reducer

Variable diameter pipe is a steel hot pressed or forged reducer, and its connection form is to directly weld the reducer with the steel pipe. The main manufacturing standard for concentric reducers is generally GB/T12459、GB/T13401、ASME B16.9、SH3408、SH3409、HG/T21635、HG/T21631、SY/T0510。
The centerlines of the two ends of the concentric reducer should coincide, and the allowable deviation of its eccentricity value is ± 5mm. The appearance of the concentric reducer should not have cracks or double skin, and the wall thickness should be greater than that of the large-diameter end pipe section. The allowable deviation of the size of concentric reducers shall comply with the provisions of Table 4.2.2-3. Reducing pipes, also known as reducers, are used to connect pipes of different sizes; Generally, it is divided into two types: concentric reducers and eccentric reducers. When the projections of the two ports of the reducer are concentric circles after it is erected, it is called a concentric reducer, while the projection of the eccentric reducer is a small circle inscribed on the outer circle
Corresponding to concentric reducers are eccentric reducers made of carbon steel, alloy steel, and stainless steel