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Seamless Steel Pipe Applications

The time of issue:2014-5-5 16:00:37       Author:

Recalling the course of nearly a decade of development of China's steel industry, in terms of yield, quality, type, technology and production equipment, our country has reached the world advanced level. In an increasingly competitive environment, iron and steel industry in our country steel pipe market opportunities and challenges. It can be seen that China's seamless steel pipe market, especially the market potential is quite huge.

What is seamless steel pipe? It is a hollow cross section, no seams round, square, rectangular steel. Ingot is made of perforated or solid through the capillary tube, and then hot rolled, cold-rolled or cold call is made. Seamless steel hollow sections, a lot of fluids used for pipeline transportation, steel, etc. Currently , oil casing main importing countries are: Germany, Japan , Romania, the Czech Republic , Italy, Britain , Austria, Switzerland , the United States , Argentina, Singapore also imports. Imported American Petroleum Institute standard multi- reference standard API5A, 5AX, 5AC. Grade is H-40, J-55, N-80, P-110, C-75, C-95 and the like. Specifications are mainly 139.77.72R-2, 177.89.19R-2, 244.58.94R-2, 244.510.03R-2, and 244.511.05R-2 and so on.

Casing is a kind of seamless steel tubes, is also important when equipment used in oil drilling, its main equipment also includes a drill, core and casing pipe, drill collars and drilling small diameter steel pipe and so on. Domestic steel casing drilling through geological hot-rolled or cold-drawn steel, steel with “geology " (DZ) , said common grade steel casing has DZ40, DZ55, DZ753 species. Press SY/T6194-96 “Casing " division, with short sleeves and threaded couplings and long thread casing and coupling two kinds.

And API steel pipe belongs to the American Petroleum standard line pipe, line pipe out of the ground is the oil, gas, water, and transport to the oil and gas industry enterprises through pipeline. Line pipe including seamless pipe and welded steel pipe, the pipe end with flat end, with threaded end and socket end; Its connection way as the end of welding, coupling connection, socket connection, etc. From the domestic steel capacity expansion situation, the domestic steel market in recent years, driven by strong growth in demand on the enthusiasm of the new steel projects of domestic enterprises, domestic steel production annual growth rate of more than 20% of the basic.

As an economic cross-section steel, seamless steel tubes have a very important role in the national economy, is widely used in petroleum, chemical, boilers, power plants, ships, machinery manufacturing, automotive, aviation, aerospace, energy, geology, construction and military and other departments. Compared to the alloy steel pipe and round steel solid steel bending torsion strength phase at the same time, the weight is lighter. Ring with a steel pipe manufacturing parts, can improve material utilization, simplify the manufacturing process, saving material and machining time, such as bearing rings, jack sets, has been widely used to manufacture steel. Steel pipe or a variety of conventional weapons indispensable material, gun barrels to make steel. Steel pipe cross-section of different shapes can be divided into tube and shaped tubes. As in the perimeter of equal conditions, the largest area of a circle with a circular tube can carry more fluid. In addition, the circular cross section to withstand internal or external radial pressure, the force is uniform, so the vast majority of the pipe is pipe.


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