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Seam-welded air hardenable steel constructions
Seam-welded air hardenable steel constructions
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机译:缝焊空气硬化钢结构
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摘要
The present invention provides seam-welded, air hardenable steel tubes, methods of manufacturing seam-welded air hardenable steel tubes, tube mills for practicing such methods and applications for using seam-welded, air hardenable steel tubing of the present invention.
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