The specific classification and use of light steel keel:

The light steel keel has ceiling keel and spacer keel according to the purpose, and V-shaped, C-shaped, T-shaped, L-shaped and U-shaped keels according to the section method.

The symbol sequence of light steel keel is: product name, code number, width and height of section shape, thickness of steel plate and specification number. For example, the symbol of the ceiling keel with the cross-sectional shape of "C" type, width of 50mm, height of 15mm, and steel plate thickness of 1.5mm is: light steel keel for building DC50×15×1.5GB11981.

The appearance of the light steel keel should be flat, with clear edges and corners, and no burrs and deformation that may affect the use are not allowed to be cut. The galvanized layer must not have defects such as peeling, nodules, and falling. With regard to defects such as corrosion, damage, dark spots, pitting, etc., the rules in Table 2-81 shall be met when testing according to the rules. When checking the appearance quality, visual inspection should be carried out under the condition of light illuminating the hall 0.5m away from the product.

The surface of the light steel keel should be galvanized to prevent rust, and the double-sided galvanizing amount: no less than 120g/m*m for high-quality products.

Painted keel

The paint keel is made of fireproof galvanized sheet, which is durable. Choose economical placement structure, special connection method, combined loading and unloading. Convenience, saving man-hours and simple construction. The outer surface of the keel is galvanized steel plate, which is treated by baking paint.

The difference between the light steel keel and the paint keel is that the general light steel keel is not coated, but only coated (galvanized), while the paint keel has been painted, generally divided into black and white, and a small amount is baked according to the basic requirements of the plan. For other colors, the main reason is that most of the paint keel is used on the exposed keel, and the paint is to ensure that the exposed part will not be rusty and will not affect the beauty.

Bright frame keel

Flat series, groove series, three-dimensional groove series. Concealed keel: plane series

The overall surface of the paint keel is good, the lines are concise, beautiful and generous. The lacquered keel is safe, strong and beautiful, suitable for various mineral wool ceilings, aluminum square ceilings, calcium silicate boards and other supporting constructions.

It has the advantages of light weight, high strength, waterproof, fireproof, shockproof, sound insulation, sound absorption, etc., together with the advantages of short construction period and simple construction. It is a new type of ceiling decoration material, which is widely used in shopping malls, hospitals, banks, hotels , Factories, terminals, etc.

The primary standard of interval keel is divided into Q50, Q75 and Q100.

The primary standards for ceiling keels are divided into D38, D45, D50 and D60.