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Product Advantage
◆◆ The seismic flexible ventilation duct has the following features:
1. Extremely flexible, with a bending radius that can be as low as 0.5 - 3 times the outer diameter, capable of adapting to significant structural deformation, and has outstanding seismic performance, ensuring the connectivity of the ventilation system during disasters.
2.remely lightweight (70% - 80% lighter than metal pipes of the same specification), with minimal impact on the load of the building structure, which can reduce the pressure of the building's load-bearing capacity.
3. Possesses certain fire resistance (the fiberglass cloth model can achieve Grade A fire resistance standards), suitable building fire ventilation requirements, and has high safety.
4. Easy to install, can be quickly connected through zippers and flanges, suitable for the layout of ventilation pipelines in building spaces, and has high construction efficiency.
With a moderate temperature resistance range (-30℃ - 250℃), it can adapt to most civil and industrial scenarios without the need for additional temperature control measures.
Technical Parameters

Product Uses
◆◆ Anti-seismic flexible ventilation duct application scenarios:
1. Civil buildings: mechanical smoke exhaust systems for high-rise buildings, supply and return ducts for central air conditioning in shopping malls / hotels; purification ventilation ducts for operating rooms in hospitals, electronic clean rooms (silicone fabric material, easy to clean)
2. Industrial buildings: ventilation and air exchange ducts for factory buildings, boiler smoke exhaust ducts (need to be matched with fireproof layer); underground garage exhaust ductsadapt to underground structure displacement).
3. Special scenarios: ventilation ducts for temporary emergency shelters (light and easy to install); sectional ventilation ducts for subways.
Product Operate Guide
◆◆ Anti-seismic flexible ventilation duct installation method:
1. Preliminary preparation: Select the pipe diameter according to the ventilation volume, that the wind speed meets the specifications (the wind speed of civil ventilation should not exceed 8m/s); check whether the pipe material meets the fire protection requirements (such as need to use A-level fireproof material for high-rise buildings), and there is no rust on the built-in steel wire skeleton.
2. Installation steps: flange connection or zipper connection (canvas material), the flange connection needs to be sealed with sealing tape to prevent air leakage; the suspended support of the pipeline needs to flexible lifting ropes (such as steel wire rope spring shock absorber), to avoid rigid connection affecting the anti-seismic effect; a guide plate needs to be set at turning point to reduce wind resistance and noise; for long-distance pipelines, an expansion joint is set every 10 - 15 meters, to compensate for temperature deformation.
3. Precautions: Avoid excessive stretching of the pipeline during installation, to prevent material tearing; regularly (every six months) clean the inner wall of the pipeline, especially the kitchen exhaust pipeline, to prevent the accumulation of oil stains from causing a fire; in high humidity environment, it is necessary to wrap a moisture-proof layer on the outside of the pipeline prevent the inner wall from dew and mildew.
FAQ
1. What are your main products?
Our main products include: Anti-Seismic Flexible Pipelines;Bridge Bearings;Bridge Expansion Joints ;Sealants ; Waterstops
2. Can you provide customized products?
Absolutely! We offer tailored solutions based on your project’s specific requirements, covering everything from material selection (such as NBR, EPDM, and more) to structural design. All custom orders come with detailed technical drawings and professional installation guides to ensure seamless implementation.
3. What certifications does your company possess?
We hold ISO certifications for quality, environmental, and occupational health management systems, ensuring strict compliance with GB/T 17955-2019 and other national standards.
4. Do you offer installation support?
Yes, we provide after-sales support, including remote video guidance for installation.