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Lifting Sub Supplier
lifting sub oilfield manufacturer and supplier in China,send email contact us to get lifting sub oilfield price list.lifting sub oilfield for sale
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.
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