S/R 90 Elbow We could produce according to the ASNE,ASTM,JIS,DIN standards. S/R 90 ElbowWe specialize in the carbon steel ... and flanges.MaterialCarbon steel, stainless steel, alloy steel,we can produce according to material appointed by consumers.StandardANSI,ASME,API5L,DIN,JIS ... ,BS,GBWe can also produce according to the drawing by customerWall ThicknessSCH20, SCH30,STD,SCH80,SCH100 ...