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Chinese GB steel standards

Chinese GB steel standards

Chinese GB steel standards

(OP)
Hi all,

Recently been looking at using local Chinese steel grades for hot rolled plate for welded structural applications. We are looking at using the Chinese GB T 1591 Q345D grade (min 345 MPa).

The general composition and mechanical property specifications look similar for some steels. However, I am unsure about the quality system requirements - in particular the testing and control of these properties. At the moment we are looking at putting additional test requirements on purchase.

Does anybody have any experience with Chinese structural steel quality?

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