 | 2 | 50.3 | 80.4 | 1.4 |
9 | 27 | 30 | 2.49 | 62.4 | 99.8 | 18 |
10 | 30 | 34 | 3.15 | 78.5 | 126 | 2.2 |
11 | 33 | 37 | 3.715 | 93.2 | 149 | 2.74 |
12 | 36 | 41 | 4.41 | 106.2 | 177.4 | 3.24 |
13 | 39 | 45 | 5.3 | 133 | 212 | 3.8 |
14 | 42 | 48 | 6 | 152 | 242 | 4.3 |
16 | 48 | 54 | 8 | 201 | 322 | 5.7 |
18 | 54 | 62.64 | 10 | 254 | 407 | 7.3 |
19 | 57 | 66 | 11.37 | 283 | 453 | 8 |
20 | 60 | 70 | 12.5 | 314 | 503 | 9 |
22 | 66 | 74 | 15 | 380 | 608 | 10.9 |
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