Outstanding features

  • Fast drainage thanks to the high 5-rib steel sheet design, the corrugated iron easily conducts rainwater, and is good at preventing overflow
  • Saving purlin costs thanks to the larger purlin spacing, reducing the amount of materials needed
  • Suitable for many design styles, increasing the aesthetics of the project
  • Often used for large-scale projects where effective drainage is required such as factories, warehouses, and conference centers

5-rib steel sheet (also known as square wave sheet) is a type of roofing panel made from a roll of sheet metal with a raw material width of 1200mm, after finishing it is 1070mm with 5 prominent square waves. This square wave design allows for quick drainage and effective overflow prevention, making it particularly suitable for large-scale projects with a low roof slope. In the market, 5-rib steel sheets are provided by many reputable factories such as Đông Á Steel, Hoa Sen Steel, Nam Kim Steel… with durable quality, diverse colors, meeting the aesthetic criteria of many modern construction projects.

In fact, 5-rib steel sheets mainly differ in the coating layer (cold sheet, galvanized sheet, colored galvanized sheet…) and the material thickness. Regardless of the type, the primary purpose remains roofing for large-scale constructions such as industrial factories, warehouses, sports halls, hospitals, conference centers… With high waves and a larger truss spacing, 5-rib steel sheets optimize water drainage capability, reducing leakage and water infiltration during heavy rain.

5-square wave sheets come in a variety of colors, enhancing the aesthetics of the project. Their good thermal insulation capability and the size of the sheets produced to requirements reduce material waste and construction time. The large wave spacing, combined with rational truss layout, creates high sturdiness, supporting the structure to withstand harsh weather conditions. Thanks to these advantages, 5-rib steel sheets are increasingly favored in both civil and industrial fields, especially in places requiring durability and long-term usage efficiency.

5-rib steel sheets feature a modern design, quick water drainage, and limit water accumulation. Additional secondary waves between the main waves increase stiffness and prevent deformation during installation. Installing 5-rib steel sheets also saves costs on materials such as trusses, while helping with thermal insulation, creating a cooler space. However, compared to 9-wave or 11-wave sheets, the fewer waves may reduce horizontal coverage. Additionally, the cost of 5-rib steel sheets will depend on the quality of the coating, thickness, and brand of the sheets.