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Small diameter, mm
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Carbon Steel
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Rolled metal pipe
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Seamless pipes
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Stainless Butt Weld Reducer EN 10253-4 / DIN 2605
Products: 12
- Metal rolling
- Stainless steel
- Stainless steel transition
At UTMK, you can order Stainless Butt Weld Reducers designed for high-integrity connections between different pipe diameters. Manufactured from certified AISI 304/304L steel, these fittings ensure a smooth, leak-proof flow transition in critical systems. We provide full material traceability and technical documentation, supporting your supply chain's compliance and ESG goals.
Technical Specifications
Parameter |
Value |
|---|---|
Fitting Type |
Concentric Reducer, Butt Weld |
Material Grade |
AISI 304 / 304L (1.4301 / 1.4307) |
Manufacturing Standard |
EN 10253-4 (Type A), DIN 2605, GOST 17378-01 |
Diameter Range (D1/D2), mm |
21/16 to 159/133 (as per assortment) |
Wall Thickness (S), mm |
1.5 - 4.0 |
Service |
Water, steam, food products, chemicals, gases |
Benefits of Stainless Butt Weld Reducers
- Superior Corrosion Resistance: AISI 304/304L grade ensures long-term durability and hygiene, essential for food, pharma, and chemical applications.
- Certified Quality: All reducers conform to EN 10253-4 and ISO standards, ensuring full technical compliance and system integrity.
- Total Supply Chain Reliability: UTMK provides robust stock levels and full documentation (e.g., 3.1 certs), reducing risk and ensuring your project timelines are met.
- Hygienic Design: The smooth, crevice-free butt-weld connection is easy to clean (CIP/SIP) and prevents microbial contamination.
- Project Versatility: Ideal for complex industrial piping and sophisticated DIY projects, from custom automotive exhausts to home brewing setups.
Application Areas
- Food & Beverage Processing (Standards: EN 10357, DIN 11850, (EC) 1935/2004).
- Pharmaceutical & Bioprocessing (Standards: ASME BPE, EN 10253-4).
- Chemical processing and water treatment plants.
- Architectural metalwork and structural design.
- Custom exhaust fabrication for automotive and marine use.
- Homebrewing and food-safe DIY projects.
Buy EN 10253-4 Compliant Stainless Reducers
Review the available dimensions and prices for Stainless Butt Weld Reducers in the catalog above. Our products are certified to international standards, ensuring they meet your technical specifications. Contact our sales team to place an order or confirm stock availability.
UTMK ensures smooth flow transitions within your ISO-compliant supply chain. To build a complete piping system, integrate our reducers with high-quality Matte / Satin Finish Stainless Pipe. We supply all essential fittings for complex layouts, including Stainless Butt Weld Elbow (90°/45°) for directional changes and Stainless Butt Weld Tee (Equal/Reducing) for branching. For non-corrosive environments, consider our standard carbon Pipe Reducer as a cost-effective alternative.
Need Technical Consultation for Your Project?
If your application requires specific material certifications, advanced processing (like cutting or bending), or ESG compliance data, our technical experts are here to help. UTMK is more than a supplier; we are a partner in mitigating project risk. Contact us to discuss your requirements and receive a detailed quote.
Weight per pc / Quantity per 1 ton of Stainless Butt Weld Reducer
Diameters (D1/D2), mm |
Wall thickness (S), mm |
Weight of 1 piece, kg (theoretical) |
Quantity in 1 ton, pcs. |
21 / 16 |
~2,0 |
0,04 |
25000 |
25 / 16 |
~2,0 |
0,05 |
20000 |
25 / 21 |
~2,0 |
0,05 |
20000 |
28 / 16 |
~2,0 |
0,06 |
16667 |
28 / 21 |
~2,0 |
0,05 |
20000 |
32 / 21 |
~2,0 |
0,08 |
12500 |
32 / 28 |
~2,0 |
0,08 |
12500 |
38 / 21 |
~2,0 |
0,09 |
11111 |
38 / 28 |
~2,0 |
0,08 |
12500 |
38 / 32 |
~2,0 |
0,07 |
14286 |
42 / 21 |
~2,0 |
0,09 |
11111 |
42 / 28 |
~2,0 |
0,12 |
8333 |
42 / 32 |
~2,0 |
0,1 |
10000 |
42 / 38 |
~2,0 |
0,08 |
12500 |
45 / 28 |
~2,0 |
0,13 |
7692 |
45 / 32 |
~2,0 |
0,12 |
8333 |
45 / 38 |
~2,0 |
0,1 |
10000 |
45 / 42 |
~2,0 |
0,07 |
14286 |
48 / 32 |
~2,0 |
0,13 |
7692 |
48 / 38 |
~2,0 |
0,12 |
8333 |
48 / 42 |
~2,0 |
0,14 |
7143 |
51 / 25 |
~2,0 |
0,16 |
6250 |
51 / 32 |
~2,0 |
0,15 |
6667 |
51 / 38 |
~2,0 |
0,13 |
7692 |
51 / 42 |
~2,0 |
0,12 |
8333 |
57 / 25 |
~2,0 |
0,19 |
5263 |
57 / 28 |
~2,0 |
0,18 |
5556 |
57 / 32 |
~2,0 |
0,17 |
5882 |
57 / 38 |
~2,0 |
0,16 |
6250 |
57 / 42 |
~2,0 |
0,15 |
6667 |
57 / 48 |
~2,0 |
0,13 |
7692 |
57 / 51 |
~2,0 |
0,11 |
9091 |
60 / 28 |
~2,0 |
0,28 |
3571 |
60 / 32 |
~2,0 |
0,25 |
4000 |
60 / 38 |
~2,0 |
0,24 |
4167 |
60 / 42 |
~2,0 |
0,24 |
4167 |
60 / 48 |
~2,0 |
0,23 |
4348 |
76 / 42 |
~2,0 |
0,34 |
2941 |
76 / 45 |
~2,0 |
0,34 |
2941 |
76 / 48 |
~2,0 |
0,34 |
2941 |
76 / 57 |
~2,0 |
0,32 |
3125 |
76 / 60 |
~2,0 |
0,36 |
2778 |
89 / 48 |
~2,0 |
0,44 |
2273 |
89 / 57 |
~2,0 |
0,43 |
2326 |
89 / 60 |
~2,0 |
0,42 |
2381 |
89 / 76 |
~2,0 |
0,4 |
2500 |
108 / 57 |
~2,0 |
0,65 |
1538 |
108 / 60 |
~2,0 |
0,64 |
1563 |
108 / 76 |
~2,0 |
0,6 |
1667 |
108 / 89 |
~2,0 |
0,55 |
1818 |
114 / 60 |
~2,0 |
0,8 |
1250 |
114 / 76 |
~2,0 |
0,75 |
1333 |
114 / 89 |
~2,0 |
0,71 |
1408 |
114 / 108 |
~2,0 |
0,6 |
1667 |
133 / 89 |
~2,0 |
0,9 |
1111 |
133 / 108 |
~2,0 |
0,81 |
1235 |
133 / 114 |
~2,0 |
1,01 |
990 |
159 / 133 |
~2,0 |
1,15 |
870 |
What is the difference between a concentric and eccentric reducer?
A concentric reducer is cone-shaped and joins pipes on the same axis, ideal for vertical runs. An eccentric reducer has one flat side, keeping one side of the pipes aligned, which is used in horizontal runs to prevent pooling or air traps.
Why choose AISI 304L over 304?
The 'L' stands for 'Low Carbon'. 304L has better weldability and is more resistant to intergranular corrosion at the weld joint, making it the preferred choice for welded fittings.
Are these reducers suitable for high-pressure applications?
Yes, when the wall thickness matches the pipe schedule and the weld is performed correctly, these butt weld fittings are designed to maintain the full pressure rating of the pipeline.
What does EN 10253-4 Type A mean?
This standard specifies the dimensions, tolerances, and technical requirements for butt-welding fittings, including reducers, made from austenitic stainless steels. 'Type A' defines a specific dimensional standard.
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