Concentric Reducer in standard and custom sizes to ASME B16.9. Compare quotes from verified suppliers on MetalMitra, with MTC 3.1 and worldwide delivery.
- Concentric Reducer
- ASME B16.9
- Seamless
- Welded
- SCH 5S – XXS
- 1/2" – 48" NB
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Specifications
| Type | Concentric |
|---|---|
| Size Combination | As per ASME B16.9 |
| Standards | ASME B16.9, ASME B16.25 (bevel ends), ASME B16.28, MSS SP-43, MSS SP-75 |
| Size | 1/2" NB to 48" NB (seamless up to 24" NB) |
| Wall Thickness | SCH 5S, 10S, 20, 30, 40S, STD, 60, 80S, XS, 100, 120, 140, 160, XXS |
| Ends | Bevelled ends as per ASME B16.25 |
Grades & standards
- ASME B16.9
- MSS SP-43
Source Concentric Reducer from verified mills, manufacturers and stockists on MetalMitra. Options span standard and custom sizes, produced to ASME B16.9, and every order can ship with an EN 10204 3.1 certificate.
Through MetalMitra you can source Concentric Reducer in stainless steel, carbon steel, alloy steel, duplex, nickel alloy and other grades, across a broad range of sizes and pressure ratings.
A concentric reducer joins pipes of different diameters on a common centreline, giving a symmetrical cone-shaped transition for vertical lines and pump discharge.
Buttweld fittings are bevelled at the ends and welded directly to the pipe, giving a continuous, leak-resistant joint with a smooth bore and low pressure drop. They are the standard choice for process piping above 2" NB and for high-pressure, high-temperature service.
What you can source
- Elbows — 45°, 90° and 180° long and short radius elbows.
- Tees & Crosses — Equal and reducing tees and crosses.
- Reducers — Concentric and eccentric reducers.
- Stub Ends & Caps — Lap joint stub ends and pipe end caps.
Key properties
- Common Centreline — Symmetrical size transition.
- Vertical Lines — Preferred for vertical runs and discharge lines.
- Smooth Flow — Butt-welded joints for a smooth bore and minimal pressure drop.
- High-Pressure Ready — Rated for high-pressure, high-temperature service.
Concentric Reducer Material & Grades
| Material | Grades / Specifications |
|---|---|
| Stainless Steel | ASTM A403 / ASME SA403 WP304, 304L, 304H, 309, 310S, 316, 316L, 316H, 316Ti, 317L, 321, 347, 904L |
| Duplex & Super Duplex | ASTM A815 UNS S31803, S32205, S32750, S32760 |
| Carbon Steel | ASTM A234 WPB, WPC; ASTM A420 WPL3, WPL6; MSS SP-75 WPHY 42, 46, 52, 56, 60, 65, 70 |
| Alloy Steel | ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
| Nickel Alloys | ASTM B366 – Nickel 200/201, Monel 400, Inconel 600/625, Incoloy 800/825, Hastelloy C276, Alloy 20 |
| Copper Nickel | ASTM B466 / B467 – Cu-Ni 90/10 (C70600), Cu-Ni 70/30 (C71500) |
Applications & industries
- Oil & Gas
- Petrochemical
- Chemical Processing
- Refineries
- Power Generation
- Fertilizer Plants
- Pharmaceutical
- Marine & Offshore
- Water Treatment
- Sugar Industry
- Pulp & Paper
- Heat Exchangers
- Fabrication
- General Engineering
Testing & documentation
Inspection and documentation for Concentric Reducer follow the applicable standard plus any extra requirements in your PO.
- Dimensional inspection as per ASME B16.9
- Wall thickness and bevel inspection
- Visual & surface inspection
- Positive Material Identification (PMI)
- Hydrostatic / NDT as applicable
- EN 10204 3.1 Mill Test Certificate
- Third-party inspection (TPI) on request
Why source on MetalMitra
- Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
- One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
- Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Request pricing
Post an RFQ for Concentric Reducer with your drawing or specification and receive quotes from verified suppliers.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.
Applications & industries
- Oil & Gas
- Petrochemical
- Chemical Processing
- Refineries
- Power Generation
- Fertilizer Plants
- Pharmaceutical
- Marine & Offshore
- Water Treatment
- Sugar Industry
- Pulp & Paper
- Heat Exchangers
- Fabrication
- General Engineering
- Oil & Gas
- Petrochemical & Refining
- Power Generation
- Chemical Processing
- Water & Wastewater
- Marine & Shipbuilding
- Pharmaceutical
- Fertiliser
- Pulp & Paper
- Sugar
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
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