Quality standard of Q390GJD-Z25 steel plate:
According to the provisions of the national standard GB/T 19879, the surface of Q390GJD-Z25 steel plate has obvious local defects such as roughness, scratch and indentation, and it is allowed to carry out grinding and cleaning, but its depth cannot be greater than half of the thickness tolerance.
The packaging, identification and quality certificate of Q390GJD-Z25 steel plate shall comply with all provisions of GB/T 247.
Summary and conclusion of Q390GJD-Z25 steel plate:
As a structural steel plate for high-rise buildings, it needs to have good seismic performance, and its corrosion resistance is also a challenge. The overall performance of Q390GJD-Z25 steel plate is moderate in the structural steel plate for high-rise buildings, which can be used to manufacture some large structures such as high-rise buildings and airport stations.
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