Chains 1)Size: 2mm to 25mm 2)Surface treatment: EG,HDG 3)Packing: Gunny packing,steel pallet, bulk and so on. Features: 1) USA ... standard welded link chains include ASTM80(G30)2) Zinc-plated, yellow zinc ... transport chain4) ASTM80 sizes include 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", and 3/4 ...