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Patent for Pipe Joint Invention

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Multi-station pipe fitting semi-automatic molding machine invention patent

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Patent for invention of card convex pipe connector

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Elbow pipe fittings automatic flat machine invention patent

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Automatic steel pipe air tightness

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Thin-walled stainless steel non-convex ring self-locking seal

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Non-convex ring self-locking seal for thin-walled stainless steel pipe

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Multi-station pipe fitting semi-automatic forming machine

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High strength tensile mechanical crimping type pipe joint patent

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Joint Bellows Patent

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Tensile Elastic Spin Ring Patent

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Gas special union patent

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Patent of O-ring for Thin-wall Crimped Metal Fittings

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PATENT PLUGGING FITTING WITH WARNING DEVICE

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Anti-vibration groove connector patent for pipeline

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Patent of inner-expansion stainless steel pipe fitting socket shaping device

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Automatic stainless steel pipe high pressure water pressure testing machine patent

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Automatic steel pipe air tightness detection device patent

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The patent of the material separation device of the automatic steel pipe air tightness detection machine.

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Patent of Material Bearing Device of Automatic Steel Pipe Air Tightness Detecting Machine

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Double cone double card metal pipe connector patent

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Elbow pipe fittings automatic flat head machine patent

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Patent of new press-fit metal pipe fittings

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Direct thermal sleeve patent

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Self-sealing special-shaped sealing ring patent

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Automatic rolling groove shaper patent

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Patent of inner lining clamping composite pipe connector

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Extrusion type press metal pipe connector patent

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Fitting flat head machine patent

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Stainless steel pipe heating sleeve patent

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Warm sleeve (90 degree elbow) patent

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Seismic Groove Patent

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Three-way warm sleeve patent

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Warm sleeve (45 degree elbow) patent

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