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High-Strength-690(mpa)
  • S690QL1

    A High Yield Strength steel for welded and weight – saving structures Bozhong 690QL1 is a high strength quenched and tempered steel dedicated for...

  • S690QL

    A High Yield Strength steel for welded and weight – saving structures Bozhong 690QL is a high strength quenched and tempered steel dedicated for ...

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