Buttweld Reducer
What is a Buttweld Reducer?
A Buttweld Reducer is a pipe fitting used to join two pipes of different diameters, ensuring a smooth transition in diameter and maintaining flow integrity in a pipeline. It helps in avoiding turbulence and pressure loss, making it essential for flow control and volume regulation.
Reducers are available in two main types: Concentric Reducers, which align the centerlines of both pipes, and Eccentric Reducers, which offset the centerlines to prevent air accumulation in horizontal pipe runs. Buttweld reducers are widely used in oil & gas, chemical processing, water systems, and power plants.
Key Features
- Smooth Size Transition – Enables seamless connection between different pipe diameters.
- Concentric & Eccentric – Available in both designs for versatile applications.
- Strong Welded Joints – Provide reliable structural integrity.
- Wall Thickness Compatibility – Fits various pipe schedules and thicknesses.
- Minimized Turbulence – Reduces flow resistance for efficient operation.
Types of Buttweld Reducers
- Concentric Reducer
- Eccentric Reducer
- Custom Reducing Sizes on Request
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ½" x ¼" to 48" x 36" |
| Wall Thickness | SCH 10 to SCH XXS |
| Material Options | Carbon Steel, SS 304/316, Duplex, Alloy Steel |
| Standards | ASME B16.9, MSS-SP-75, DIN 2616 |
| Manufacturing | Seamless / Welded, Hot / Cold Formed |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 750 MPa |
| Yield Strength | 205 – 450 MPa |
| Elongation | ≥ 20% |
| Hardness | 120 – 250 HB |
| Temperature Range | -46°C to +650°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 16.0 – 20.0 |
| Nickel (Ni) | 8.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grades |
|---|---|
| ASTM | A234 WPB (CS), A403 WP304/316 (SS) |
| ASME | B16.9, B16.28 |
| MSS-SP | SP-75 |
| DIN | 2616 |
| EN | EN 10253 |
| Reducer Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Concentric Reducer | 6" x 4" | 180 |
| Eccentric Reducer | 8" x 4" | 220 |
| Concentric Reducer | 10" x 6" | 300 |
Applications of Buttweld Reducer
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the difference between concentric and eccentric reducers?
Concentric reducers align both pipe centers, while eccentric reducers have an offset to prevent accumulation in horizontal lines.
Can reducers be fabricated in custom thicknesses?
Yes, reducers are available in various schedules (SCH 10 to SCH XXS) and can be customized.
Are reducers available in seamless and welded forms?
Both options are available based on pressure and application needs.
What certifications are available?
Reducers can be supplied with EN 10204 3.1/3.2, PED, NACE, and third-party inspection.
