... GB 2.Material:25Cr35Ni+MA 3.ISO9001:2008 Heater Radiant Coil1.Standard:ASME,ANSI,ASTM,DIN,GB2.Material:Alloy ... cracking tubes were rranged in horizontal rows in a radiant chamber,leading to low ethylene capcity(20,000 mta ... furnace is well over 150,000 mta.Pyrolysis heater radiant coil characteristics(single heater range)Number of coils 2 ... KPa10-200Ethylene capacity,mta20,000-250,000 Heater Radiant Coil