Yearly Archives: 2022

The factors that affect the passivation coating of seamless steel pipes mainly include the following four points: The passive film of seamless steel pipes is a suppressed metastable structure in therm...

Casing pipe drilling refers to the use of casing instead of drill pipe to apply torque and weight on the drill bit to achieve bit rotation and drilling. Drill pipes, drill collars, etc. are no longer ...

API is the abbreviation of American Petroleum Institute. API was established in 1919 and was the first national-level business association in the United States. An important task of API is to be respo...

Different connection methods have different application fields due to their different production principles, but in general they all have one thing in common that is easy to install, firm and reliable...

Seamless steel pipes are made of steel ingots or solid tube billets through perforation and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipes have a hollow section and are u...

Petroleum seamless steel pipes are mainly used for oil and gas well drilling and oil and gas transportation. It includes oil drilling pipes, oil casing pipes, and pumping pipes. Oil drill pipe is main...

In the anti-corrosion construction of oil and gas pipelines, straight seam steel pipes are often used. The surface treatment of this welded pipe is one of the key factors that determine the anti-corro...

Precision seamless pipe is a kind of high-precision steel pipe material processed by cold drawing or hot rolling. Because the inner and outer walls of precision steel pipe have no oxide layer, bear hi...

Precision seamless pipes are pided into two types, hot-rolled seamless steel pipes and cold-rolled seamless steel pipes due to their different production processes. Cold-drawn (cold-rolled) tubes are ...

Hot-rolled seamless steel pipe is a kind of round, square and rectangular steel with a hollow section and no joints on the periphery. When the bending and torsion strength is the same, the weight is l...