hydraulic tubing tong
... 钻机液压油 drilling machine hydraulic oil 液压油管钳 hydraulic tubing tong 加德士抗磨液压油 Hydraulic Oil AW ...
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液压油管钳扭矩控制阀用于油管和抽油杆上螺纹时控制其扭矩值 ，以免扭矩过大而损坏螺纹或造成本体变形。
The torque control valve of hydraulic tong is developed to protect the scrws of tube and suck rod from being damaged or deformed caused by over tightness.
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