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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...

Analysis of quality defects on the inner and outer surface of high-precision cold-rolled(cold drawn) seamless steel pipe: Cold rolled seamless steel pipes have the characteristics of no oxide layer on...

Factors affecting the fatigue strength of seamless steel pipe materials: inclusions. The inclusion itself or the hole created by it is equivalent to a tiny gap, which will produce stress concentrat...

Acceptance of ERW,LSAW straight seam steel pipe: 1 The quality inspection and acceptance of straight seam steel pipes shall be carried out by the technical quality supervision department of the suppli...