6 Pieces 1.5 Inch Sanitary Fitting Cap Stainless Steel 304 Sanitary End Cap Pipe Fitting Clamp Solid End Caps Blind Tri Caps Clamp for Dairy Products Food Wine Beverage Cosmetics Engineering: Amazon.com:
Food-Grade Stainless Steel Sanitary Tubing and Piping
Some stainless steel dairy tube I ran at a dairy factory in New Zealand last week : r/Welding