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What is steel and different types of steel and steel grades

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What is steel and different types of steel and steel grades

What is steel?

فولاد چیست و انواع مختلف فولاد و گریدهای فولادی

Types of steel

فولاد چیست و انواع مختلف فولاد و گریدهای فولادی

  • What is steel?

  • Types of steel