Reducing pipe

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Variable diameter

Keywords:

Reducing pipe

A reducer, also known as a reducing coupling, is a pipe fitting used to connect pipes of different diameters. It is broadly classified into two main types: concentric reducers and eccentric reducers.

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Detailed description

A reducer, also known as a reducing coupling, is a pipe fitting used to connect pipes of different diameters. It is broadly classified into two main types: concentric reducers and eccentric reducers.

What on earth is this thing:

1. Core function: Connects large-diameter and small-diameter pipes to achieve a diameter transition.

2. Main categories:

- Concentric eccentricity: The centers of the two ends lie on the same straight line; this is the most common type.

- Eccentric reducer: The centers of the two ends do not lie on the same straight line, with one end flat and the other tapered.

3. Common materials: carbon steel, stainless steel ( 304/316L ), alloy steels, etc.

4. It goes by many names: reducing pipe, reducer, and rubber expansion joint (for rubber types), among others—any of these may be referred to as a “reducer.”

How to choose and how to use:

1. Concentric reducer: Typically used in vertical pipelines or in applications where liquid accumulation is not a critical concern.

2. Eccentric reducer:

- Top‑flat installation: Used in gas pipelines to prevent gas from accumulating and forming a gas pocket.

- Bottom‑flat mounting: Suitable for fluids containing impurities, facilitating drainage and preventing clogging.

- At the pump inlet: Eccentric reducers with a top-flat configuration are commonly used to prevent cavitation.

3. Connection methods include butt welding, threaded connections, clamp (groove) fittings, flanges, and more.

4. Application scenarios: petroleum, chemical, electric power, shipbuilding, food and beverage, pharmaceuticals, fire protection, and water supply and drainage, among others.

What’s the approximate range of specifications?

- Common specifications: from DN10/DN20 to DN1200 They all have it; the inch system starts from... 1/2" to 48" Not equal.

- Common expressions: such as DN80 × 50、 8" × 6" It has a large-diameter opening at the front and a small-diameter opening at the back.

- Wall thickness grade: Sch5s、Sch40、Sch80、 STD 、 XS etc., the most commonly used is STD and XS 。