... zinc-plated, HDG 3.Size: 4mm-32mm alloy steel chains Introduction:We are specialized in supplying high strength ... Material: 20Mn2, 25Mnv, Q235 (alloy steel chains, mild steel chains, welded lashing chains, transport chains, lifting chains, load chains)4) Standard: National Standard (GB ... EN818), AS/NZS StandardWorking procedures of Grade 80 Alloy Steel Chains:1. Receive the purchase order 2. Product ...