... to customer s requirement.Type Butt-welded seamless carbon steel pipe elbow.Wall thicknessSCH10, SCH20, SCH30, SCH40, STD, SCHXS, ... : JIS B2311, JIS B2312Application Oil, chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction, etc.QualityFirst-classAuthenticationISO ... machines of elbows push-type forming and chamfering. pipe fitting dimension 36"