Terms for subject Drilling containing 头表

Chinese	English
套管头表压力	casing head pressure
瑞典产表镶金刚石钻头	diamy
表镶金刚石钻头	diamond-set bit
钻杆接头表面敷硬质合金环形硬化层	hard banding of tool joint
钻杆接头表面环形硬化层	hard facing of tool joint
钻杆接头因冷热骤变而在其外表产生的细裂纹	heat-checking