GB/T 2975-2018钢及钢产品力学性能试验取样位置及试样制备国家标准
英文:Steel and steel products—Location and preparation of samples and test pieces for mechanical testing GB/T 2975-2018介绍:...
英文:Steel and steel products—Location and preparation of samples and test pieces for mechanical testing GB/T 2975-2018介绍:...