... . Mainly guards against the cockspur grass, the green bristlegrass, the crabgrass, the goosegrass, annual meadow grass, dentes foxtail, the hard grass ...
... ,reduce the damage.Also,warning light was equipped .2. Interference preventer Equipped with High frequency magnetic leakage suppressor ,which can avoid ...
... to minimum, buit-in high frequnecy stabilizer and flux leakage preventer,preventing electromagnetic wave leaksge from interference with other electronic equipment ...
... sterilization temperature of the material, the instrument control pneumatic backflow preventer reversing, and back to groove to deal with. The use ...
... for quick ram cha The U blowout preventer is designed so that hydraulic pressure opens ... each ram to lift it out of the preventer. Ram opening pressure opens the rams. Following ... bonnets, before the bonnets begin moving toward the preventer body. Thisassures that the rams never obstruct the ... . Hydraulic pressure drawsthe bonnets tightly against the preventer body and the bonnet bolts are reinstalled to ...
... for the pressure test on the casing string and blowout preventer stack. The Testing Cup is mainly used for the pressure ... test on the casing string and blowout preventer stack. All of the oil (gas and water) well has ...
... is a pluging tool used to make casing string and preventer stack pressure test. In every oil, gas or water well ... , it is simple, convenient and reliabe that casing string and preventer stack are made to test pressure by this tool. Tubber ...
... product has caught up the international levels. The inside blowout preventer is the necessary tool assigned by the international Association of ... drilling tools are coming out of hole,the inside blowout preventer is needed,because the drill pipes as much as possible ... shall be put into hole again.The inside blowout preventer in fig.1.is the new developed product which has ...
... used in testing the pressure of casing string and blowout preventer stack in drilling or field.When the oil,air or ... works for primary laying pressure tesitng for casing and blowout preventer stack ,adoption of this tool shall be easy and reliable ...
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