High-strength high-frequency electric resistance welding pipe and manufacturing method thereof
The invention discloses a high-strength high-frequency electric resistance welding pipe, which contains Fe and inevitable impurities, and further contains the following chemical elements in percentage by mass: 0.060 to 0.085 percent of C, 0.10 to 0.30 percent of Si, 1.60 to 1.85 percent of Mn, 0.01...
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Format: | Patent |
Sprache: | chi ; eng |
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