The common specification size of 60 sets of keel is 60 × 27 × 0.6mm (width × height × thickness), mainly used for non accessible ceiling systems, using C-shaped or U-shaped galvanized steel plate structures.
Core specification parameters of 60 sets of keel
According to the national standard for light steel keel used in construction (GB/T 11981-2022) and industry practice, the main technical characteristics of the 60 series secondary keel are as follows:
Standard size:
Width 60mm x height 27mm, thickness is usually 0.6mm (non accessible ceiling) or 1.2mm (accessible ceiling). ‌‌
The cross-sectional form is mostly C-shaped or U-shaped structure, using galvanized steel plate material (double-sided galvanizing amount ≥ 120g/m ²). ‌‌
Classification and application scenarios:
Regular model: C60 × 27 × 0.6mm, suitable for ordinary commercial space ceiling. ‌‌
Enhanced version: CS60 × 30 × 1.2mm, used for suspended ceilings in public spaces that require manpower support. ‌‌
Special designs such as V-shaped card type secondary keels (such as ZD25 × 30 × 0.7mm) are suitable for irregular ceiling designs. ‌‌
Supporting technical parameters
Installation spacing: arranged perpendicular to the main keel, with a spacing of usually 30-60cm, forming a standard grid of 300 × 300mm. ‌‌
Connection method: Fixed to the main keel through buckles or self tapping screws, and some models use German style direct hanging double hanging technology. ‌‌
Length specifications: commonly 3 meters per piece, but there are also customized sizes of 2.6-2.8 meters to meet transportation needs. ‌‌
Precautions
There may be slight differences among different brands (such as the design of the Kenaf 60 series cardless keel). ‌‌
The actual selection should be based on the load-bearing requirements of the ceiling. For non accessible ceilings, a thickness of 0.6mm is recommended, while for accessible ceilings, it should be ≥ 1.2mm