Butt Weld Concentric Reducer
Butt Weld Concentric Reducer
A Butt Weld Concentric Reducer is a type of pipe fitting used to join pipe sections on the same axis. It allows for a gradual transition in pipe diameter while maintaining the centerline of the pipe. This helps in minimizing turbulence and pressure loss, making it ideal for fluid or gas flow systems.
| Attribute | Description |
|---|---|
| Product Name | Concentric Reducer |
| Type | Pipe Fitting |
| Size Range | 1/2″ to 48″ (custom sizes available upon request) |
| Standard | ASME B16.9, ASTM A234, MSS-SP-75, DIN, EN |
| Material Options | Carbon Steel, Stainless Steel, Alloy Steel |
| Material Grades | Carbon Steel: ASTM A234 WPB, WPC Stainless Steel: ASTM A403 WP304, WP316 Alloy Steel: ASTM A182 F5, F9, F11, F22 |
| Wall Thickness | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS |
| End Type | Beveled End (BE), Plain End (PE) |
| Length | Short Radius (SR) and Long Radius (LR) lengths as per standards |
| Pressure Ratings | Up to 6000 psi |
| Surface Finish | Black Painted, Sandblasted, Anti-Rust Coating, Galvanized |
| Applications | Oil and Gas, Petrochemical, Chemical, Power Plants, Water Treatment, and HVAC Systems |
| Compliance | ISO 9001, PED, NACE MR0175, RoHS, ASTM, ASME |
| Advantages | Provides a centered pipe connection for smooth flow, reduces turbulence and noise, is durable in high-pressure and corrosive environments, customizable for specific projects. |
Concentric Reducer Sizes
| Large End (inches) | Small End (inches) | Wall Thickness (Schedule) | Length (inches) |
|---|---|---|---|
| 3 | 2 | SCH 10, SCH 20, SCH 40 | 6 |
| 4 | 3 | SCH 10, SCH 20, SCH 40, SCH 80 | 6.5 |
| 6 | 4 | SCH 10, SCH 20, SCH 40, SCH 80 | 7.5 |
| 8 | 6 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160 | 8.5 |
| 10 | 8 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160 | 10 |
| 12 | 10 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 11 |
| 14 | 12 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 12 |
| 16 | 14 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 14 |
| 18 | 16 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 15 |
| 20 | 18 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 16 |
| 24 | 20 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 18 |
| 30 | 24 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 20 |
| 36 | 30 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 22 |
| 48 | 36 | SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS | 24 |
Concentric Reducer Types
1. Welded Concentric Reducer
Ends: Bevelled for butt-welding
Standard: ASME B16.9
Use: For permanent, high-strength pipe connections in process pipelines.
2. Seamless Concentric Reducer
Manufacturing: Made from a single piece without welds
Benefit: Higher pressure and corrosion resistance
Size Range: Typically up to 24” NPS
3. Welded (Fabricated) Concentric Reducer
Manufacturing: Rolled and welded from plates
Use: For larger diameters (above 24” NPS)
4. Eccentric vs. Concentric (for comparison)
Concentric: Common centerline (used in vertical piping)
Eccentric: Flat on one side (used in horizontal piping to prevent air pockets)
5. Standard Types Based on Dimensions
Short Radius Concentric Reducer
Compact size, used in tight spaces
Long Radius Concentric Reducer
Smooth flow, better for high-velocity applications
Applications
Oil & gas pipelines
Petrochemical processing
Power generation plants
Water treatment systems
HVAC and fire protection systems