... ,GB 2.Material:25Cr35Ni+MA 3.ISO9001:2008 Ethylene Plant Steam Cracker Coil Systems1.Standard:ASME,ANSI,ASTM,DIN,GB2.Material ... ,advanced testing equipment to ensure thye quality,6.Packing:Wooden box ,sea-worthy plywood pallets with polyethylene film or steel cases ... % vol. Feed is heated and cracked in the presence of steam by tubular furnace,outlet temperature 815-870°C.Special construction ...