![]() |
| |||
normal pipe thread | |||
| |||
American National Pipe Thread |
标准 管 螺纹 : 54 phrases in 11 subjects |
Architecture | 1 |
Automobiles | 4 |
Aviation | 13 |
Drilling | 2 |
Earth sciences | 2 |
General | 8 |
Mechanic engineering | 3 |
Mechanics | 9 |
Metallurgy | 2 |
Oil / petroleum | 2 |
Technology | 8 |