Today total 1350 tons heavy thickness Q345A+N finshed rolled and passed mill’s final inspections of all techincals.The two main techinals including chemical composition and mechanical property were complied to specification GB/T 713 requirements.Additional heat treatment Normalized is for guarantee heavy steel properties,normally we suggest customers adding Normalized heat treatment for carbon steel plates if thickness above 60mm,such as Q345B,Q345D,S355JR,A572Gr50,ST52-3,A709Gr50,for boiler plates if thickness above 40mm,such as steel grades ASTM A516GR60,A516GR70,Q345R,Q245R,A515Gr60,A515Gr70.The thickness of this rolling Q345A is 300mm which ordered by Xinsteel’s Pakistan customer.

In GB/T1591,there are four grades of Q345,they are Q345A,Q345B,Q345C and Q345D,the main difference of these steel grades is the impacting temperature.

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