Stainless Steel Chains: Standard: US type ASTM machine chain, ASTM coil chain, ASTM grade 30, 43, 70 chain and so on Stainless Steel Chains:1 ... ) Standard: US type ASTM machine chain, ASTM coil chain, ASTM grade 30, 43, 70 chain, NACM 84/90 standard link chain (G30, G43), NACM 96 ...