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Electric fusion welding is the combination of metal and metal by heating one or several consumable electrodes and the workpiece. Electric resistance welding is a welding process that uses a strong cur...

Tubing and casing are both indispensable in oil exploration. Tubing is a pipe that runs into the casing of an oil well during normal production of the oil well. In the spout well, the oil flow flows i...

High frequency resistance welded pipe is a welding method used to heat the resistance generated by the high frequency current flowing through the continuous contact surface of the workpiece, as long a...

The casing is used to strengthen the well wall, and the inner and outer diameters are much larger than the drill rod; the drill rod is used to connect the drill collar and the drill bit, and the lengt...

The epidemic situation of new coronary pneumonia in foreign countries is becoming more and more serious. Affected by the COVID-19 situation, global steel mills have reduced their output of production,...

Disadvantages of hot rolled 20 # straight seam steel pipe: 1. Residual stress caused by uneven cooling. Residual stress is the stress of internal self-phase balance without external force. Hot-rolled ...

ERW steel pipe: high-frequency straight seam resistance welded pipe, using hot-rolled wide coil as the material, through pre-bending, continuous forming, welding, heat treatment, sizing, straightening...

The casing pipe is used to strengthen the well wall, and the inner and outer diameters are much larger than the drill rod; the drill rod is used to connect the drill collar and the drill bit, and the ...

ERW steel pipe is a general name for resistance welded steel pipe. High frequency resistance welding (Electric Resistance Welding, ERW for short) is the first letter of the corresponding English word....

The oil well casing gas is the oil separation gas that is led to the surface through the casing. The oil well is pided into two parts: the tubing and the casing. The tubing is the flow channel that th...