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Wenzhou, China
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 Binhai Industrial Park, Longwan District, Wenzhou, China


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Sanitary Stainless Steel SMS Union Coupling


Sanitary stainless steel sms union fitting,  known as Swedish Milk Standard, and now it is widely used at not only dairy, but also beer, food, beverage, cosmetics, pharmaceutial and chemical. One sanitary union consist of a round nut, a male, a liner and a seal.  We can weld the liner, male with elbow, tee, cross etc as well.

SMS (Swedish Metric Standard) Union is designed for use in applications that don’t require regular dismantling and they are not forgiving of tube misalignment, they do however have the advantage of being suitable for removal of adjacent pipe sections without disturbing other joints.  The sanitary union is comprised of a round slotted nut, a weld male end, a liner piece the nut slides over and square section gasket. The nut has round threads.  Normally shown in metric sizes, SMS fittings actually fit up fairly closely with imperial tube OD sizes.

  • Sanitary SMS Round Union

  • Forged material available 304 / 304L/ 316/ 316L grade of stainless part

  • Material available EPDM/SILICON/VITION/BUNA etc of sealing

  • 19/25/32/38/51/63/76/102 or 1"/11/4"/2"/2.5"/3"/4"

There are varible types of welding liner, welding male and blank cap etc. Pls download our cataloge, you can find more information. 

  • Round slotted nut, there are 4 and 6 slots optional

  • SMS union blank nut w/without chain

  • Short welding liner, there are one step and two steps type

  • Long welding liner

  • Expanding liner

  • Blank liner

  • Long/short/expending welding male

sms sanitary union


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