... manufacturing Structural and Decorative Round & Square Tube ,welded austenitic stainless steel pipes, light gauge stainless steel ... pipe for ordinary piping, welded stainless steel boiler and heat exchanger tubes, welded stainless steel sanitary tubing. ... annealed/pickling04) Material: TP304, TP304L,TP304/304L, TP310/S, TP316,TP316L, TP316/316L,05) Standards: ASTM (ASME) SA/A213/M ASTM(ASME)269 ASTM ...