40mm-130mm
Yes
1-3 Years
DIN, JIS, GB, BS, ASTM, AISI, ISO9001
Sound Insulation, Drainage, Protect, Support
Lower Structure
Main Beam
0.3mm
5.8m/PCS(Customisable)
40-130mm
Galvanized
PC Strand Grouting Work
JNFLEX
Stardard Export Package
70x20mm, 90x20mm
Changzhou; Jiangsu; China
72119000
Product Description
Bridge Galvanized Metal Corrugated Pipe Post Tension Duct for Construction 45mm - A vital component engineered for maximum durability and strength, designed to seamlessly integrate into construction frameworks, ensuring top-tier performance.
Specifications: - Explore the detailed specifications that guarantee the utmost efficiency and adaptability in various construction applications.
Category: | Round and flat |
Dimension: | 40-130mm |
Application: | It's mainly used as the prestressed concrete structure, such as the large span railway and highway, bridge, crane girders, rock-soil anchoring engineering, multi-floor industrial plant, coal, sports venues, etc. |
Packing: | With 5.8 meter loaded in 20ft Container or 11.8 meter per piece loaded in 40GP or 40HQ Container. |
Deliery time: | Nomally within 20days after receiving the deposit or the copy of L/C at sight. |
Length | Available upon request |
corrugated round pipe | ID(mm) | 45 | 50 | 55 | 60 | 70 | 80 | 85 | 95 | 105 | 115 | 120 | 130 |
OD(mm) | 50 | 55 | 60 | 65 | 75 | 85 | 90 | 100 | 100 | 120 | 125 | 135 |
Basic Info. - Gain insights into the foundational aspects that make our corrugated ducts a preferred choice in the industry.
Diameter | 40mm-130mm | Thickness | 0.3mm |
Trademark | JNFLEX | Length | 5.8m/PCS(Customisable) |
Origin | changzhou, China | Transport Package | Stardard Export Package |
Surface Treatment | black and galvanized | Product to Be Used for | PC Strand Grouting Work |
HS Code | 72119000 | Production Capacity | 3000 Meters/ Per Day |
Application | Construction Agriculture Infrastructure Industrial Usage | Exporting Package: | With 5.8 meter loaded in 20ft Container |
Corrugated Metal Duct Round (0.3mm thick) - This meticulously crafted duct ensures superior strength and endurance, designed to withstand the demands of rigorous construction environments.

Corrugated Duct is an essential duct former designed for diverse precast and cast-in-situ concrete applications. Crafted from semi-rigid, hot-dipped galvanized metal, this duct is robust and enduring when integrated into concrete. It can be effortlessly secured alongside reinforcing steel, offering unmatched flexibility. Available in sizes ranging from 40mm to 130mm, it is also customizable to meet specific length and diameter requirements. This versatile solution is ideal for post-tensioning ducts and precast connections, ensuring reliability in all construction endeavors.
THE KEY BENEFITS AND FEATURES FOR CORRUGATED DUCTS - Unveil the distinct advantages and innovative features that our prestigious corrugated ducts offer, ensuring excellence in every project.
1. Comprehensive diameter options available, from ID 40mm to ID 130mm, to suit various project needs - Providing a diverse range of sizes to meet a multitude of construction demands.
2. Tailored production to align with specific site requirements, ensuring seamless integration - Our custom solutions guarantee perfect harmony with your unique project specifications.
3. Streamlined benchmarking for efficient production scheduling and execution - Ensuring optimal coordination and precision in every phase of your construction process.
4. Customer-centric design - Bendable and easily cut to meet customer specifications - Designed with flexibility in mind to cater to individual project needs with ease.
5. Ease of site placement: Built tough and durable for long-lasting performance - Engineered to withstand harsh conditions while maintaining impeccable performance.
6. Enhanced corrosion protection with a robust hot dip zinc coating - Offering superior protection against corrosion, ensuring longevity and reliability.








JNFLEX (CHANGZHOU) CO., LTD is strategically situated in the vibrant city of Changzhou, Jiangsu Province, China. Since our inception in 1995, we have excelled in delivering innovative and flexible connection and protection solutions across various industries such as construction, automotive, high-speed rail, and steel metallurgy. Our commitment to quality is reflected in our ISO 9001 and IATF 16949 certifications, alongside the prestigious European Conformity (CE) certification.
Our state-of-the-art 20,000-square-meter facility encompasses a spacious 18,000 square meters of dedicated factory space, employing over 120 skilled professionals.We proudly maintain enduring partnerships with Fortune 500 companies and extend our reach to Europe, Southeast Asia, Australia, South America, Africa, and beyond.We are committed to ensuring customer satisfaction and are eager to host visitors for cooperative ventures and fruitful business discussions.





Customer feedback - Your feedback is invaluable to us and drives our commitment to continuous improvement and excellence.


Certifications - Our prestigious certifications are a testament to our dedication to quality and excellence, assuring our clients of our superior standards.


Partnerships - We forge strong, lasting partnerships that extend globally, reflecting our reputation and commitment to excellence in every collaboration.




Q1: Can you supply stocks? Can you deal small orders?
A1: Yes, we can.Small orders can also be accepted.
A2: Yes, we can offer samples free of charge. But the express cost should be on buyer's account.
Q3: Do you make the duct in-house?
A3: Yes, we have our own factory so the ducts are produced by our own workers.
Q4: Weight of duct per meter?
A4: The weight of duct per meter is 0.57kg.
Q5: Which port do you send from?
A5: Normally we ship from Shanghai harbour.