heavy wall drill pipe meaning in English
加重钻杆（厚壁钻杆）
Examples
- Rough and fine cutting , drilling and boring can be conducted for petroleum drill devices such as drill collar , integral heavy wall drill pipe , centralizer as well as other large - sized and super long axis parts with diameter less than 1600mm and length less than 18000mm
在此可以对钻铤、加重钻杆、扶正器等石油钻具和其他直径小于1600毫米、长度小于18000毫米的大型、超长轴类零件进行粗、精车削和钻、镗加工。