Steel Pipe Reducer (Eccentric Reducer)

A steel pipe reducer (eccentric reducer) is a key pipe fitting used in piping systems to connect pipes of different diameters. In industrial piping systems, it plays a vital transitional role, ensuring a smooth transition of fluid between different pipe diameters.

Classification of Steel Reduce: Based on shape, steel reducers are mainly divided into two types:

• • Concentric reducer: The center line coincides with the center lines of the pipes at both ends, suitable for applications where a smooth fluid transition is required.
  • Eccentric reducer: The center line does not coincide with the center lines of the pipes at both ends, typically used for applications requiring an adjustment in pipe height.

Forming process:

• • Compression reduction: Compressing one end of the pipe material to a smaller diameter using hydraulic equipment.
  • Expansion pressing: Expanding one end of the pipe material to a larger diameter using hydraulic equipment.
  • Combined reduction and expansion pressing: A combination of reduction and expansion processes, suitable for complex-shaped reducers.
  • Stamping: For some specifications of reducers, a stamping process is used for forming.

Standard calibers:

• • DIN standard: Applicable for a diameter range of DN10 to DN150.

  • 3A/IDF standard: Applicable for a diameter range of 1/2 inch to 6 inches.
  • ISO standard: Applicable for a diameter range of Ф12.7 to Ф152.4.

Materials and Surface Treatment:

• • Common materials: Predominantly stainless steel, including 304, 316, and 316L. These materials have excellent corrosion resistance, high-temperature resistance, and hygienic properties, making them suitable for various complex working conditions.

    • 304 stainless steel: Cost-effective and suitable for general corrosive environments (e.g., fresh water, room-temperature liquids).
    • 316/316L stainless steel: Contains molybdenum, offering stronger corrosion resistance, especially in harsh corrosive environments like seawater and chemical media. The low-carbon property of 316L is more suitable for welding, as it reduces intergranular corrosion.
  • Surface treatment: Both internal and external surfaces are treated with advanced polishing equipment to achieve a high-precision surface finish. This not only reduces fluid resistance but also minimizes media residue, meeting the stringent requirements of the sanitary industry.

Steel Reducer Installation and maintenance:

• • Installation: Before installation, wipe the socket side and the outer side of the spigot clean with a dry cloth to ensure there is no oil or impurities. If oil stains are present, wipe them clean with acetone. Ensure the joint is sealed to prevent leaks.

  • Maintenance: Regularly check the sealing of the joint and handle any leaks promptly. Avoid long-term use in over-temperature or over-pressure environments to extend the service life.