Butt weld elbows (45°, 90°, or 180°) are used to change direction in high-pressure or high-temperature piping systems, o...
Inquire1. Brief Introduction of Products:
A sanitary butt weld concentric reducer connects two stainless steel tubes of different diameters on the same centerline, primarily used to smoothly reduce pipe size while preventing contamination in hygienic, food, dairy, and pharmaceutical processing lines. It ensures balanced flow, minimizes turbulence, and is ideal for vertical piping or pump discharge applications. Key Characteristics:
1. Material: Usually made from food-grade stainless steel (304 or 316L).
2. Finish: Often polished on the ID (Inside Diameter) and OD (Outside Diameter) to prevent bacteria entrapment.
3. Alignment: Maintains a consistent centerline for both pipes.
Sanitary butt weld concentric reducers provide a hygienic, leak-proof transition between different pipe sizes in high-purity systems. Their key advantages include a polished, crevice-free, and corrosion-resistant construction (304/316L) that prevents bacteria buildup and supports CIP (Clean-in-Place) cleaning, often exceeding 3A standards for food, dairy, and pharmaceutical industries.
2. Technical Specification:

3A Standards
Size | AxB | L1 | T |
1"-3/4" | 25.4x19 | 25.4 | 1.65x1.65 |
1 1/2"-3/4" | 38.1x19 | 76.2 | 1.65x1.65 |
1 1/2"-1" | 38.1x25.4 | 50.8 | 1.65x1.65 |
2"-1" | 50.8x25.4 | 101.6 | 1.65x1.65 |
2"-1 1/2" | 50.8x38.1 | 50.8 | 1.65x1.65 |
2 1/2"-1" | 63.5x25.4 | 152.4 | 1.65x1.65 |
2 1/2"-1 1/2" | 63.5x38.1 | 101.6 | 1.65x1.65 |
2 1/2"-2" | 63.5x50.8 | 50.8 | 1.65x1.65 |
3"-1" | 76.2x25.4 | 203.2 | 1.65x1.65 |
3"-1 1/2" | 76.2x38.1 | 152.4 | 1.65x1.65 |
3"-2" | 76.2x50.8 | 101.6 | 1.65x1.65 |
3"-2 1/2" | 76.2x63.5 | 50.8 | 1.65x1.65 |
4"-1 1/2" | 101.6x38.1 | 254 | 2.11x1.65 |
4"-2" | 101.6x50.8 | 203.2 | 2.11x1.65 |
4"-2 1/2" | 101.6x63.5 | 152.4 | 2.11x1.65 |
4"-3" | 101.6x76.2 | 101.6 | 2.11x1.65 |
6"-3" | 152.4x76.2 | 140 | 2.77x1.65 |
6"-4" | 152.4x101.6 | 140 | 2.77x2.11 |
This product are also available in DIN, ISO/IDF, SMS, BSP standards. Please feel free to contact us if you need it in other standards!
3. Key Applications and Use Cases:
•Vertical Pipeline Systems: Concentric reducers are specifically used in vertical piping, where maintaining a centered flow (axial symmetry) is required.
•Fluid & Gas Transportation: They are essential for transitioning pipe sizes while minimizing turbulence and pressure drops in both liquid and gas handling systems.
•High-Pressure/Industrial Piping: Used extensively in sectors requiring robust, leak-proof, and permanent connections, such as:
(1) Oil & Gas Pipelines: Transporting oil, gas, and petroleum products.
(2) Petrochemical Plants: Handling chemicals, acids, and high-temperature fluids.
(3) Power Generation: Used in steam and water lines.
(4) Water Treatment & Processing: Involving high-flow, high-pressure environments.
•Sanitary Process Piping: Used in food and beverage industries for connecting sanitary stainless steel tubes where a cone-shaped, weld-end transition is needed.
•Pump & Valve Connections: Often used to connect larger diameter piping to the smaller inlet/outlet of pumps, compressors, and valves.
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