PT70-90
Yes
1-3 Year
GB, AISI, ISO
Protect
Lower Structure
Main Beam
0.38-0.4mm
Galvanized
70mm,90mm
Post Tension
5.8m/PCS(Customisable)
PC Strand Grouting Work
JNFLEX
Stardard Export Package
70x20mm, 90x20mm
Changzhou; Jiangsu; China
7306900090
Product Description
90mm Pre-Stressed Galvanised Steel Corrugated Pipe For Post Tensioning
Category: | Round and flat |
Dimension: | Flat size 70x20-90x20mm |
Application: | Post-tensioning pre-stressed concrete construction and infrastructure projects, such as bridges, viaducts, multi-story industrial building, dam, mine etc. |
Packing: | 1.in bundles, 2.with containers, 3.standard seaworthy exported packaging or as the customer's request. |
Deliery time: | Nomally within 20days after receiving the deposit or the copy of L/C at sight. |
Most popular size: | 70*20mm,90*20mm |
Basic Info.
Model NO. | 70x20mm,90x20mm | Thickness : | 0.38-0.4mm |
Dia. | 70mm,90mm | Length : | 5.8m/PCS(Customisable) |
Application : | Post Tension | Trademark : | JNFLEX |
Origin : | changzhou, China | Transport Package : | Stardard Export Package |
Surface Treatment : | Galvanized | Product to Be Used for : | PC Strand Grouting Work |
HS Code : | 72119000 | Production Capacity : | 3000 Meter/Meters Per Day |
Galvanized Post tension Flat duct(0.38mm-0.4mm thick)

Post tension Flat duct is used as a duct former for a variety of precast and cast-in-situ concrete work. The semi-rigid hot dipped galvanized metal duct is strong and durable for casting into concrete and is easily tied into position adjacent to reinforcing steel. Corrugated Duct can be used for post tensioning ducts and precast connections.




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JNFLEX (CHANGZHOU) CO., LTD is located in Changzhou City, Jiangsu Province, China. Established in 1995, we specialize in providing flexible connection and protection solutions for various industries including construction, automotive, high-speed rail, steel metallurgy, and more. With ISO 9001 and IATF 16949 certifications, as well as European Conformity (CE) certification, we ensure high product quality.
Our 20,000-square-meter facility, with 18,000 square meters of factory space, houses over 120 employees. We maintain long-term partnerships with Fortune 500 companies and export to Europe, Southeast Asia, Australia, South America, Africa, and other regions.We prioritize customer satisfaction and welcome visitors for cooperation and business discussions.





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Q1: Can you supply stocks? Can you deal small orders?
A1: Yes, we can.Small orders can also be accepted.
Q2: Do you provide samples ? is it free or extra ?
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.
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.