Stainless Steel Pipes 201/304/304L/316/316L/321/309/310/32750/32760/904L A312 A269 A790 A789 溶接継目無管 アルミ管・ステンレス鋼管
Stainless Steel Pipes GOST Seamless Pipe Black Carbon Steel ASTM A36 A106 St52 St37 16mn Scm440 Scm 420 Ss440 API K52 X56 X52 Gr. B A53 Sch40 Sch80 Seamless Steel Tube Ss Welded Tube