The present invention discloses a manufacture method for a composite layer of a complexalloysteel pipe, a fastening element, and a protective grating.
本发明公开了一种多元合金钢管、紧固件、防护栏复合层的制作方法。
2
Simple body panels made from light alloy and a chassis fabricated from off-cuts avoid the use of rationed steel and the need for complex and expensive press tools.
由轻合金制成的简单车身面板与非正常尺寸的底盘设计避免了使用配给钢材和复杂而昂贵的压制工具。
3
The morphology of multiphase complex structure in low alloy structural steel and its tensile property were studied.