SMS Union in standard and custom sizes to SMS 1145. Compare quotes from verified suppliers on MetalMitra, with MTC 3.1 and worldwide delivery.
- SMS Union
- SS 304 / 316L
- Ra ≤ 0.8 µm
- 3-A / DIN / SMS / ISO
- Tri-Clamp
- Electropolished
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Specifications
| Standard | SMS 1145 |
|---|---|
| Parts | Male, Nut, Liner, Gasket |
| Standards | 3-A, ASME BPE, DIN 11850 / 11851 / 11852 / 11853, SMS 3008 / 1145, ISO 2037 / 2852, IDF / ISO 2853, BS 4825 |
| Size | 1/2" to 6" OD (12.7 mm – 152.4 mm) / DN10 – DN150 |
| Material | SS 304, SS 304L, SS 316, SS 316L |
| Internal Finish | Ra ≤ 0.8 µm, Ra ≤ 0.5 µm, Electropolished on request |
| External Finish | Mirror / Satin polish |
| Ends | Weld End, Tri-Clamp (TC), SMS / DIN / RJT / IDF Union |
Need a dependable stainless steel fitting? SMS Union on MetalMitra comes in standard and custom sizes to SMS 1145, ready for changes in direction, branching and size transitions.
An SMS union is a Swedish-standard sanitary union with male part, nut and liner, widely used in dairy and food plants.
Dairy (sanitary) fittings are stainless steel fittings with smooth, polished internal surfaces and crevice-free joints that can be cleaned in place (CIP). They are used in dairy, food, beverage, brewery, pharmaceutical and cosmetic plants where hygiene is critical.
Available forms & variants
- Bends & Elbows — 45°, 90° and 180° sanitary bends.
- Tees & Crosses — Equal, reducing and short-outlet tees and crosses.
- Reducers — Concentric and eccentric sanitary reducers.
- Clamps, Ferrules & Unions — Tri-Clamp ferrules, clamps, SMS / DIN / RJT / IDF unions.
Performance highlights
- SMS Standard — As per SMS 1145.
- Screwed Union — Round thread nut for easy dismantling.
- Hygienic Finish — Polished bores that keep product from building up.
- CIP Friendly — Crevice-free geometry made for CIP systems.
SMS Union Material & Grades
| Material | Grades / Specifications |
|---|---|
| Stainless Steel 304 / 304L | AISI 304 / 304L (1.4301 / 1.4307) for general food and dairy service |
| Stainless Steel 316 / 316L | AISI 316 / 316L (1.4401 / 1.4404) for pharma, CIP chemicals and salt-bearing products |
| Gaskets (for clamp & union fittings) | EPDM, Silicone, Viton (FKM), PTFE – FDA compliant |
Typical applications
- Dairy Plants
- Food Processing
- Beverages & Juices
- Breweries & Distilleries
- Pharmaceutical
- Biotechnology
- Cosmetics
- Water Purification
- Confectionery
- Edible Oil Plants
- CIP Systems
- Process Skids
Quality checks & certification
Every lot of SMS Union sourced through MetalMitra can be inspected and documented to the governing standard and your purchase order.
- Dimensional inspection
- Internal surface roughness (Ra) measurement
- Visual inspection of polish and welds
- Material grade verification (PMI)
- Pressure / leak testing as applicable
- EN 10204 3.1 Mill Test Certificate
- Cleaned, sealed and bagged packing
Why buy through 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.
Ready to buy?
Send your size, grade, quantity and delivery location for SMS Union, and matching suppliers on MetalMitra will come back with offers.
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
- Dairy Plants
- Food Processing
- Beverages & Juices
- Breweries & Distilleries
- Pharmaceutical
- Biotechnology
- Cosmetics
- Water Purification
- Confectionery
- Edible Oil Plants
- CIP Systems
- Process Skids
- Water & Wastewater
- Pharmaceutical
- Food & Dairy
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
Need SMS Union?
Share grade, size, quantity and delivery location. We compare suitable suppliers and come back with a clear quotation.
