Ethylene Plant Steam Cracker Coil Systems 1.Standard:ASME,ANSI,ASTM,DIN ... MA 3.ISO9001:2008 Ethylene Plant Steam Cracker Coil Systems1.Standard:ASME,ANSI,ASTM,DIN,GB2. ... well over 150,000 mta.Pyrolysis heater radiant coil characteristics(single heater range)Number of coils ... pressure,KPa150-275Clen coil pressure drop,KPa10-200Ethylene capacity,mta20,000-250,000 Ethylene Plant Steam Cracker Coil Systems