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Seamless Steel Tubes, Hot Stretch Reduction Mill Pipe (pipe Seamless), The Difference Between A Straight Seam Steel Pipe
Jul 27, 2016

The seamless steel tubes market competition is becoming increasingly fierce, due to the limit of its production process, seamless steel pipe production costs have been high, resulting in the economic decline. With the technological progress of China's metallurgical industry, instead of the seamless steel tube new products are beginning to emerge, so the targets can achieve seamless you bring new products? And what's the essential difference between them? Following two confusing products on the market, hot stretch reduction mill steel pipe and welded points out the difference between.

1, directly determines the quality of the weld seam quality of welded pipe is also welded and seamless tubes where the biggest difference. Welded at high frequency welding, set carbon cannot be eliminated in a straight seam weld just link together with the mother, and not completely fused into one, giving time and test of high voltage. Hot stretch reduction mill pipe high frequency welded to over 800 degrees after the overall heating, combined with simulated annealing and open, after this series of process, weld with the same parent organization's performance has completely fused into one, a very well done from the seam to a seamless transition.

2, the process is different cause differences in product quality, hot stretch reduction mill pipe high frequency welded or welded together without online clearing operations------inside and outside burrs. Burr's presence will affect the flow of the fluid, Burr blocks the normal flow of fluid, resulting in a whirlpool. According to the principles of fluid mechanics, welding local compression increases force uniform pipe greatly reduced the risk of hot stretch reduction mill steel pipe production process is fully taken into account in the risk of Burr, Burr removal limits, making it uniform thickness, no difference in appearance and seamless. So from this point of view, hot stretch reduction mill pipe completed from sewing to a seamless transition.

Of course, the difference between the two is not confined to the above two points, but enough straight seam welded pipe and hot stretch reduction mill pipe there is a big difference. Which straight seam welded pipe has been cleared on the basis of internal and external Burr, heating, and a series of new technologies as a whole, so that it has a qualitative leap forward, can be used generally in the area of high pressure, and longitudinal welded pipe can only be limited to low-pressure environment of gas transportation. Although some of the seamless steel tube, hot stretch reduction mill steel, welded in the fuzzy State of awareness of the three, but I believe that with the passage of time, practice shows that people will correctly understand the hot stretch reduction mill steel, a unique product, with its increasing role in the seamless steel tubes market, in order to create greater economic benefits!