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Invention patent of rotary disc flange automatic welding equipment
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Invention patent for radial vibration centrifugal casting method
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Invention patent of axial vibration centrifugal casting method
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Invention patent for centrifugal production method of bimetallic tube billet
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304L-SA210 bimetal hot rolling tube blank production method invention patent
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Invention patent for thin-wall bimetallic tube centrifugal production method
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Invention patent for furnace tube rotary and intermittent feeding type display frame
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Invention patent for furnace tube welding centering and gas protection device
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Invention patent for a new type of centrifugal casting tube die end cover fixing device
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Horizontal centrifugal casting machine invention patent
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Invention patent for heat-resistant steel and preparation method thereof
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