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Manufacturing method for novel flanging end socket
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Manufacturing method of semi-circular seal head
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Novel O-shaped sealing ring production technology
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Manufacturing technology of novel punched end closure
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Novel steel seal head manufacturing process
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Novel manufacturing process of sealing cap
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Manufacturing method for steel for furnace cap
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Novel flanging manufacturing process
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Novel carbon steel composite material making technology
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Composite U-shaped seal head
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Novel manufacturing method of seal head for air compressor
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Novel mold press seal head manufacturing method
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Method for manufacturing antioxidant sealing ring
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Novel flat-base seal head
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Manufacturing technology of novel corrugated pipe expansion joint
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Technology for producing metal fireproof material
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Compression resistant end socket manufacturing method
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Novel welding process method
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Manufacturing method for high-temperature-resistant end socket
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Technology for producing precision alloy material steel
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