Eccentric reducer

An eccentric head is a small head that is not in the same straight line. Its function is to stick to the wall or ground pipeline without occupying space, and is to connect two different caliber pipes, changing the size of flow.

The eccentric head is also called eccentric diameter pipe, which means the big head (diameter reducer) with the center of the circle not in the same straight line. Its function is to stick to the wall or ground pipeline without occupying space, and is to connect two different caliber pipes, changing the size of flow.

Eccentric head (different diameter pipe) product uses: LPG pipeline engineering, gas pipeline engineering, chemical plants, power plants, shipyards, pharmaceuticals, dairy products, beer, beverages, water conservancy, etc.

The big head (reducer) is a kind of pipe fitting used for pipe diameter. Usually, the forming process is shrinkage pressing, expanding pressing or shrinkage and expanding pressing. For some specifications of different diameter pipes, stamping can also be used.

The quality of eccentric pipe with different diameters shall conform to the current standard "Steel butt welded seamless pipe fittings" GB/T 12459-2005, and shall meet the following requirements:

1) the appearance of the diameter reducer should not be crack or heavy, and the wall thickness should be larger than the wall thickness of the large diameter end pipe section.

2) The roundness of the different-diameter pipe should not be greater than 1% of the corresponding outer diameter of the end, and the allowable deviation is (+3 mm), the center line of the two ends of the concentric different-diameter pipe should coincide, and the allowable deviation of the eccentricity is (+5 mm).

3) the size tolerance of the reducer shall meet the requirements of table 4.2.2-3.

Eccentric head of its pipe material is characterized by this kind of steel is a low-carbon structural steel, alloy element content is less, generally less than 3%. Eccentric head in the actual production in which different elements are added for different functions and strengths, the production standards and methods used to add, in which the use of performance. Eccentric head is characterized by its strength is significantly higher than the carbon steel with the same carbon content, with good toughness and plasticity, as well as good weldability and corrosion resistance. In order to improve and improve the properties of the steel, other alloy elements, such as silicon, manganese, chromium, nickel, tungsten, vanadium and titanium, are added to the carbon steel. This steel is called alloy steel.

The eccentric head has different properties according to the different alloying elements, such as high wear resistance, corrosion resistance, low temperature resistance, high magnetic properties and so on. Alloy steels are divided into alloy structural steels, alloy tool steels and special properties steels according to their uses. Eccentric head is reliable, sanitary, environmental protection, economical and applicable, thin-walled pipeline and the development of new reliable, simple and convenient connection method make it have more irreplaceable advantages of other pipe materials, engineering applications will be more and more, the use will be more and more popular, the prospect is good.