1.OD:1/2"-48" 2.WT:SCH5-SCHXXS 3.Material:A234WPB,304,Q235 and so ... ,ANSI,JIS,DIN and so on TechnicsSeamless Elbow, Welded ElbowSize1/2"-48"(DN15-DN1200)VarietiesSCH5,SCH10,SCH20,SCH30,STD, SCH40, SCH60,XS ... -12459/GB-T13401,Gost17375MateriaCarbon steel: ASTM A234 GR WPB , ST37.2 , ST35.8……Alloy steel: A234 WP5/WP9/WP11/WP22/WP91 ...