Hebei Chiho tube industry; concentric reducer (concentric size head) does not produce corrosion, pitting, corrosion or wear and tear in the industry can fully play a good role and performance. Concentric reducer (concentric size head) show in certain industries and sectors important role and performance, display certain advantages and characteristics in use, one concentric reducer or metal for building materials in the highest material strength. Concentric reducer (concentric size head) resistance of air, steam, water and other corrosive medium and weak acid, alkali, salt and other chemical etching medium corrosion of steel. Also known as acid-resistant stainless steel. Practical application of carbon steel reducer steel manufacturers, often weak corrosion medium corrosion of steel called a concentric reducer, and the chemical resistance of steel known as acid corrosion. As the two differences in the chemical composition, the former does not necessarily chemical resistance corrosion, then who are generally of a stainless steel. concentric reducer (concentric size head) of reduced diameter forming process is placed in a forming die with a diameter equal to the diameter pipe big end of the tube, through the tube along the axial direction pressing the metal along the cavity forming motion and contraction. Adjustable according to the size of the diameter pipe diameter pipe steel prices, into one or more press-forming press forming. Expanding forming concentric reducer is to use less than the diameter of the tube diameter pipe big end, along with the inner tube inner diameter expanding die forming. Concentric reducer (concentric size head) expanding process mainly to solve easily adjustable too large diameter pipe formed by necking the case, sometimes depending on the material and products shaping needs of the expanding and necking methods combined. In necking or expanding deformation pressing process, depending on the material and adjustable, to determine the use of cold or hot. Under normal circumstances, maximize the use of cold, but for many adjustable serious situation caused by hardening of the wall thickness of partial thickness of the case or alloy material should be used hot. Hebei Chiho Pipe size of the first concentric circle that is in the same line of the size of the head called a concentric size head, if the center is not on the same line, it is called the eccentric head, concentric size head is made of steel or wrought thermoforming playing molded head size, it is connected directly to the size of the head in the form of steel pipe welding, concentric size of the head of the main manufacturing standards generally GB / T12459, GB / T13401, ASME B16.9, SH3408, SH3409, HG / T21635, HG / T21631, SY / T0510. Concentric size head there corresponding eccentric head, the size of the head materials are carbon steel, alloy steel and stainless steel head size, head size. Head size is to change a tube pipe flow, allowing larger diameter pipe or a smaller head size (diameter pipe) is applied to a pipe at the pipe reducers. Forming process commonly used to suppress necking, expanding suppress or necking plus expanding suppress certain specifications diameter pipe may also be stamping. Diameter carbon steel pipe manufacturers, Hebei Chiho (certified), carbon steel reducer by Chiho Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) Hebei Cangzhou, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Hebei Chiho leadership with the staff warmly welcome all inquiries negotiations to create the Hebei Chiho better future.