Seamless Steel Pipe 1.OD:4" to 24" 2.W.T.:SCH20,30, ... steel cap : ASTM(ANSI),API,BS,DIN,and JIS standards. tee : DN15---DN1200 according to the ANSI standard,DIN 2527,2573 ... smelting, foodstuff, papermaking, chemical equipment, heat exchanger and other fieledsseamless pipe Stainless Steel Pipe Fitting