Cangzhou Bohai specializing in the production of carbon steel pipe diameter pipe flaring diameter pipe forming is to use less than the diameter of the large end of the tube, along with the inner tube inner diameter expanding die forming. Expanding process is mainly to solve the larger diameter pipe easily adjustable by necking forming large diameter steel case diameter pipe wholesale, sometimes depending on the materials and products shaping needed, expanding and necking methods combined. Cangzhou Bohai Pipe Fittings Co., Ltd. specializes in steel-diameter pipe in necking or expanding deform the pressing process, depending on the material and adjustable diameter steel pipe manufacturers Cangzhou situation, determine the use of cold or hot. Typically carbon reducer, as cold pressing, but multiple adjustable and cause severe work hardening, the wall thickness of the case or the uneven thickness of the steel material should be adopted hot pressing. In addition to stamping steel pipe outside diameter pipe for the raw materials to produce, on the part of the specifications of the reducer can be adopted with steel stamping process for production. Stretching die shape using a reference surface of the inner diameter pipe size design, with the steel stamping die cutting after the stretch forming. Cangzhou diameter steel pipe manufacturer _ cheap (certified) _ Carbon Steel Pipe Co., Ltd. Reducing provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) is an industry leader in Cangzhou, Hebei, three, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Cangzhou Bohai leadership with the staff warmly welcome all inquiries negotiations to create a better future Cangzhou Bohai.