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The Advantages of High-frequency Straight Seam Welded Steel Pipe
Sources: this site Click: Date: 2016-3-9 17:14:54
Frequency straight seam resistance welded steel pipe is hot-rolled coil after molding machine, the use of high-frequency current skin effect and proximity effect, so that the edge of the tube is heated to melt under pressure welding to achieve the effect of squeezing rollers produced.
Straight seam electric resistance welded pipe and seamless pipe has the following advantages:
A) high dimensional accuracy. Than the diameter welded steel pipe and seamless steel pipe wall thickness variation is much smaller, because the steel rolling and pipe forming easy to control, so the high dimensional accuracy.
B) good mechanical properties. Since the pipe is easy to control with the strip rolling line with the development of welding technology and heat treatment technology, the weld properties can be controlled, so straight seam electric resistance welded steel pipe elongation of 8% -10% higher than seamless steel tubes, which because straight seam welded carbon overcast about 12% lower than seamless.
C) straight seam electric resistance welded steel pipe concentric high, uniform thickness. Weld after heat treatment, microstructure uniformity, with a strong ability to squeeze collapse.
D) since the extension of the steel is good, straight seam welded pipe flattening test electrical sister better than seamless.
E) straight seam resistance welding pipe toughness higher than seamless steel tubes.
F) no straight seam resistance welding pipe welding and other dissimilar metal infiltration, and after a rigorous line heat treatment, so the weld properties consistent with the material properties.
Thus, high-frequency steel pipe will be replaced seamless, become the industry preferred pipe.
Straight seam electric resistance welded pipe and seamless pipe has the following advantages:
A) high dimensional accuracy. Than the diameter welded steel pipe and seamless steel pipe wall thickness variation is much smaller, because the steel rolling and pipe forming easy to control, so the high dimensional accuracy.
B) good mechanical properties. Since the pipe is easy to control with the strip rolling line with the development of welding technology and heat treatment technology, the weld properties can be controlled, so straight seam electric resistance welded steel pipe elongation of 8% -10% higher than seamless steel tubes, which because straight seam welded carbon overcast about 12% lower than seamless.
C) straight seam electric resistance welded steel pipe concentric high, uniform thickness. Weld after heat treatment, microstructure uniformity, with a strong ability to squeeze collapse.
D) since the extension of the steel is good, straight seam welded pipe flattening test electrical sister better than seamless.
E) straight seam resistance welding pipe toughness higher than seamless steel tubes.
F) no straight seam resistance welding pipe welding and other dissimilar metal infiltration, and after a rigorous line heat treatment, so the weld properties consistent with the material properties.
Thus, high-frequency steel pipe will be replaced seamless, become the industry preferred pipe.
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