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Let’s talk about how eccentric reducers are made.
Release time:
Nov 09,2021
The roundness of reducer pipes shall not exceed 1% of the corresponding outer diameter at either end, and the allowable deviation is ±3 mm. The materials used for reducer pipes shall comply with SY/T5037, GB/T9711, GB/T8163, U.S. standards ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM A234, German standards, and the standards specified by the customer.
The roundness of reducer pipes shall not exceed 1% of the corresponding outer diameter at either end, and the allowable deviation is ±3 mm. The materials used for reducer pipes comply with SY/T5037, GB/T9711, GB/T8163, U.S. standards ASTM A106/A53 GRB, API 5L, APT5CT, ASTM A105, ASTM A234, German standards, and the standards specified by the customer.
A reducer (also known as a pipe reducer or size reducer) is a type of pipe fitting used at locations where the pipe diameter changes. The commonly employed forming processes include reduced-diameter restriction, expanded-diameter restriction, or a combination of reduced-diameter and expanded-diameter restrictions. For certain specifications of reducers, stamping can also be used to form concentric reducers; a schematic diagram illustrating the reduced-diameter forming process for concentric reducers is shown below.
The reducing-diameter forming process for reducer pipes involves placing a tube blank with a diameter equal to that of the larger end of the reducer pipe into a forming die. By restricting the movement of the tube blank along its axial direction, the metal is forced to flow into the die cavity and undergo reduction in diameter. Depending on the magnitude of the diameter change in the reducer pipe, the process can be classified as either single-stage restriction forming or multi-stage restriction forming.
Bore-expanding forming involves using a tube blank whose diameter is smaller than the larger end diameter of the reducer pipe, and then using an internal punch to expand the bore along the inner diameter of the tube blank. The primary purpose of bore-expanding is to address the difficulty in forming reducers with significantly varying diameters through conventional reducing processes. In some cases, depending on material properties and product-forming requirements, bore-expanding and reducing methods are combined for use.
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