News

Points for workers' technical operations: 1. Parameter setting: Set the test pressure value and voltage stabilization time according to the specifications of the petroleum pipe to be tested, the steel...

1. Outer diameter tolerance ERW steel pipe: It is cold-formed and sizing is completed by reducing the diameter by 0.6%. The process temperature is basically constant at room temperature. Therefore, th...

Different types of casing pipe used in oil extraction: Surface oil casing protects the well from being contaminated by shallow water and shallow gas layers, supports wellhead equipment and maintains t...

Hot rolling and cold rolling are forming steel or steel plates, and they have a great influence on the structure and properties of steel. The rolling of steel is mainly hot rolling, and cold rolling i...

Oil casing pipe is a steel pipe used to support the wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. According to the ...

Thick-walled seamless steel tube is a common type of thick-walled seamless steel tube. It is a special material of thick-walled steel pipe. For thick-walled seamless steel pipe, it is more important t...

The changes in the names of ERW and HFW change with the development of technology and the update of standards. First of all, the equipment for high-frequency resistance welding steel pipes is produce...

The oil layer casing is the production casing, and the tail pipe technology is only one kind of cementing technology. It is a method of hanging the casing on the upper casing only by the open hole sec...

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...