U-bolt yog ntsia liaj qhov rooj hauv seem ntawm tus tsiaj ntawv U nrog ntsia hlau xov ntawm ob qho kawg. Carbon hlau U bolt kom meej meej txhais tau tias cov khoom siv ntawm U ntsia liaj qhov rooj yog carbon hlau.
Cov pa roj carbon steel U ntsia liaj qhov rooj tau siv feem ntau los txhawb cov yeeb nkab yeeb nkab, cov kav dej los ntawm cov kua dej thiab gasses hla. Xws li, cov pa roj carbon steel U-bolts raug ntsuas siv cov yeeb nkab-ua haujlwm engineering hais lus. Cov pa roj carbon steel U-bolt yuav piav qhia los ntawm qhov loj me ntawm cov yeeb nkab nws tau txhawb nqa. Cov carbon steel U-bolt kuj tseem siv los tuav cov hlua khi ua ke.