Threaded Reducer
What is a Threaded Reducer?
A Threaded Reducer is a pipe fitting that joins two pipes of different diameters, enabling a smooth transition in a threaded piping system. These reducers feature internal threads on both ends and are used in space-restricted or maintenance-heavy systems where welding is not feasible.
They are widely used in plumbing, HVAC, oil & gas, petrochemical, and compressed air systems, and are available in concentric and eccentric designs based on flow alignment requirements.
Key Features
- Threaded Reduction – Enables smooth diameter transitions in piping systems.
- No-Weld Installation – Perfect for quick upgrades or maintenance.
- Leak-Resistant Sealing – Secure threaded connections ensure tight joints.
- Design Variants – Offered in concentric and eccentric types.
- Pressure-Rated – Suitable for Class 2000 to 6000 applications.
Types of Threaded Reducers
- Concentric Reducer
- Eccentric Reducer
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ⅛" x ¼" to 4" x 2" |
| Thread Standards | NPT, BSP, BSPT, ISO Metric |
| Pressure Ratings | Class 2000 / 3000 / 6000 |
| Material Options | Carbon Steel, SS 304 / 316, Duplex, Alloy Steel |
| Standards | ASME B16.11, MSS-SP-95, BS 3799 |
| Manufacturing | Forged, Machined, Thread Rolled |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 700 MPa |
| Yield Strength | 250 – 450 MPa |
| Elongation | 20% – 30% |
| Hardness | 125 – 250 HB |
| Temperature Range | -46°C to +600°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 18.0 – 20.0 (Stainless Steel) |
| Nickel (Ni) | 8.0 – 10.5 (SS 304/316) |
| Molybdenum (Mo) | 2.0 – 3.0 (for F316 only) |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A105 (CS), A182 F304/F316 (SS) |
| ASME | B16.11 |
| MSS-SP | SP-95 |
| BS | 3799 |
| DIN | 2950, 2975 |
| Reducer Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Concentric Reducer | 1" x ¾" | 10.80 |
| Concentric Reducer | 1½" x 1" | 14.60 |
| Hex Bushing Reducer | 2" x 1¼" | 13.20 |
Applications of Threaded Reducers
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 a reducer and a bushing?
A reducer has a uniform cylindrical profile; a bushing has a stepped shape and is often hex-head.
Do you offer reducers with different thread types on each end?
Yes, we provide custom dual-thread reducers (e.g., BSP x NPT) on request.
Are reducers pressure-rated for critical systems?
Yes, we offer Class 3000 and 6000-rated reducers for high-pressure operations.
Can I get reducers with corrosion protection?
Absolutely. Zinc-plated, PTFE-coated, and epoxy-coated reducers are available.
