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