prime quality GB T 18982 prime quality Q345GNHLJ weather proof 2mm steel sheet

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    prime quality GB T 18982 prime quality Q345GNHLJ weather proof 2mm steel sheet

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    Alloy steel EN10083-3 51CrV4 GB/T 3077 12Cr1MoV 20Cr 40Cr 15CrMo 30CrMo 35CrMo 42CrMo. ... GB/T 8162: 20#, 45 ... 2mm 11. Pre-treatment of the steel plate and profile ...
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