Kaida Corrugated Pipe

Technology

End-to-end quality control ensures the smooth operation of pipelines.

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Causes of insufficient corrugation height, uneven corrugation spacing, and skewed corrugation profile: Insufficient hydraulic forming pressure, mold wear/misalignment, off-center placement of the tube blank, and excessive forming speed

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Increase the forming oil pressure, inspect and replace the corrugation mold, correct the center alignment, and form at a slow, constant speed

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Causes of wave crest cracking and leakage: Substandard raw material quality (high impurity content, excessive hardness), insufficient wall thickness, severe work hardening, and excessive elongation

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Verify material grades (304/316L/S32096), strictly control blank wall thickness, perform annealing before forming, and reduce elongation per wave

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Causes of excessive wall thinning and localized scratches or gouges: rough mold surfaces without lubrication, excessive tightness of the forming die clearance, and burrs on the tube blank surface.

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Polish the molds, apply a specialized lubricant, and pre-grind the outer surface of the tube blank.

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Causes of poor overall concentricity and bending/twisting: Asynchronous multi-point corrugation, tooling positioning errors, and ovality of the tube blank itself.

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Synchronized multi-station forming equipment, calibration of fixture reference points, and rounding of cylinder bodies prior to forming

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How is product quality ensured?

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The company has established a comprehensive quality control system covering the entire process—from raw material procurement and manufacturing to the shipment of finished products. We strictly adhere to relevant national industry standards to ensure that our products are corrosion-resistant, high-pressure-resistant, and resistant to aging, and that they offer excellent sealing performance.
 

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What is the service life of a bellows/expansion joint?

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Service life depends on specific operating conditions (such as the medium, temperature, pressure, and frequency of movement). Under normal operating conditions, the product offers excellent resistance to aging and corrosion, ensuring long-term, stable operation.

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Can you provide custom-made products?

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Yes. We have an experienced R&D team that can provide customized design and technical support during the sales process based on your specific operational requirements.

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What are your company’s main products?

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We specialize in a range of core products, including metal bellows, expansion joints, flexible metal hoses, and rubber flexible connectors. We offer a comprehensive selection of sizes to meet the needs of various operating conditions.

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