JANIBIF (R25T30)

Description

The R25T30 perforated sheet metal – Janibif the graphic beauty of large-diameter perforation. Its regular pattern, composed of round holes with a diameter of 25 mm, is arranged in a 60° staggered pattern, with a center-to-center distance of 30 mm. This openwork mashrabiya, identified by the designation Rv25-30, offers exceptional transparency of 63%, making it one of the most open patterns in the standard round perforation catalog. The production of Rv25-30 sheet metal requires very robust tooling: the 25 mm diameter punches require the use of mechanical presses of at least 30 tons, capable of perforating steel up to 3 mm thick with precision and regularity. The staggered arrangement limits tensile stress on the sheet metal and ensures better durability over time, despite a residual material bridge of only 5 mm between the holes. This configuration requires increased vigilance during punching, as any deviation or mechanical play can cause visible deformations over long lengths. Thanks to its large-diameter openings, the R25T30 – Janibif perforated sheet Janibif light, air, and perspective to pass through generously. Seen up close, it imposes a strong, almost sculptural graphic rhythm. From a distance, it creates an ultra-airy, almost immaterial mesh effect, like a vibrant metal skin depending on the RAL color chosen. This pattern is ideal for projects where visual impact is as important as technical function: facade cladding, commercial building envelopes, solar filters, or decorative grilles on cultural or commercial sites. Despite its apparent lightness, R25T30 perforated sheet metal remains mechanically vulnerable if used without care. The high percentage of empty space means reduced resistance to impact or bending forces. It is therefore essential to: - install it in a rigid metal frame for surfaces larger than 2 m², - consider reinforcement folds or stiffeners for large spans. R20T25 perforated sheet metal is used in architectural metal facades and sunshade screens in secondary structures. Note that for use in openwork fences, areas with a low risk of vandalism should be preferred. Rv25-30 sheet metal is generally available in 1.5 to 2 mm thick galvanized steel, with powder-coated or raw finish options. The average price of perforated sheet metal ranges from €45 to €65/m² for an order of 100 m², depending on the complexity of the layout and the finish chosen. For projects with tighter budgets, the R15T20 pattern is a good option, offering an interesting balance between openness and robustness, while providing a more discreet visual appearance and better mechanical resistance.

Uses

R20T30 – Largine perforated sheet metal has a transparency rate of over 50%, making this pattern particularly suitable for applications requiring high air and light transmission, while maintaining a graphic presence in its environment. Thanks to its large openings and uniform layout, this sheet metal can be used in architectural and technical applications where visual lightness and functionality must coexist in equal measure. R20T30 sheet metal is ideal for creating ventilated cladding on new or renovated facades. The large diameter of the perforations allows diffused light to pass through and produces a dynamic play of shadows on walls or windows. This type of metal sunshade is very effective in reducing direct heat gain, while allowing natural ventilation of the building envelope. With transparency greater than 50%, it promotes moisture evaporation and improves the durability of ventilated cladding systems. The R20T30 round hole perforated pattern can also be used to fill guardrails when visual openness is a priority. It offers a contemporary design that visually lightens the structure and allows for significant transparency, while maintaining fall protection. It is also ideal for creating semi-open fences, particularly in residential, landscaped, or commercial environments. The semi-opaque fence delimits spaces without enclosing them, while maintaining a controlled level of transparency. Covering technical equipment with R20T30 perforated sheet metal provides excellent industrial ventilation. With its large round perforations, R20T30 perforated sheet metal is excellent for technical applications: air conditioner covers, ventilated enclosures, transformer grilles, or garbage room grilles. The size of the holes ensures optimal air convection, which is essential for functionality.

Team advice

For an optimized range/price ratio, we recommend JANIBIF sheet metal JANIBIF Galvanized steel, thickness 1.5 mm