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Exhaust Flexible Pipe
YDCT's exhaust flexible pipes are engineered for integration into full exhaust systems where vibration absorption, thermal movement, and connection compensation are critical. These components play a functional role in enhancing system longevity by minimizing stress transmission from the engine to the exhaust line.
Each pipe is constructed using a high-pressure water-forming process, which ensures uniform corrugation and prevents localized stress concentration—a key factor in fatigue resistance under engine cycling loads. Our manufacturing capacity exceeds 350,000 units per month, supporting both OEM and aftermarket production demands.
For buyers managing high-volume procurement or system design, these pipes offer reliability and repeatable quality at industrial scale. They are especially effective in applications requiring flexible connections between rigid exhaust elements—such as catalytic converters, mufflers, or DPFs—and the engine manifold.
We primarily use 304 stainless steel for its excellent balance of strength, corrosion resistance, and heat tolerance in exhaust gas environments. Where specific resistance to chloride, higher sulfur content, or temperature gradients is required, we offer alternative material grades such as 316L or 201, ensuring compatibility across regional standards and use conditions.
The product's performance is closely tied to its internal construction:
Base type includes a standard bellows with outer braid, suited for general vibration damping.
Inner Braid type adds a protective mesh inside the bellows, reducing internal turbulence and improving acoustic insulation.
Interlock type features a spiral-wound inner liner that withstands elevated temperatures and improves structural rigidity—preferred in turbocharged or high-load engines.
Nipple extensions on any of the above types allow for better weldability and secure fitment into exhaust assemblies.
All types are compatible with standard clamping, welding, or flanged integration methods, offering flexibility to system designers and installers.
These flexible exhaust hoses are commonly used in:
Passenger and commercial vehicles: Positioned between the downpipe and mid-section to absorb engine movement
Heavy-duty trucks and buses: To accommodate drivetrain shift and high vibration
Diesel generator exhaust systems: Providing thermal and vibrational compensation
Machinery and industrial piping systems: Where vibration isolation or angular movement is required
During installation, careful alignment is recommended to ensure axial and lateral movement stays within the product's rated limits. The braided outer layer provides burst protection and improves stability under negative pressure or high-velocity exhaust flow.
| Parameter | Value / Option |
|---|---|
| Standard Material | Stainless Steel 304 (optional: 316L, 201) |
| Manufacturing Method | High-pressure water-forming |
| Outer Braid | Single or double stainless braid |
| Pipe Diameter Range | 1.5" to 5" (customizable) |
| Length Range | 4" to 18" standard (custom on request) |
| End Options | Raw ends / flanged / expanded |
| Working Temperature | -40°C to +600°C |
| MOQ | 50 pieces |
| Packaging | Bulk or custom-branded cartons |
Q: Is the product suitable for turbocharged engines?
A: Yes, the structure is designed to handle high heat and engine movement, making it ideal for turbo applications.
Q: What's your typical production time for bulk orders?
A: For standard specifications, we can deliver within 7–15 working days depending on volume.
Q: Can you manufacture with non-standard lengths or diameters?
A: Absolutely. We specialize in customization and can produce according to your drawings or performance specs.
Q: How is this different from traditional rolled flex pipes?
A: Our water-formed pipes ensure more uniform corrugation, better durability, and reduced internal turbulence.
Q: Can I order a sample? Is the quality guaranteed?
A: Absolutely,we provide samples and various test reports,and we will regularly do quantitative exhaust pipe corrosion resistance,anti-torque and other testing experiments,packaging will also do manual screening,all of which is to ensure the quality of each exhaust pipe,even if the exhaust pipe out of the problem,we will return after sale,please rest assured purchase.
Q: Do you have any experience in large volume cooperation？
A: We have large-scale pipeline project cooperation in China,and our customers all over the world,shipments can be fully guaranteed,we also often participate in the international large auto parts machinery exhibition,so whether online or offline,whether production or after-sales,we have quite good experience.
