A jẹ olupese pataki ati olupese ti awọn pipes irin Galvanized tabi awọn Falopiani ti o ni ibatan pẹlu awọn yara ti o ni ibatan, awọn iwiregbe galvanized, ti a fi silẹ, ni ilodi si awọn iwiregbe).
Boṣewa:ASTM A53, ASTM A106, E10255, E10219, En1026, Ni ọdun 3444, DIN 3444
Awọn onipò:A53, A106 GR.A, Gr.b, S235, S275, S355, A36, A365, Q195, Q295, Q235, Q235, Q235, Q235, Q235, Q235, Q235