Concentric Reducer
Yunming Metal provides stainless steel concentric reducers for smooth pipe size transitions while maintaining centerline alignment. Available in 304, 316L, and 2205 grades, these butt weld fittings are ideal for fluid pipelines requiring flow stability.
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Product Overview
A concentric reducer is a butt weld fitting used to connect pipes of different diameters while keeping the centerline aligned. Its symmetrical conical shape allows for smooth transition of flow and minimizes turbulence or pressure loss. Concentric reducers are widely applied in horizontal or vertical pipelines where axial alignment is required.
Application Areas
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Oil and gas transmission pipelines
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Petrochemical and chemical processing units
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Water and wastewater treatment facilities
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Marine and offshore pipeline systems
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HVAC and industrial fluid handling
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Power generation and boiler systems
Product Features
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Center-aligned design ensures even flow transition
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Butt weld connection for high-strength piping joints
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Available in both seamless and welded types
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Resistant to corrosion, high temperatures, and pressure
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Manufactured according to ASME B16.9 and other global standards
Technical Specifications
| Parameter | Specification Range |
|---|---|
| NPS (Nominal Pipe Size) | 1/2″ – 48″ |
| Outer Diameter | 21.3 mm – 1219 mm (approx. ¹³⁄₁₆″ – 48″) |
| Wall Thickness | 2 mm – 20 mm (approx. ¹⁄₁₆″ – ¹³⁄₁₆″) |
| Material Grades | 304 / 304L / 316L / 321 / 310S / 2205 / 2507 etc. |
| Connection Type | Butt welded |
| Surface Finish | Sand blasting / Pickling / Sand rolling |
| Standard Compliance | ASME B16.9, EN, DIN, JIS |
| Packaging | Woven bags, wooden crates, or export-standard packaging |
Manufacturing Process
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Raw material selection and quality inspection
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Hot or cold forming to reducer shape
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Precision trimming and beveling
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Heat treatment and surface processing
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Dimensional and pressure testing
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Packaging and labeling
Frequently Asked Questions
Q1: What is the main function of a concentric reducer?
A1: It reduces pipe size while maintaining centerline alignment, ensuring stable flow in horizontal or vertical pipelines.
Q2: What material grades are available?
A2: We offer stainless steel grades including 304, 304L, 316L, 321, 310S, 2205, and 2507.
Q3: Is there a difference between concentric and eccentric reducers?
A3: Yes, concentric reducers align the centerline of both pipes, while eccentric reducers offset one side.
Q4: What sizes do you supply?
A4: Sizes range from 1/2″ to 48″ in various wall thicknesses to meet different project needs.
Q5: Can reducers be customized?
A5: Yes, dimensions, wall thickness, and surface treatments can be tailored according to customer requirements.
Still Have Questions?
Feel free to contact us for more details or to discuss your custom reducer requirements. Our technical support team is ready to assist with specifications, certifications, and delivery.
