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reducer
reducer

reducer

Reducing pipe is one of chemical pipe fittings, used to connect two different pipe diameters. Divided into conc...
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Reducing pipe is one of chemical pipe fittings, used to connect two different pipe diameters. Divided into concentric size head and eccentric size head.

Production methods

The roundness of the reducing pipe shall not be greater than 1% of the outer diameter of the corresponding end, and the allowable deviation shall be ±3mm. The reducing pipe is made of SY/T5037, GB/T9711, GB/T8163, ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM A234, ASTM A106, DIN German standard and customer requirement standard

Reducing pipe (size head) is a kind of pipe fitting which is used in pipe reducing. Generally, the forming process is reduced diameter pressing, reaming pressing or reducing diameter plus expanding pressing.

Shrink/enlarge forming

The reducing diameter forming process of reducing tube is to put the tube blank with the same diameter as the large end of reducing tube into the forming die, and make the metal move and shrink along the die cavity by pressing along the axial direction of the tube blank. According to the size of reducing pipe diameter, it can be divided into one press forming or multiple press forming.

The tube billet which is smaller than the diameter of the big end of the reducing tube is used to form the tube billet along the inner diameter of the tube. The reaming process mainly solves the problem that reducing pipe with larger diameter is not easy to form through reducing diameter.

In the process of reducing or expanding the diameter, according to different materials and reducing the diameter, determine the use of cold or hot pressing. Usually, as far as possible to use cold pressure, but for multiple diameter changes and cause serious work hardening, wall thickness slant thick or alloy steel material should be used hot pressure.

stamping

In addition to using steel pipe as raw material to produce reducing pipe, some specifications of reducing pipe can also be produced by stamping process of steel plate. The punching die used for drawing is designed according to the surface size of reducing tube.