Jiangsu Prefabricated Factory Building Roof Panels
Common types of roof panels for prefabricated factory buildings in Jiangsu include chemical-specific steel strand double-T panels, prestressed concrete saddle-shaped shell panels (saddle panels), and polyurethane-edged rock wool sandwich panels. Here is a detailed introduction:
Chemical-Specific Steel Strand Double-T Panels: These are prefabricated concrete components with a cross-section consisting of two T-shapes side by side, connected by a thin plate in the middle. They are commonly used for large-span roof panels or floor slabs. The "steel strands" serve as prestressed reinforcement, significantly enhancing the crack resistance and load-bearing capacity of the components. The term "chemical-specific" indicates that the panels undergo special treatment in terms of material composition and surface protection to resist acid-base corrosion and high-humidity environments. Their span ranges from 9 meters to 30 meters, meeting the needs of most chemical workshops, warehouses, sewage treatment tanks, and other scenarios. When selecting a manufacturer, one can check whether they comply with the "Prestressed Concrete Double-T Panels" and relevant chemical building anti-corrosion specifications, whether they can provide third-party test reports and other documents; pay attention to product application cases; and utilize industry associations and professional platforms.
Prestressed Concrete Saddle-Shaped Shell Panels (Saddle Panels): These are空腹 thin-walled structures that combine panels and frames, scientifically known as negative Gaussian curvature panels. They are formed using bidirectional spatial prestressing technology and have a wavy saddle shape. They possess self-waterproofing, earthquake resistance, and fire resistance functions, making them suitable for the roof covers of large-span buildings such as railway platforms, warehouses, and theaters. They are also gradually being applied in industrial factory buildings and other fields. Jiangsu Province has relevant technical standards ("Su GT14 - 2005" and "Su G/T14 - 2011") applicable to general industrial and civil building roof panels in non-seismic areas and areas with seismic fortification intensities of 6 and 7 degrees, with a design service life of 50 years. Modern products cover span specifications from 12 to 30 meters. To address past shortcomings, their comprehensive performance can be optimized by laying insulation and waterproof layers and performing shotcrete roughening and sound absorption treatment under the panels.
Polyurethane-Edged Rock Wool Sandwich Panels: These are new building materials with characteristics such as thermal insulation, fire resistance (non-combustible), and convenient construction. They offer significant energy-saving effects and high cost-effectiveness, making them suitable for the roofs of steel structure factory buildings. When the density of rigid polyurethane is 35-40 kg/m³, its thermal conductivity is only 0.018g-0.023 w/(m·K), providing excellent thermal insulation, fire resistance (withstanding temperatures exceeding 1000°C), moisture and water resistance, and strong deformation resistance.
