Product Name: Carbon Steel Concentric Reducer
Type: Butt-weld fitting, concentric design (same centerline)
Material: Carbon steel, commonly ASTM A234 WPB / WPC
Standards: Manufactured to ASME B16.9 (butt-weld dimensions), sometimes MSS-SP-75, ISO, DIN / JIS
Size Range: Typically from ½″ (DN15) up to 48″ or higher, depending on factory capacity
Wall Thickness / Schedule: From SCH 5 S, SCH10 / 10S, SCH40, SCH80, up to SCH160 / XXS etc.
Surface Finish: Black primer, anti-rust oil, sand blasting, or galvanized as required
Applications: Oil & gas, chemical, power, water treatment, metallurgy, boiler systems
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Product Description
Imagine a pipeline system where two pipes of very different diameters must be joined seamlessly, without disrupting flow, pressure, or alignment. The Carbon Steel Concentric Reducer is precisely engineered for this: it smoothly transitions between large and small diameters while keeping their centerlines perfectly aligned.
Constructed from high-quality carbon steel (typically ASTM A234 WPB / WPC), this reducer offers robust mechanical strength and excellent weldability. The butt-weld ends enable a secure, leak-tight joint, reducing turbulence and minimizing risk of erosion. Whether under high temperature, high pressure, or cyclic loading, the reducer helps maintain system integrity and fluid efficiency.
The exterior surface can be treated with black primer, rust-preventive oil, or galvanization to resist corrosion during transport or in industrial environments. Internally, the reducer provides a smooth conical bore, minimizing flow disturbance and ensuring stable pressure behavior.
This reducer is particularly valuable in vertical piping applications (e.g., risers), pump suction lines, or any system requiring a reliable size transition without offsetting the pipe’s centerline.
Smooth Flow Transition
The concentric design keeps the centerline aligned, avoiding abrupt changes that cause turbulence. This helps preserve flow stability, reduces pressure drop, and mitigates cavitation in critical systems.
High Structural Integrity
Made from ASTM-grade carbon steel (e.g., A234 WPB), the reducer resists high pressure and provides excellent mechanical strength, suitable for demanding industrial environments.
Leak-Free Weld Joint
Butt-weld ends allow for full-penetration welding, giving a strong, permanent connection that minimizes risk of leakage or mechanical failure.
Flexible Size & Schedule Options
Available in a wide range of sizes (e.g. ½″–48″ or larger) and wall thicknesses (SCH5S–SCH160 / XXS), enabling customization to your specific project demands.
Corrosion-Resistant Coating
Exterior surface can be coated with black primer, anti-rust oil, or galvanized treatment to protect during storage, transport, and installation.
Standards Compliant
Manufactured to widely recognized specifications such as ASME B16.9, ensuring compatibility and quality conformity.
Wide Applicability
Ideal for pipelines in oil, chemical, power, boiler, and water industries. Many manufacturers (e.g., PipesTec) supply such reducers from ½″ up to very large diameters.
Type | pipe fitting reducer |
Size | Seamless reducer:1/2"~24" DN15~DN600 |
Wall thickness | sch5s,sch10,sch20,sch30, sch40s,std, sch40,sch60,sch80s,XS,sch80, sch100, sch120,sch140, sch160, XXS. |
Standards | ASME B16.9-2007 |
Material | Carbon steel: ASTM/ASME A234 WPB,WPC Super duplex stainless steel: UNS S31803-UNS S32750 |
Surface treatment | Transparent oil, rust-proof black oil or hot galvanized |
Packing | wooden case, pallet or as customers’ requirement |
Applications | Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc |
Min order | 1 piece |
Certification | API, CCS and ISO9001:2000 |
Expert Manufacturing：Our factory specializes in high-precision carbon steel fittings, with decades of experience producing butt-weld concentric reducers to internationally recognized standards.
Quality Assurance：We provide Mill Test Reports (MTR) for every batch, ensuring traceability and material provenance.
Customization Capabilities：We support custom size ranges, non-standard schedules, and tailored wall thickness engineering to meet your design.
Reliable Delivery：Well-managed inventory and efficient production lines help us deliver on-time, even for large-volume orders.
Surface Protection Options：We can supply products with black primer, rust-prevent oil, or galvanization per your project requirements.
Technical Support：Our engineering team offers guidance on reducer selection, welding procedures, and application design—helping you avoid costly mistakes.
Q1: What material specification do you use?
A: We typically manufacture our concentric reducers from ASTM A234 WPB / WPC carbon steel, which offers reliable strength and good weldability.
Q2: What size ranges are available?
A: Sizes from ½″ (DN15) up to 48″ (DN1200) or larger are available, depending on your order. This matches common industry ranges.
Q3: What wall thicknesses (schedules) do you support?
A: We offer a broad variety of schedules, from SCH 5S, SCH10 / 10S, SCH40, SCH80, up to SCH160 or XXS, based on structural and flow requirements.
Q4: What standards do your reducers comply with?
A: We conform to ASME B16.9 for buttweld dimensions. Certificates and inspection documents are available on request (e.g., MTR, ISO).
Q5: Can I have a custom reducer (non-standard size or schedule)?
A: Yes — we welcome custom orders. Our R&D / engineering team can collaborate with you to produce reducers that precisely meet your specifications.
Q6: What surface finishes are offered?
A: We offer black primer, anti-rust oil, sand blasting, and galvanized finishes to protect your reducers during transport and installation.
Q7: How are the products packaged and delivered?
A: We package reducers in wooden crates or on pallets, ensuring safe shipping. Delivery times depend on quantity and customization, but we strive for fast turnaround and reliable logistics.
