Cov pa roj carbon steel kav yuav tsum tau ua los ntawm cov hlau castings los yog cov hlau puag ncig los ntawm perforation, thiab ces kub dov, txias dov los yog txias-draw. Carbon steel yeeb nkab plays lub luag haujlwm tseem ceeb hauv Tuam Tshoj txoj kev lag luam seamless steel yeeb nkab. Cov ntaub ntawv tseem ceeb yog Q235, 20 #, 35 #, 45 #, 16Mn. Qhov tseem ceeb tshaj plaws ...
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