... ,ASTM A234 WPB,Buttweld elbow,seamless buttweld elbow,LR/SR elbowSizeSeamless 1/2" - 78"Wall thicknessSch5S---XXSStandardASTM,ANSI, ASME, API5L, ... gradeProductivity6000T/YearOthers1.Special design available according to your drawing.2.Anti-corrosion and high-temperature resistant with black ... of productsOur main products are 45° and 90° LR/SR elbows,180° return bend, straight and reducing tees, ...