Stainless Steel Sanitary Check Valves Welded and Clamp 1. Material: Stainless Steel 2. Check Valves:Welded and ... a professional organizer and one-stop-shop supplier for stainless steel tubes, pipe fittings, flanges, valves and stud ... stainless steel materials, but also super duplex steel (S32750,S32760, etc.), special austenite stainless 310H, 347H, 317L, ... SpecificationStainless Steel Sanitary ...