70&90mm High Tension Prestressed Galvanized Steel Metal Duct Post Tension Flat Duct for Bridge Joint

70&90mm High Tension Prestressed Galvanized Steel Metal Duct Post Tension Flat Duct for Bridge Joint. Galvanized Steel Construction: Made from galvanized steel strip with 0.38-0.4mm thickness for durability. Customizable Length: Standard length is 5.8M per piece, fully customizable to meet specific project needs. ISO 9001 Certified: Manufactured under strict ISO 9001 quality standards ensuring high reliability. High Tension Performance: Designed for post-tensioning in bridges and infrastructure with high stiffness. Versatile Applications: Suitable for bridges, viaducts, industrial buildings, dams, and mine projects. In-House Manufacturing: Produced entirely in our own factory by skilled workers for quality control. Comprehensive Warranty: Covers 1-3 years depending on specific requirements and product type. Fast Sample Delivery: Samples available within 25-35 days with free material cost (buyer pays shipping).