Lus piav qhia luv luv:

Lub npe: Scaffolding kav Standard: BS 1139, EN 39-2001, JIS G3444-2004 STK400/500 Khoom siv: Q195, Q215, Q235, Q345 Specification: 1-1/2 "(OD: 48.3mm) Phab ntsa thickness: 48.6mm 2.0mm-5.0mm Kev kho deg: Kub-dipping galvanized, pre-galvanized