ASTM A53 API 5L Gr. B Schedule 40 Black Welding ERW Steel Pipe For Oil Gas Water

　　ERW steel pipe welding technology adopts skin effect principle produced by high frequency current to heat hot rolled coil to molten state, then through the mechanical extrusion method to weld. Adopting this welding technology, ERW pipe welding seam center will have a white fusion line, and the heat affected zone on both sides of the fusion line will produce metal flow from the central to the extension direction to the surface. During the welding process, tube metal will round the heat cycle process cold, hot and cold again. So, parent metal physic-chemical properties, grain size and non-metallic inclusion as well as forming and welding conditions and heat treatment process will have an impact on the performance of the welded seam especially impact toughness. In the process of ERW steel tubes, choosing the impact toughness of the plates ensure the performance of welded steel pipes, combination of control and adjustment of the welding process ensure to reduce defects as far as possible and improve the weld seam performance.

ERW Steel Pipe Description

　　Established in 1989, Hebei Shengtian Pipe-Fitting Group Co., Ltd. located in Mengcun County Hebei Province China, covering a land area of 100,000 square meters, with a workshop of 25,000 square meters and registered capital of 110 million RMB. Our company has a strong staff team. There are over 360 employees, including over 30 professionals and technicians.

　　We are capable of manufacturing various pipe fittings. Our main products scope: steel elbow, tees, bends, reducers, caps, forged flanges and sockets. We have been in this line for over 20 years. Our products are exported to many countries and regions, such as Southeast Asia, the Middle East, Europe and America etc. Our pipes and pipe fittings enjoy a good reputation in domestic and foreign markets. Every year, hundreds of foreign visitors and innumerable domestic visitors come to our company for business cooperation.

　　We have first-class inspection devices, perfect detecting means and well-trained specialists. And we stick to ISO9000:2000 quality system and efficiently control procedure in production. We have confidence that we can supply the best quality products. We would like to take responsibility for any quality uncertainty. Even so, our price is competitive. Besides, we can provide the best service to you.

　　In order to avoid the policy of the anti-dumping duties imposed on pipe & fittings from the Europe, United States and other countries, We can re-export through other countries like Malaysia, etc, to circumvent the anti-dumping duties, which could make you to win more competitive price .

　　Our products are in compliance with many international standards

　　Pipe Standard: ASTM A53,A106,API 5L,ASME B36.10M---1996.

　　Pipe-Fittings Standard: ANSI B16.9/16.28,DIN 2605 / 2616,JIS P2311 / 2312,GOST.

　　Flange Standard: ANSI B16.5,DIN Series,JIS Series,GOST Series.

　　KEYWORD: butt welded pipe fittings,ANSI B16.9 pipe fittings,seamless pipe fitting.