Alloy steel chains: 1.Material: 25Mnv, 20Mn2, Q235 2.Finish: blackened, zinc-plated, HDG 3.Size: 4mm-32mm alloy steel chains Introduction:We are specialized in supplying high strength chain, alloy steel hoist chain, transport chain, proof coil link chain and chain sling to satisfy your different lifting requirements. We produce link chains by automatic bending, trimming and welding machines, and ...