Ethylene Plant Steam Cracker Coil Systems 1.Standard:ASME,ANSI,ASTM,DIN,GB 2.Material: ... construction of the coils of this furnace guarantee short residence time that why this furnaces callwd SRT.Kellog Brown &Root ... oil.This furnace called SCORE,hve straight coils,short residence time about 0.1s nd low working pressure.Special construction ... ,mta20,000-250,000 Ethylene Plant Steam Cracker Coil Systems