This is a high-pressure duct that forms ribs between the flanges, significantly improving strength. It is used for cylindrical formwork in civil engineering and construction.
It has a high resistance to external pressure. The spiral hub and ribs serve as reinforcement. We also manufacture specified dimensions according to conditions such as on-site and transportation.
Inquire About This Product
basic information
This is a wind duct made by spirally wrapping steel plates with a machine. * Can be manufactured with a nominal diameter pitch of 25mm from φ200 to φ600. * Can be manufactured with a nominal diameter pitch of 50mm from φ600 to φ1600.
Price range
Delivery Time
※Please contact us.
Applications/Examples of results
● For general civil engineering foundations ● For road sign foundations ● For utility pole foundations ● For elevated bridge reinforcement
catalog（1）
Download All Catalogs
Company information
Since its establishment, we have sold product materials including duct manufacturing machines, spiral ducts, and insulated flexible ducts. We have one of the largest service networks in the industry with 35 locations domestically and internationally. Since 2000, we have proposed improvements in on-site work with new materials such as "FEF," an insulation material, and new methods like "Patchin Lock." In 2020, we developed the industry's first fiber laser cutting machine. We are also progressing in collaboration with BIM to realize CAD/CAM. In 2022, we sold "air curtains" (manufactured by FRICO in Sweden), which hold a 60% share of the global market.