$10
Cemented carbide inserts for mining and oil-field bits
全国有色金属标准化技术委员会
本标准规定了矿山、油田钻头用硬质合金齿的要求、检验规则、试验方法、标志、包装、运输、贮存及订货单(或合同)内容。
本标准适用于矿山掘进和石油开采使用的牙轮钻头、潜孔钻头等用的硬质合金钻齿毛坯。
This standard is the original Chinese electronic standard.
If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
After you successfully purchase, we will send the electronic version of this standard to your email address