Low alloy pipe fittings manufacturer, Hebei Thai Extension pipe flange factory is the strongest low-alloy pipe fittings manufacturer, I plant based on local facing the country, innovation, continuous improvement has introduced several sets of world's most advanced pipe production line can produce a variety of materials low-alloy fittings and stainless steel pipe fittings can also be customized according to customer request processing a variety of difficult pipe, you only need to dial the phone, we have to solve the problem, please consult the discussion. diameter pipe, also known as size head. One chemical pipe fittings, for connection of two different diameters. Head size is divided into concentric and eccentric head. Diameter pipe materials including stainless steel diameter pipe (304,304L, 316,316L), alloy steel, carbon steel size head diameter pipe diameter pipe on the 20th-diameter pipe and other steel q234q345 standard: American Standard British standard as well as the kinds of non-standard high-pressure press. Diameter seamless tube production: diameter pipe (size head) for a tube at the pipeline reducers. Forming process commonly used to suppress necking, expanding suppress or necking plus expanding suppress certain specifications diameter pipe may also be stamping. . a necking / expanding forming: Reducer reduced diameter forming process is the same diameter as the diameter pipe big end of the tube into the forming die, along the axial direction of the tube pressing the metal along mold forming chamber movement and contraction. Depending on the size reducer adjustable, divided into one or more press-forming press forming. 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 adopt hot low alloy fittings is the most widely used manufacturing machinery One of the tube. After quenching with good mechanical properties, good low temperature impact toughness and low notch sensitivity. Steel hardenability good, when water quenching can hardenability to Ф28 ~ 60mm, when oil quenching can hardenability to Ф15 ~ 40mm. In addition to refining treatment outside of this steel is also suitable and high-frequency quenching. Cutting better, when the hardness of HB174 ~ 229, the relative machinability of 60%. The steel is suitable for the production of medium-sized plastic mold.