Concentric and Eccentric Steel Pipe Reducers
Specification
| Parameter | Range / Options |
| Size Range | ½" – 48" (DN15 – DN1200) |
| Wall Thickness | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS |
| Length | ASME B16.9 standard dimensions |
Material Standard
| Material Type | Standard | Common Grades |
| Carbon Steel | ASTM A234 | WPB, WPC, WPL6 |
| Stainless Steel | ASTM A403 | WP304/L, WP316/L, WP321, WP347 |
| Alloy Steel | ASTM A234 | WP11, WP22, WP91 |
| Duplex / Super Duplex | ASTM A815 | UNS S31803, S32205, S32750 |
End Connections
● Butt Weld Ends: Beveled ends for welding directly to pipe
● Socket Weld Ends: For smaller diameters, typically ½" – 4"
● Threaded Ends: NPT or BSPT threads for screwed connections
Applications
Pipeline Transitions – Reducers are essential where pipelines change diameter to accommodate varying flow requirements, connect to different equipment, or transition between main lines and branch lines.
Pump Suction and Discharge – Concentric reducers are often installed on pump suction lines in vertical orientation to prevent cavitation, while eccentric reducers are used on horizontal suction lines to avoid air pockets.
Pressure Vessel and Tank Connections – Reducers facilitate connections between large vessel nozzles and smaller process piping, ensuring proper fit-up and flow characteristics.
Compressor Stations – In gas transmission systems, reducers accommodate size changes between compressor discharge piping and main transmission lines.
Chemical Processing Plants – Reducers allow for transitions between reactors, heat exchangers, and storage tanks where pipe sizes vary based on process requirements.
Water Treatment Facilities – Used extensively in filtration systems, pump stations, and distribution networks where pipe diameters change to match hydraulic requirements.
Power Generation – Steam and cooling water systems utilize reducers to connect boilers, turbines, and auxiliary equipment with different connection sizes.
Fire Protection Systems – Reducers connect main supply lines to branch lines and sprinkler system components where diameter reductions are necessary.
Marine and Offshore – Shipboard piping systems employ reducers in fuel, ballast, and cooling water lines where space constraints require size transitions.
HVAC Systems – Chilled water and hot water distribution networks use reducers to connect chillers, boilers, and air handling units to main piping loops.