Cov duab khoom Raws li kev siv sib txawv, nws tuaj yeem muab faib ua: txias forming steel, structural steel, automobile structural steel, corrosion-resistant structural steel, mechanical structural steel, welded gas cylinder thiab siab nkoj steel, pipeline steel, thiab lwm yam. siab zog, zoo toughness, yooj yim ua thiab zoo weldability thiab lwm yam zoo heev zog, kub nruam dov steel ntawv cov khoom yog lug siv nyob rau hauv ships, tsheb, txuas hniav, kev tsim kho, mach ...