The length of the section steel
the standard length of the train rail is 12.5m and 25m.
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The flange of H-shaped steel is parallel or nearly parallel on the inside and outside, and the end of the flange is at a right Angle, so the limitation of the I···
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It is mainly used to make carbon structural steel for engineering structural parts.
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The content of sulfur, phosphorus and other nonmetallic inclusions in high quality carbon structural steel is lower than that in ordinary carbon structural stee···
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