grade 43 High Test Chain also known as G4 or G40 chain conforms to ASTM A413/A413M standards. Suitable for industrial, construction, agricultural and logging operations. These chains are not designed and produced for overhead lifting purposes. They are tested to 2 times the working load before leaving the factory.

TOPONE® can produce 100% ASTM A413 G70 chain, with regular sizes and Short Link options available.A high quality, high strength carbon steel chain, heat treated,Used for load securement.Not to be used in overhead lifting.Meets Department Of Transportation Regulations.The surface is yellow chromate color.TOPONE® grade 70 Chain is the chain of choice for load binding applications. It is also well suited for tie-downs, towing and logging operations. Its strength to weight ratio exceeds that of Proof Coil and High Test chain.

grade 80 Chain used in overhead lifting applications. 80 Chain has excellent energy absorption and is manufactured using special analysis alloy steel. G80 alloy chain is rugged, versatile, high-strength, low-weight chain. Quenched and tempered before proof testing, grade 80 chain specs & dimensions have tensile strength twice of ordinary steel chain.

Made of special CRNIMO alloy steel, 25~30% stronger than grade 80 chain. The weight for grade 100 chain is on average 20% lighter than grade 80 chain at the same working load. Meets the chain performance requirements of ASTM A973

TOPONE® grade 80 chain uses low-carbon alloy steel containing Cr, Ni, Mo, and Al. It is quenched at a temperature above AC3 and tempered at a temperature above 400 degrees Celsius. This makes the chain strong, tough, and fatigue-resistant. It is suitable for any cargo lifting or transportation lashing scenarios. All chains are tested for a tensile force of 2.5 times the working load before leaving the factory.The chain is stamped with "G8" grade and batch number identification.

Whether it is a farm, industrial scene or handmade DIY, this grade 30 Proof Coil Chain produced by TOPONE® can meet the needs. We can provide regular sizes and long ring links. The chain is made of carbon steel and is resistance welded. Various surface treatments can be selected.

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.

A high quality, high strength carbon steel chain, heat treated,Used for load securement.Not to be used in overhead lifting.Meets Department Of Transportation Regulations.The surface is yellow chromate color.TOPONE® grade 70 Chain is the chain of choice for load binding applications. It is also well suited for tie-downs, towing and logging operations. Its strength to weight ratio exceeds that of Proof Coil and High Test chain.

Premium quality, high strength alloy chain, heat treated, used in a variety of sling and tie down applications.For overhead lifting applications, only Alloy Chain should be used.Comply with US standards. Each chain link is tested at 2.5 times the working load before leaving the factory.