Cart:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 25672-2021 |
Hammer drill bit and shell hammer drill bit 电锤钻和套式电锤钻 |
China National Standards Hammer drill bit |
 English PDF |
| GB/T 13344-2010 |
Downhole drill hammers and bits 潜孔冲击器和潜孔钻头 |
China National Standards Hammer drill bit |
English PDF |
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