... - Sch xxs Applicable standard ASME , ASTM, MSS ,JIS , DIN , EN, Type steel elbowSize 1/2"- 80"Wall thickness Sch 10- Sch ... : 304 or 316Connection Butt-welding Applications rang such as oil, chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction etc ...