The standard specifications and dimensions of the side keel mainly include a section height of 30mm, a flange width of 25mm, 30mm, and 35mm, a standard length of 3m, and an allowable deviation of ± 5mm.
Core specification parameters of edge keel
Section size:
The standard cross-sectional height is 30mm
The flange width is divided into three series based on load requirements: 25mm, 30mm, and 35mm. ‌‌
L-shaped or U-shaped section design, with a right angle deviation of ≤ 1.5 ° to ensure installation accuracy. ‌‌
Length and tolerance:
The standard length is 3 meters, with a permissible deviation of ± 5mm
The curvature requirement is ≤ 3mm/meter. ‌‌
Material and Craftsmanship:
The substrate is cold-rolled steel strip, which has undergone hot-dip galvanizing treatment (zinc layer ≥ 60g/㎡). ‌‌
The thickness is usually 0.5mm (standard for high-quality products). ‌‌
Other common specifications reference
Some projects may use non-standard sizes such as 20mm × 30mm and 24mm × 38mm. ‌‌
The fixed spacing requirement is ≤ 500mm to ensure structural stability.