抽油杆拧扣机价格/抽油杆拧扣机供应 液压拧扣机适用于油田井下泵、井下工具、油管、套管及其他螺纹联接件的制造装配与修复拆装，具有以下特点： ?机头与背钳同步夹紧或松开工件。 ?机头与背钳为四行星爪双向夹紧机构，适应范围内不需更换任何零件。 ?根据用户需要选配扭矩自动控制系统。 ?背钳配有液动行走机构，能随工件移动。 hydraulic bucking unit is suitable for the assembly and disassembly of downhole pump, downhole tools, tubing, casing and other thread joint tools. this product has the following features: ?units' head and backup tong clips or loosens simultaneously. ?units' head and backup tong are four planetary claw of bi-direction clipping mechanism. do not change any part in application range. ?torque control system can be provided (optional).. ?the backup tong is equipped with hydraulic walking mechanism which can move with tube. 常规、微牙痕、无牙痕。 接受各类抽油杆、油管、套管、接箍拧接机定制。 盐城特达|||抽油杆拧扣机价格/抽油杆拧扣机供应