Cov hlau tsis tshua muaj hlau: Q345, Q390, Q420, Q460, Q500, Q550, A572GR65, A572GR55, SS400, SM400, SM490, SM570, SS490 High-strength steel: Q6090 WH0, Q9 G60, HG70 , HG785, HG980, WQ590, BHT80 Hnav-resistant steel: (W) NM360, NM400, WNM400E, NM450, NM500, MN13 boiler thiab con...
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