Steel-diameter pipe (size head) pipe fittings material which is a low carbon structural steel, low content of alloying elements, reducers, generally below 3%, Nanchang diameter pipe, which is characterized by significantly higher intensity the same amount of carbon as carbon steel, Guiyang diameter pipe, has good toughness and ductility and good weldability and corrosion resistance. Alloy steel alloying elements according to different, they have different properties, such as high wear resistance, corrosion resistance, low temperature, high magnetic properties, good special properties. In order to improve the performance of the steel, the addition of other alloying elements on the basis of carbon steel, such as silicon, manganese, chromium, nickel ,, tungsten, vanadium, titanium, etc., this is called Alloy Steel (Alloy steel). Divided by use of steel alloy structural steel, alloy tool steel and special properties of the steel. Yanshan County Bo Yan Pipe Co., Ltd. wholeheartedly welcome new and old customers to visit the factory, inspected and negotiations guidance, growing customer demand, is our eternal pursuit of unremitting efforts, Yanshan County Bo Yan Pipe Co., Ltd. staff , willing to quality products, good service, dedication and work together with friends and achieve win-win situation, create brilliant. Yanshan County Bo Yan Pipe Co., Ltd. mainly produces steel seamless pipe fittings, steel pipe joints, forged fittings, flanges and other forged products pressure piping components, power accessories, concrete pump pipe fittings and other products, please call us diameter welded steel pipe is hot pressing or forging molding size of the head, it is connected directly to the size of the head form is welded steel pipe. Butt-diameter pipe generally concentric and eccentric head size head, materials are carbon steel, alloy steel and stainless steel. Diameter welded steel pipe is hot pressing or forging molding size of the head, it is connected directly to the size of the head form is welded steel pipe. Butt-diameter pipe generally concentric and eccentric head size head, materials are carbon steel, alloy steel and stainless steel. The main butt diameter pipe manufacturing standards are generally GB / T12459, GB / T13401, ASME B16.9, SH3408, SH3409, HG / T21635, HG / T21631, SY / T05010, Ministry of standard GD0506 ~ 0507 Pressure Vessel supporting flanges, tube sheet corresponding standards: JB / T4700 ~ 4707-2000 implementation of national standards (GB / T9112-2000), Nanjing diameter pipe, machinery of the standard (JB / T81-1959, JB / T74-1994), Petrochemicals Standard (SH3406-1996), marine standards GB / T10752-1999, Ministry of Chemical Industry Standard (HG / T5010-1958, HG / T20592-2009) and so on. Forged flange material exports meet US ASTM A105 standards. Beijing diameter pipe diameter pipe _ _ Bo Yan Pipe Industry (view) Ltd provided by Yanshan County Bo rock pipe industry. Yanshan County Bo Yan Pipe Co., Ltd. (www.czbygy.com) Hebei Cangzhou, elbow leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Bo rock pipe industry leadership with the staff warmly welcome all inquiries negotiations to create rich rock pipe industry a better future.