GB/T 13473-1992.Steel hammers- General technical requirements. 4技术要求 4.1 材料 4.1.1钢锤的锤体采用GB699规定的45~6...

GB/T 13473-2008.Steel hammers- General technical requirements. 1范围 GB/T 13473规定了钢锤的技术条件、试验方法、检验规则、包装...