... ASTM A234 WPB,Buttweld elbow,seamless buttweld elbow,LR/SR elbowSizeSeamless 1/2" - 78"Wall thicknessSch5S---XXSStandardASTM, ... oilApplicationChemical industry, petroleum industry, construction industry, domestic installation and otherDelivery Time7-20 daysQualityFirst gradeProductivity6000T/YearOthers1.Special ... main products are 45° and 90° LR/SR elbows,180° return bend, straight and reducing tees ...