Seamless Steel Pipe 1.OD:4" to 24" 2.W.T.:SCH20,30,40,60,STD XS, ... ),API,BS,DIN,and JIS standards. tee : DN15---DN1200 according to the ANSI standard,DIN 2527,2573,2576,2642,2633,as ... …ECTreducer: widely used in the smelting, foodstuff, papermaking, chemical equipment, heat exchanger and other fieledsseamless pipe Stainless Steel Pipe Fitting