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Khoom npe Tianjin ERW Pre Galvanized GI Square Steel Yeeb Nkab Tube Lub taub 5 hli 5 * 5-150 * 150 hli Ntsa Thickness 0.3-3.0mm Ntev 0.3m-12m lossis raws li cov neeg siv cov kev xav tau Cov yeeb nkab kawg 1.Plain end2.no burr Nto Galvanized nrog zinc 40-300g / m2 Txheem ASTM A500, BS EN10219, EN10210 GB / T3094, GB6728, JIS G3466-2010 Cov ntaub ntawv Q195, Q235, Q345, GRA GRB, S235JRH, S275JOH, S355JOH, STKR400, SS400 ETC, Lub Chaw Lag Luam Nruab Nrab Sab Hnub Tuaj , North thiab South America, East thiab West Europe, Qab Teb thiab Sout ...