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Hot rolled anti corrosion structural steel plate B460NQR B490NQR B480GNQR B600GNQR Q400NGR1
Q450NQR1|Q450NQR1 STEEL PLATE Q450NQR1 is a weather resistant steel created by alloying cop
Hot rolled anti corrosion structural steel plate B460NQR B490NQR B480GNQR B600GNQR Q400NGR1 Q450NGR1 Q500NGR1 Q
Q450NQR1|Q450NQR1 STEEL PLATE Q450NQR1 is a weather resistant steel created by alloying copper, chromium and ni