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1500 tons JIS corten steel grade SMA400BP stainless steel plate to Tunisia in 2017
1500 tons JIS corten steel grade SMA400BP stainless steel plate to Tunisia in 2017
- Comments: C45 steel heat treatment: Quenching has low hardenability, and it is easy to cause uneven hardness of the drill rod during heat treatment, resulting in deformation or even cracking. The hardness after quenching is about 42 degrees, which is much lower tha
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