What are the requirements for lifting sub site use？

1 During loading, unloading, handling, transportation and up and down the drill floor, the protective wire shall be worn to avoid thread damage.
  2 Before use, remove the thread protector, clean and check whether the thread and shoulder sealing surface are in good condition, and check whether the water hole is unobstructed.  
  3 Before making up, the internal and external threads and shoulder surface shall be evenly coated with thread grease, which shall meet the requirements of SY / T 5198 thread grease for drilling tools. Make up operation should be gentle to avoid wrong make-up or damage to sealing surface. Make up torque is the same as that of the drilling tool connected with it.