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Upholding the corporate spirit of “Integrity, Harmony, Pragmatism, and Innovation,” we remain committed to a business philosophy that puts people first, embraces technological innovation, and emphasizes integrity and pragmatism.
Let me give you a detailed introduction to the performance of the big and small heads.
Release time:
Mar 29,2022
The width-to-thickness ratio of a reducer is smaller than that of a standard pipe fitting. Using reducers to manufacture annular parts can improve material utilization, simplify manufacturing processes, and save both materials and machining time. For example, components such as rolling bearing raceways and jack sleeves are now widely made from rubber. The primary advantage of reducers is that they can address the issue of differing diameters when connecting metal pipes; at the same time, they offer vibration damping and noise reduction effects, thereby reducing the need for additional pipe installation components and lowering costs.
The width-to-thickness ratio of stub ends is relatively small. Using stub ends to manufacture annular parts can improve material utilization, simplify manufacturing processes, and save both materials and machining time. For example, components such as rolling bearing races and jack sleeves are now widely made from rubber. The primary advantage of stub ends lies in their ability to address the issue of differing pipe diameters when connecting metal pipes; at the same time, they offer vibration damping and noise reduction effects, reducing the need for additional pipeline installation components and thereby lowering costs.
The reducer fittings can be used in areas with particularly cold climates as well as in regions with significant temperature differences. Thanks to their inherent expandable and contractile properties, these reducers effectively address thermal expansion and contraction issues in pipelines. First, the pipe billets undergo continuous three-roll rolling; after extrusion, they are subjected to diameter-measuring inspections. If no visible cracks are found on the surface, the round tubes are then cut by a cutting machine into billets approximately one meter in length.
Next, the annealing process begins. Annealing involves pickling with an acidic liquid. During pickling, pay close attention to whether numerous bubbles are forming on the surface. If a large number of bubbles appear, it indicates that the steel pipe’s quality does not meet the relevant standards. Dimensional accuracy requirements are relatively low, making it less likely to encounter shape defects; instead, the focus is on controlling camber. For materials with specific microstructural requirements, this is typically achieved through controlled rolling and controlled cooling—specifically, by precisely controlling the initial rolling temperature and the final rolling temperature during finish rolling.
Since this reducer is a commonly used component in water supply systems, the rubber with a thickness of t=30mm used as a pipe bridge must not only withstand internal water pressure but also bear the bending moment caused by the reducer’s own weight and the weight of the water. Therefore, the quality requirements for welding are particularly high. For flanges with a thickness of t=30mm used on reducers, both the longitudinal welds and the circumferential welds are classified as Type I welds.
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