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  • GBT 13314-2008-Chinese-General Specifications of Forged Steel Work Rolls for Cold Rolling

  • GBT 1299-2000-Chinese-Alloy Tool Steels

  • GBT 908-2008-Chinese-Forged Bars Dimensions-Shape-Weight and Tolerances

  • GBT 709-2019-Chinese-Dimension-Shape-Weight and Tolerance for Hot-rolled Steel S

  • GBT 702-2008-T-Chinese-Hot-rolled Steel Bars Dimensions Shape Weight and Tolerances

  • GBT 699-1999-Chinese-Quality Carbon Structural Steels

  • GBT 229-2007-Chinese-Metallic Materials-Charpy Pendulum Impact Test Method

  • GBT 228.1-2010-Chinese-Metallic Materials—Tensile Testing Part-1 Method of Test

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