1)size:10" 2)standard:ASME B16.9 3)WT:STD 4)material:ASTM 860 WPHY52 5)API,ISO,CE,etc ... elbow 90degree L.R.ASTM 860 WPHY52 STD size10" sizeSeamless:from 1/2" to 24"Welded:from 24 ... .5D, 3D,4D,5D,6D,7D-40D.thicknessSCH10,SCH20,SCH30,STD SCH40,SCH60, XS, SCH80., SCH100,SCH120, SCH140, SCH160, XXSstandardASME B16 ... particle inspection,etc elbow 90degree L.R.ASTM 860 WPHY52 STD size10"