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How to distinguish between ASTM Corten B weatherproof plate and general steel plate steel plate

The naked eye can not distinguish between ASTM Corten B weatherproof plate and general steel plate before the plate going rust. In order to recognize ASTM Corten B weatherproof plate correctly in this stage, there are some methods:

First, we can refer to the ASTM Corten B weatherproof plate MTC with the red seal of the steel mill, which marks the steel grade, technical standard, chemical composition and mechanical properties etc. Information of the provided steel grade.

Second, we can supply  ASTM Corten B weatherproof plate sample to the professional third party inspection agency, and ask them to check whether the metal components match the warranty.

The methods are applicable to distinguish between ASTM Corten B weatherproof plate and general steel plate before the plate going rust. After the plates get rust, the matter will become easy. We only need to observe the rust surface to recognize ASTM Corten B weatherproof plates.

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