Standards: SMS1145：SMS 1145 hygienic unions Swedish metric system Tube Application: ISO 2037 stainless steel tubes for the food industry Product Description & Applications: SMS1145 is Swedish standard on union coupling connection of sanitary steel pipes and valves. The couplings are popular in hygienic industries because it is flatly detachable and can be also installed very fast. The weld ends of SMS union coupling is short type. Main Parts: The complete union coupling set consists of：Nut, Male (Thread Male), Liner, Gasket ( Seal Ring ). Each of them are in different types.

1. Male type: long male, short male, expanded male, blind male ( blank male )
2. Seal: o-ring, ring with lip, ring with collar
3. Liner type: long liner, expanded liner, blind liner ( blank liner )
4. Nut: round nut, hexagon nut, blind nut ( blank nut ), blind nut with chain

Material: Nut: Stainless Steel 304 Male: Stainless Steel 304 or 316L Liner: Stainless steel 304 or 316L Seal Ring: EPDM, FPM (Viton), Silicone ( white color or half-transparent ) Union Ends Connection to The Pipe: Weld: weld ends are welded to the pipe Expanding: ends connected to the pipe by expanding Blank or blind: Blind nut, blind male, or blind liner High pressure hose