Q235B reducer, 20 # reducer, 16MN reducer, 304 reducer

Reducing tube, also known as reducer. One of the chemical pipe fittings used for connecting two different pipe diameters. It is further divided into concentric and eccentric heads. Eccentric reducer (reducer)
Refer to pipe fittings. The materials of reducers include stainless steel reducers (304304l316316l), alloy steel, reducer carbon steel reducers, reducer 20 steel q234q345, etc. Reducing pipe standards: national standard, American standard, British standard, and various non-standard high-pressure stamping. The quality of the reducer should comply with the current national standard GB/T 12459-2005 "Steel Welded reducer fittings". The roundness of the reducer should not exceed 1% of the corresponding end outer diameter, and the allowable deviation is ± 3mm. The allowable deviation of the reducer size should comply with the provisions of Table 4.2.2-3. The reducer shall comply with SY/T5037, GB/T9711, GB/T8163, American standard ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM A234, ASTM A106, DIN German standards and customer requirements standards. The production of seamless reducing pipes. Reducing pipes (big and small heads) are a type of pipe fitting used for pipe diameter changes. The commonly used forming processes are reduced diameter pressing, expanded diameter pressing, or a combination of reduced diameter and expanded diameter pressing. For certain specifications of reducing pipes, stamping forming can also be used. a. The process of reducing/expanding the diameter of a reducing pipe is to place a billet with the same diameter as the large end of the reducing pipe into a forming mold, and by pressing along the axial direction of the billet, the metal moves along the mold cavity and shrinks into shape. According to the size of the diameter change of the reducer, it can be divided into one-time compression forming or multiple compression forming. The following is a schematic diagram of the reduced diameter forming of concentric reducers. Concentric reducer
The schematic diagram of reducing the diameter of concentric reducing pipes and expanding the diameter is to use a pipe blank smaller than the diameter of the large end of the reducing pipe, and expand the diameter along the inner diameter of the pipe blank using an internal die. The expansion process mainly solves the problem of difficult forming of reducing diameter pipes with large diameter variation. Sometimes, according to the material and product forming needs, the expansion and reduction methods are combined and used. In the process of reducing or expanding diameter deformation and pressing, cold pressing or hot pressing is determined according to different materials and diameter changes. Normally, cold pressing is preferred, but for cases where severe work hardening is caused by multiple diameter changes, thick wall thickness, or alloy steel materials, hot pressing is recommended. b. In addition to using steel pipes as raw materials to produce reducers, some specifications of reducers can also be produced using steel plates through stamping forming technology. The shape of the die used for stretching is designed based on the inner surface dimensions of the reducer, and the steel plate after cutting is stamped and stretched into shape using the die.
Characteristics of stress distribution or deformation:
(1) The phenomenon of relative opening of the large end and relative contraction of the small end caused by the bending moment generated by the area pressure difference between the large and small ends of the concentric reducer under internal pressure; (2) Under the action of internal pressure, the circumferential stress on the inner surface of the eccentric side of the eccentric reducer at the large end and the outer surface of the eccentric side at the middle is the highest.

Our company specializes in the production and sales of various stainless steel, carbon steel stamped elbows, flanges, tees, reducers, and other reducing pipe fittings. A professional manufacturer of non-standard flanges. All kinds of pipe fittings and flanges are produced according to national standards, and the quality meets the national technical inspection standards. They are widely used in engineering pipeline systems such as building fire protection and drainage, chemical, petroleum, power plants, boilers, pressure vessels, etc. The company has advanced equipment and strong capabilities, with 360 employees and an area of 100000 square meters. We have a history of over 20 years in the research and development of series products such as forged flanges and stamped pipe fittings, as well as the development of new products.