We are a professional steel pipes and fittings supplier who mainly supply various kinds of carbon steel pipes, stainless steel pipes, alloy pipe for convey of water, oil and gas in petroleum and natural gas industry and steel structures for building construction and shipbuilding and other industries together with all kinds of steel pipe fittings, if you are interested in us please visit our website at: ***** to learn much more information about us，of course please contact me by nancy at derbosteel dot com. We mainly offer the following steel series: 1. Steel pipes and tubes，carbon steel, stainless steel and alloy, painting, oiling and galvanizing. 2. Various elbows, bends, tees, crosses, pipe caps and reducers, plugs nipples etc. 3. Flanges, such as SO, WN, BL, PL, THREAD, SW，SPECTACLE BLIND etc 4. All kinds of steel gaskets Standards mainly including ASTM, ASME, API, JIS, DIN, BS, ISO etc We have obtained ISO9001 and API certificate. And have mainly exported our products to Africa, South east and South Asia, Middle-East Asia, and South American etc.