... ,DIN,GB 2.Material:25Cr35Ni+MA 3.ISO9001:2008 Ethylene Plant Steam Cracker Coil Systems1.Standard:ASME,ANSI,ASTM,DIN,GB2 ... Da Qing Petrochemical Company 1,200,000 Ton/Year Ethylene Plant.Commercial furnacesThermal cracking of hygrocarbons is accomplished in tubular reactors ... pressure drop,KPa10-200Ethylene capacity,mta20,000-250,000 Ethylene Plant Steam Cracker Coil Systems