GB T 18982 Q345GNHJ anti weathering corrosion 16mm steel plate with shear edges

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    GB T 18982 Q345GNHJ anti weathering corrosion 16mm steel plate with shear edges

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    GB/T 15970.7-2000 Corrosion of metals and alloys ... GB/T 9121.3-2000 Loose plate steel pipe flanges with weld ... GB/T 18593-2001 Anti-corrosive painting ...
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