* standard ANSI/ASME elbow *completely meet ANSI/ ASME B16.9 standard Size1/2"- 72"Wall thicknessSch 10- Sch xxsApplicable standardANSI B 16.9,ASME , ASTM,,JIS , DIN , EN,MaterialCarbon steel, alloy steel, stainless steel ConnectionButt-welding,forged fittingApplications rangsuch as oil, chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction etc ...