Lub qhov rooj hluav taws steel yog tsim los ntawm steel ncej thiab lub qhov rooj steel nplooj. Cov qauv hlau tuaj yeem ua kom ntseeg tau tias nws tsis raug cuam tshuam rau kev cuam tshuam deformation thiab kev puas tsuaj rau sab nraud, thiab tuaj yeem siv tau ntev ntev yam tsis muaj kev hloov pauv.

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