... Process method: Cold drawn, Pickling, Polishing, Annealing, Inner bead Removed, Inner Pplishing, TIG welded, Plasma Arc Welded.3) Standards: ... and Label5) Applied field: Decoration, Heat-Exchanger, Condenser Tubes, Sanitation, food industry , Petroleum and Gas Industry and ... to customers' requests. ASTM A312 Welded and Inner Bead Removed Stainless Steel Pipes, Tubes and Tubings for Liquid Delivery