Nkọwa dị mkpirikpi:

Ọkọlọtọ: BS 1387-1985, ASTM A53, ASTM A513, ASTM A252-98, JIS G3444-2004 STK400/500, G3452-2004, EN 10219, EN 10255-1996, DIN 10255-1996,0 GB / T13793-2008Ihe: Q195, Q235, Q275, Q345 Nkọwa: 1/2 "-24" (OD: 21.3mm-660mm) Mgbidi mgbidi: 1.0mm-12mm Ngwọta elu: Galvanized, mkpuchi mmanụ, lacquering