
Pipe Reducer
Concentric Reducer
Concentric reducer is a butt-weld pipe fitting with a symmetrical conical structure that connects pipes of different diameters on the same centerline, achieving gradual diameter transition for fluid, gas and steam pipelines.
- Category
- Pipe Reducer
- Specification
- ASME B16.9
- Product code
- CR-001
Product details
Concentric Reducer
Concentric reducer is a butt-weld pipe fitting with a symmetrical conical structure. It connects two pipes of different diameters while keeping the same centerline, achieving gradual diameter transition for fluid, gas and steam pipelines.

The concentric reducer is a commonly used butt-welded pipe fitting with a coaxial tapered profile. It links pipelines of different nominal sizes on the same centerline, realizing a gentle change of flow cross-section. It is mainly applied to vertical pipelines, gas, steam and clean medium delivery systems.
Advantages
- Symmetrical inner bore ensures steady fluid movement, reduces eddy current and pressure drop, and lowers pipeline erosion risk.
- Centered axis simplifies centering and welding work during site installation, improving construction efficiency.
- Balanced force bearing structure, reliable for high-pressure and high-temperature working conditions.
- Multiple material options: carbon steel, stainless steel, alloy steel, duplex steel etc. Custom sizes and surface treatment are supported.
- Strictly manufactured in accordance with ASME B16.9, ASTM and other international standards, with full mill test certificates available.
- Wide adaptability for oil and gas, petrochemical, power generation, seawater desalination, metallurgy and HVAC industries.