... ,GB 2.Material:25Cr35Ni+MA 3.ISO9001:2008 Ethylene Plant Steam Cracker Coil Systems1.Standard:ASME,ANSI,ASTM,DIN, ... your requirement4.Process:centrifugal casting5.Quality:appearance of smooth,can work under presure for long time,advanced testing equipment to ... Da Qing Petrochemical Company 1,200,000 Ton/Year Ethylene Plant.Commercial furnacesThermal cracking of hygrocarbons is accomplished in tubular ...