Reducer is a kind of pipe fittings used in pipe size

Seamless reducer

Reducer is a kind of pipe fittings used in pipe size. Usually adopted for reducing the forming process of pressing, expanding to suppress or reducing and expanding, to certain specifications of the reducer and stamping can be applied.

Reducing diameter

Size reducing forming technology of the head is with the head big end diameter equal to the size of the pipe into the forming die, along the axial direction of tube billet by pressing, shrink along the cavity movement and metal forming. According to the size of the reducer, divided into the one of pressing or more press forming.


Besides using steel as raw material to produce the size of the head, on the part of the specifications of the size of the head can also be used steel plate stamping forming technology is adopted to improve the production. Used by stretching die shape inner surface size design with reference to the size of the head, use after blanking punching die, stamping steel stretch forming.

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steel elbow

Long-term storage of stainless steel elbow, should be regularly checked, often on the exposed surface must be kept clean, remove dirt, neatly stored in a dry and ventilated indoor place, is strictly prohibited stacking or open storage.Often keep the stainless steel elbow dry and Ventilate, keep the clean and tidy, according to the correct storage method of storage

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Welding neck flanges

The heavy welding neck flanges are also named heavy WN flanges, which are

hot formed from a circular section of steel plate having a very small co-axial

hole in the flange center. The steel around the hole is shear-formed downward

and outward by a tapered die plug which is forced by the small hole forming an

integral neck on the weld neck flange. A supporting ring die is radiused at its

inner corner to form a suitable fillet radius at the junction of the neck with

the flange proper. A suitable pre-forming or post-forming operation may be

required to compensate for any deflection in the work piece out of planar


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Manhole flange

FLANGEManhole flange according to the division it can be divided into

through-hole, three holes, four holes and oblique through-hole man, specifically

in Table 1 below. Among them, oblique through the hole is divided into 15 °, 30

°, 45 °, 60 °, 75 ° total of five. The angle of each oblique through hole can be

applied within ± 7.5