carbon steel buttweld fittings standard: ASME,JIS,DIN Type: elbow,tee,cap,reducer,. Size:1/4"-48" Thickness:SCH10-SCH160 seamless buttweld fittings- TypeTEE,ELBOW,REDUCERSize1/2"- 48"Wall thicknessSch 10- Sch xxsApplicable standardASME , ASTM, MSS ,JIS , DIN , EN,MaterialCarbon steel :ASTM A234 WPB ANSI B16.9ConnectionButt-weldingApplications rangsuch as oil, chemical industry, water conservancy, ...