... Size: 4mm-32mm alloy steel chains Introduction:We are specialized in supplying high strength chain, alloy steel hoist chain, transport ... have been exported to Korea, Canada, Colombia, Italy, South Africa, United State etc 1) Grade: G80, G70, G60, G43, G30 alloy steel ... , ASTM), European Standard (EN818), AS/NZS StandardWorking procedures of Grade 80 Alloy Steel Chains:1. Receive the purchase order 2 ...