1. Material: Ordinary carbon structural steel (Q goho simba), high-quality carbon structural simbi (ine avhareji kabhoni mass chikamu chikamu 20/10000), alloy structural simbi (ine avhareji manganese mass chikamu anenge 2% mu 20Mn2), simbi yakakandwa (ZG230-450 goho kwete pasi pe230...
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