Steel Pipe Fittings manufacturer, Rayoung, offers a full range of ASME B16.9, ASME B16.28, ASME B16.49, GOST 17375, GOST 30753-2001, GOST 17376, GOST 17378, GOST 17379, EN 10253 butt weld pipe elbow, pipe reducer, pipe tee, pipe cross, pipe bends, and pipe caps……