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Quick-replaceable lower module and mould
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Forging and pressing die
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Ring-rolling blank making combined mold for automobile transmission gear
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Dual gear forging die and dual gear forging method using same
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Forging and forming process of complex circular forged piece in specific metal flow line
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Process for ring rolling deep spigot type complex ring-shaped forged piece
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Method for treating quenching arc-shaped cracks of carbon steel thin-wall ring part
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