... 3.Material:carbon steel 4.Connection:Weldi 90 degree elbow r=1.5d1.Size:1/4"-48" 2.Type:carbonsteel elbow ... .Material:carbon steel 4.Connection:Welding Product name90 degree elbow r=1.5dSize1/4"-48"MaterialCarbon SteelUsed inOil Field,Offshore,Gasoline ... ConstructionStandardANSI, JIS,DIN,GB,BSThicknesssch5s-xxsQualityFirst Grade 90 degree elbow r=1.5d