... elbow 3.Material:carbon steel 4.Connection:We 90 Degree SquareTube Elbow1.Size:1/4"-48" 2.Type:carbonsteel elbow 3 ... .Material:carbon steel 4.Connection:Welding Product name90 Degree SquareTube ElbowSize1/4"-48"MaterialCarbon SteelUsed inOil Field,Offshore,Gasoline,Water ... ,Building ConstructionStandardANSI, JIS,DIN,GB,BSThicknesssch5s-xxsQualityFirst Grade 90 Degree SquareTube Elbow