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Cov Khoom Siv Alloy 20CrMnTi 30CrMnTi Hlau Hloov Bar Rau Cov Gears Thiab Cov Khoom Siv Kho Tshuab -
40Mn 40MnB 20Mn2 Alloy Structural Plain Steel Round Rod Rau Hniav Bar -
S55C Cov Khoom Siv Carbon Steel Round Bar Rau Cov Khoom Siv Fasteners -
20Cr 45Cr 40CrB Alloy Structure Steel Round Bar Rau Fasteners Thiab Pins