Eccentric reducer application tips

The eccentric reducer is a kind of pipe fitting used for pipeline caliber.The commonly used forming process is reduced-diameter pressing, expanded-diameter pressing,or reduced-diameter plus expanded-diameter pressing, and certain specifications of different-diameter pipes can also be formed by stamping.

ASME B16.9 ASTM A860 WPHY70 SCH40 eccentric reducer

ASME B16.9 ASTM A860 WPHY70 SCH40 eccentric reducer

The role of eccentric reducer

The diameters of the two ends of the eccentric reducer are different, and they are used to connect pipes or flanges of different diameters to reduce the diameter. The two ends of the eccentric reducer are on the same axis. The position of the pipe is unchanged, and it is generally used for reducing the diameter of gas or vertical liquid pipes.

Inner circumferences of the nozzles at both ends of the eccentric reducer are generally used for horizontal liquid pipes. When the tangent point of the nozzles of the eccentric reducer is upward, it becomes a top-level installation, and is generally used for the pump inlet to facilitate exhaust. The tangent point is downward, it becomes the bottom flat installation, which is generally used for the installation of the regulating valve.

carbon steel eccentric reducer

carbon steel eccentric reducer

Application of eccentric reducer

In the actual production, the eccentric reducer is added with different elements for different functions and strengths, and it is added using certain production standards and methods. It has certain performance in its use. The eccentric reducer is characterized by its significantly high strength Carbon steel with the same carbon content has good toughness and plasticity, good weld ability and corrosion resistance, etc. In order to improve and improve the performance of steel, other alloy elements such as silicon and manganese are added on the basis of carbon steel , Chromium, nickel, tungsten, vanadium, titanium, etc., this kind of steel is called alloy steel.

The eccentric reducer has different properties according to the addition of alloying elements, such as high wear resistance, corrosion resistance, low temperature resistance, high magnetism and other good special properties. The middle of the eccentric reducer is the main pipe section, and the ends are eccentric Straight pipe section, there is an eccentric diameter reduction transition section between the main pipe section and the eccentric straight pipe section, the bottom line of the eccentric reducer is kept straight; the preparation method of the eccentric reducer is to use multiple sets of graded molds to directly perform eccentric diameter reduction on the metal pipe , First leave the main pipe section in the middle of the entire metal pipe, and then use multiple sets of grading molds to press according to the requirements of the variable angle and press it step by step. The eccentric reducer processed by the method of the present invention, the entire eccentric reducer There is no welding seam; the eccentric reducer is used as a special tube, which is used in highly corrosive liquids, which can extend the service life of the eccentric reducer, especially used as the casing of the eccentric water distributor underground. Corrosion cracking at the welding joint; flexible production process, can process eccentric reducer of any diameter and eccentric straight pipe lengths.

ASTM A234 WPB concentric reducers and eccentric reducers

ASTM A234 WPB concentric reducers and eccentric reducers

The size of the eccentric reducer is different, and the connected pipes are different, and the suitable industries are also different. In power, mining, metallurgy and other industries, materials are transported and exported at close distances and high pressures. The pipeline is under considerable pressure and is subject to severe wear and tear. It is difficult for a single material pipeline to meet this working condition. Requirements, especially pipe fittings such as elbows, concentric and small heads, stamping elbows, etc., due to their safety and service life, the focus is on improving the toughness, impact resistance and wear resistance of the pipeline lining. At the same time, the overall strength of pipes and elbows must also be considered.

Before bonding the eccentric reducer, use a dry cloth to wipe the socket side and the outside of the socket. When the surface is stained with oil, it must be cleaned with acetone. Pay attention to the following points:

  1. Control caliber: DIN standard, 3A / IDF standard, ISO standard;
  2. International industry standards: DIN, ISO, SMS, 3A, IDF,etc;
  3. Product material: stainless steel 304, 316, 316L.
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