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Speaking of reducer pipes, how much do you all know about them?
Release time:
Feb 11,2022
When it comes to reducing tees, we might not be very familiar with them, but most people would recognize what “reducing couplings” are. A reducing tee is simply a type of reducing coupling, which comes in two main varieties: concentric reducing couplings and eccentric reducing couplings. These fittings are used when the flow rate of the fluid in a pipeline changes—either increasing or decreasing.
When it comes to reducers, we might not be very familiar with them, but most people should at least know what “reducing tees” are. A reducer is simply a type of reducing tee—also known as a reducing coupling—and it comes in two main types: concentric reducers and eccentric reducers. These fittings are used when the flow rate of a fluid in a pipeline changes, such as when the flow increases or decreases.
When the flow rate requirements do not vary significantly, at the pump inlet—and to prevent cavitation as well as ensure proper alignment with external components such as flow meters and control valves—special attention must be paid to the connections. Currently, the commonly used forming processes include diameter-restriction shaping, diameter-expansion restriction shaping, or a combination of both diameter-restriction and diameter-expansion restrictions. For certain specifications of reducer fittings, stamping can also be employed. Today, pipe fitting manufacturers will guide us through a closer look at these processes.
Reduced-diameter forming involves placing a tube blank—whose diameter at the larger end matches that of the reducer pipe—into a forming die. Pressure is then applied axially to restrict the movement of the tube blank, causing the metal to flow along the cavity of the die and undergo reduced-diameter shaping. Depending on the magnitude of the diameter change in the reducer pipe, this process can be categorized as either single-stage restricted forming or multi-stage restricted forming.
Expansion 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 blank along its inner diameter. Since expansion forming tends to produce reducer pipes with excessively large diameter variations that are difficult to form through reduction, it is sometimes necessary—depending on the material and the specific requirements of the product—to combine expansion and reduction forming processes.
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