CDC Damper Tubes

CDC Damper Tubes

Precision tubular components for CDC (Continuous Damping Control) dampers in automotive suspension applications

CDC damper tubes are used in suspension systems with Continuous Damping Control, where oil flow is adjusted electronically during driving. The design of tubes such as the intermediate, reservoir, and related damper tubes directly affects how quickly the damper responds and how consistent its performance remains over time.

The intermediate tube sits between the reservoir tube and the piston tube, forming separate oil chambers and guiding hydraulic flow during damping adjustment. Through this internal tube structure, pressure changes and oil distribution are controlled in a stable and predictable way, allowing the damper to react smoothly under different driving conditions. The buffering features of the intermediate tube and the pressure regulation handled by the reservoir tube support this behavior, while proper sealing and suitable material selection are important to ensure long-term durability.

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Automotive Chassis Parts

Hydroformed subframe tubes help reduce vehicle weight by forming the structure as a single piece, which cuts down the number of parts and weld points. Variable cross-section hydroforming allows tube diameter and wall thickness to be optimized where loads are higher, achieving more than 20% weight reduction while maintaining strength and stiffness. As a result, vehicle energy consumption and emissions are reduced, while chassis performance remains unchanged.

After forming, high-strength steel tubes are usually protected with electrophoretic coating. Zinc phosphating is often applied as well, helping the coating bond better to the surface. For applications that require corrosion protection, hot-dip galvanizing can also be used to provide long-lasting durability.

Hydroformed frame components significantly reduce fatigue stress by cutting the number of weld joints by more than 60%, which helps avoid stress concentration at critical points. Shot peening is then applied to strengthen the material surface and improve fatigue resistance. With the extra stiffness gained from hydroforming, the structure handles repeated loads more easily, which helps extend fatigue life by around 25–30% and keeps the frame reliable even when working under heavy loads or on rough terrain.