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Precision casting method for graphite mould-ceramic core titanium alloy
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Process for casting thick and large nodular cast iron valve plate
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Grain refining casting method for high manganese steel casting
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Direct quenching and tempering process of SPV490 steel plate
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Copper door and window casting technology
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9ni steel rolling technology
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Postweld normalizing method for gas-pressure welding of steel rails
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Super-long deep hole machining method for 4145H drill collar steel
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