任何井队人员都不能在带压力的情况下松紧由壬或其他管线的连接。
All rig personnel should not attempt to tighten or loosen unions or other connections of pipe under pressure.
任何井队人员都不能在带压力的情形下松紧由壬或其他管线的连接。
All rig personnel should not energy to tighten or loosen unions or other connections of pipe under pressure.
它是个上端为钻杆母扣或者由壬，下端为套管公扣，内空心的转换接头。
Its upper end is drill pipe box or union, the nether end is casing pin. It is a crossover with hollow inside.
罐体连接采用气胎由壬加玻璃钢管，具有安装便捷、美观、密封可靠等优点；
The tank bodys are connected by pneumatic tyre unions and glass steel tubes, so they have the advantages of fine-looking, installation easily, reliable seel, and so on.
防喷管包括一个紧配合的橡胶或筒式防喷器，以防止流体散失并可用快速装卸由壬连接在一起。
The lubricator contains a tight-fitting rubber or bag preventer that prevents fluid loss and is held together with quick union.
防喷管包括一个紧配合的橡胶或筒式防喷器，以防止流体散失并可用快速装卸由壬连接在一起。
The lubricator contains a tight-fitting rubber or bag preventer that prevents fluid loss and is held together with quick union.
应用推荐