Cov pa roj carbon steel phaj yog hom qis carbon steel phaj, nws yog mos heev, yooj yim rau kev ua, A36 carbon structural steel phaj nyob rau hauv kev ua haujlwm siab, siab ua haujlwm ntev, thiab tus nqi pheej yig heev yog cov khoom siv kub-kuav los tiag. nyob rau hauv kev tsim kho kev lag luam.ASTM A36 cov khoom kawg muaj qhov ntxhib saum npoo thiab yooj yim rau tshuab.rau kev ua haujlwm ntxiv.