... heat exchange and decoration. We manufacture the welded stainless steel tubes and pipes meeting the ASTM A249/A269, A270 ... 2) Process method: Cold drawn, Pickling, Polishing, Annealing, Inner bead Removed, Inner Pplishing, TIG welded, Plasma Arc Welded.3) Standards: ASTM ... and Label5) Applied field: Decoration, Heat-Exchanger, Condenser Tubes, Sanitation, food industry , Petroleum and Gas Industry and ...