| 摘要 |
This invention relates to a high-strength low-carbon electric resistance welded (ERW) grade tube being formed of a base metal composition comprising essentially of about 0.04 - 0.06% C, about 0.5 - 0.7% Mn, about 0.01- 0.1 1% Si, upto 0.02% P, about 0.002 - 0.02% S; and microalloying elements not less than 0.02% to increase the yield strength of said tube. |
