O matou o se tagata gaosi fa'apitoa ma fa'atau atu paipa u'amea po'o paipa, fa'atasi ai ma le tele o mea fa'apipi'i fa'atatau e pei o fa'amau fa'amau, fa'amau fa'amau ma mea fa'apipi'i (buttweld, forged, compression fittings).
Tulaga masani:ASTM A53, ASTM A106, EN10255, EN10219, EN10210, EN39, BS1387, ASTM A500, ASTM A36, API 5L, ISO 65, JIS G3444, JIS3452, DIN DIN 3444, ASTM 3444, DIN 3440
togi:A53, A106 Gr.A, Gr.B, Gr.C, S235, S275, S355, A36, SS400, Q195, Q235, Q345