Need a crane card
No power source, you can manually homework
This bearing carvalho mainly used in belt to press assignments and big, prepare the downhole operation, with preventing fall effect, tubing in his lower any position can be adjusted by carvalho stuck fast, and will not drop, the operation way than the past need in setting up to hang card in play crane-vehicle saving time, reduce labor intensity. This product is characterized by its light weight, during the process of working, only one hang card can, do not need two hang card without pressure, repeatedly uninterrupted or hydraulic source conditions, can realize artificially homework.
Accord with API standard
The main technique parameters: