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What should be paid attention to the strength of color coated steel plate?

Common tile type: CQ grade TDC51D, tensile strength ≤500MPa, elongation A80≥22.
Angle tile type: CQ grade TDC51D, yield strength ≥ 320Mpa, tensile strength ≥ 380Mpa, elongation A80≥26;Adopt HSS grade, yield strength ≥280MPa, tensile strength ≥360MPa, elongation A80≥18.

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