Towing chain Grade 30

steelcarbon steelzinc-plated

Product Overview
Grade 30 proof coil chain manufactured from low carbon steel. Minimum ultimate (breaking) load approximately 4 × Working Load Limit (WLL). Proof tested at 2 × WLL with certification. Available finish: self-colored (natural) or galvanized.

Introduction
Grade 30 proof coil chain is a general-utility chain intended for non-overhead applications such as agricultural use, log chain, tow chain and switch chain. It is produced to NACM/ASTM classifications for Grade 30 chains and offered in continuous lengths for industrial and farm use.

Caution

• Do not use for overhead lifting.
• DO NOT EXCEED THE WORKING LOAD LIMIT (WLL).

Parameters
Grade of chain: NACM and ASTM classify chains by grade; Grade 30 denotes a general utility chain with specified working load limits.

Working Load Limit (WLL): Rated capacity that should not be exceeded in direct tension on an undamaged straight length of chain.

Proof test: Manufacturing test performed at 2 × WLL to verify production integrity; proof test values are for acceptance testing and not for design use.

Minimum breaking force: Manufacturer’s minimum measured breaking force (approx. 4 × WLL); breaking force is an attribute test and not a service design criterion.

Overhead lifting: Lifting operations that would place a suspended load over personnel or property; this chain is not certified for such use.

Dimensions and Loads (selected sizes)
Size (MM) | D +/- (MM) | Inside Length A (MM) | A +/- (MM) | Outside Width B (MM) | B +/- (MM) | Working Load (KG) | Test Load (N) | Breaking Load (N) | Weight Per M (KG)
3 | 0.5 | 26 | 1.2 | 12 | 0.6 | 55 | 1050 | 3200 | 0.15
4 | 0.5 | 32 | 1.5 | 16 | 0.8 | 100 | 2000 | 6000 | 0.27
5 | 0.5 | 35 | 1.8 | 20 | 1.0 | 160 | 3150 | 10000 | 0.43
6 | 0.5 | 42 | 2.0 | 24 | 1.2 | 224 | 4500 | 14000 | 0.63
7 | 0.5 | 49 | 2.5 | 28 | 1.4 | 300 | 6000 | 18000 | 0.86
8 | 0.5 | 52 | 2.5 | 32 | 1.6 | 400 | 8000 | 25000 | 1.10
9 | 0.5 | 59 | 3.0 | 36 | 1.8 | 530 | 10500 | 32000 | 1.41
10 | 1.0 | 65 | 3.2 | 40 | 2.0 | 630 | 12500 | 40000 | 1.75
11 | 1.0 | 72 | 3.4 | 44 | 2.0 | 790 | 15800 | 47500 | 2.11
12 | 1.0 | 78 | 3.6 | 48 | 2.3 | 940 | 18800 | 56500 | 2.55
13 | 1.0 | 82 | 4.0 | 52 | 2.5 | 1000 | 21200 | 63000 | 2.95
16 | 1.0 | 100 | 5.0 | 64 | 3.2 | 1600 | 33000 | 100000 | 4.45
18 | 1.0 | 113 | 5.2 | 70 | 3.2 | 2120 | 42300 | 127000 | 5.65
19 | 1.0 | 119 | 5.6 | 72 | 3.4 | 2370 | 47300 | 142000 | 6.25
20 | 1.0 | 120 | 6.0 | 75 | 3.8 | 2500 | 50000 | 160000 | 7.00
22 | 1.0 | 127 | 6.0 | 82 | 4.0 | 3170 | 63300 | 190000 | 8.55
25 | 1.0 | 140 | 6.6 | 88 | 4.2 | 4090 | 81700 | 245000 | 10.90
28 | 1.0 | 152 | 7.0 | 96 | 4.7 | 6000 | 120000 | 300000 | 13.90
32 | 1.0 | 171 | 7.8 | 108 | 5.2 | 8000 | 160000 | 400000 | 18.20

Standards & Packaging
Standard: Grade 30 proof coil chain
MOQ: 100 Meters
Package: Carton + Steel Pallet

Technical specifications

• Material: Low carbon steel
• Finish: Self-colored (natural) or galvanized
• Proof test: 2 × Working Load Limit (manufacturing test)
• Minimum ultimate/breaking load: approximately 4 × Working Load Limit (manufacturer’s minimum)
• Working Load Limit (WLL): rated capacity for direct tension on undamaged straight chain
• Applications: general utility chain for farm use, log chain, tow chain, switch chain
• Not suitable for overhead lifting
• MOQ: 100 meters
• Packaging: Carton + steel pallet