Ethylene Plant Steam Cracker Coil Systems 1.Standard:ASME,ANSI,ASTM,DIN,GB 2.Material:25Cr35Ni+MA 3.ISO9001:2008 Ethylene Plant Steam ... Cracker Coil Systems1.Standard:ASME,ANSI,ASTM,DIN,GB2.Material:Alloy ZG40Cr25Ni35Nb,Hp-Nb+MA3.Size:Dia.86/73X10820 or ... capacity,mta20,000-250,000 Ethylene Plant Steam Cracker Coil Systems