... steel Surface:blackened Proof Coil Chain ASTM 80/G30 We can supply various kinds of chains,commercial chains,high tensile chains ... Lifting chain,Lashing chain,chains for ship,fishing chain,three-link chain for coal transfer,transport chain……Material:carbon steel,alloy steel,high-quality ... ,electro galvanized,PVC coated or as you required.Grade:G30,G43,G70,G80,C100Manufacture Standard:ISO,DIN, ...