... Carbon steel elbowsSize 1/2"-48"(seamless pipes)MaterialWPB A234, or according to customer s requirement.Type Butt-welded seamless carbon steel ... Oil, chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction, etc.QualityFirst-classAuthenticationISO 9001 ... kinds of elbows, tees, reducers and mechanical processing machines of elbows push-type forming ...