... plated, HDG 3.Size: 4mm-32mm alloy steel chains Introduction:We are specialized in supplying high strength chain ... produce link chains by automatic bending, trimming and welding machines, and automatic test machine. Our link chains have been ... 20Mn2, 25Mnv, Q235 (alloy steel chains, mild steel chains, welded lashing chains, transport chains, lifting chains, load chains)4) Standard: National Standard ( ...