Core of large roller cold upsetting die made of ld steel has more ideal hardness, strength, anti wear capacity and impact toughness.
采用LD钢制造大型滚子冷镦模具的模芯，具有较理想的硬度、强度、耐磨性和冲击韧性。
Core of large roller cold upsetting die made of ld steel has more ideal hardness, strength, anti wear capacity and impact toughness.
采用LD钢制造大型滚子冷镦模具的模芯，具有较理想的硬度、强度、耐磨性和冲击韧性。
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