Light steel keel Light steel (painted) keel is a new type of building material. With the development of my country's modernization construction, it has been widely used in hotels, terminals, passenger terminals, stations, etc. in recent years. Theaters, shopping malls, factories, office buildings, renovation of old buildings, interior decoration settings, ceilings and other places. Light steel (painted) keel ceiling has the functions of light weight, high strength, adaptability to waterproof, shockproof, dustproof, sound insulation, sound absorption, constant temperature, etc. It also has the advantages of short construction period and simple construction. For this reason, it is deeply favored by users and design units. Widely used. The difference between light steel keels and painted keels is that general light steel keels are not coated and are plated (galvanized), while the surface of the painted keels is painted, usually black and white, and a few are baked into other colors according to design requirements. Mainly because most of the painted keels are used in exposed keels, and the paint is used to ensure that the exposed parts do not rust and affect the appearance. Light steel keels include ceiling keels and partition keels according to their uses, and V-shaped, C-shaped, T-shaped, and L-shaped keels according to their cross-sectional forms.
(1) Product specification series The main specifications of partition keel are divided into Q50, Q75 and Q100. The main specifications of suspended ceiling keels are D38, D45, D50 and D60.
(2) Product marking method The marking sequence of light steel keels is: product name, code number, width, height of cross-sectional shape, steel plate thickness and standard number. For example, the cross-sectional shape is "C" shape, the width is 50mm, the height is 15mm, and the steel plate thickness is 1. SMM's ceiling joists are marked as: Light steel joists for construction DC 5 0 XIS XI． SGBllg sl
(3) Appearance quality The appearance of the light steel keel must be smooth with clear edges and corners, and the incisions are not allowed to have burrs and deformations that may affect use. The galvanized layer must not have defects such as peeling, lumping, or falling off. Defects such as corrosion, damage, black spots, pitting, etc. shall comply with the provisions of Table 2-81 when tested according to prescribed methods. During appearance quality inspection, visual inspection should be carried out under bright light conditions 0.5m away from the product. The surface of light steel keels should be galvanized to prevent rust. The galvanizing amount on both sides is: no less than 120g/m*m for high-quality products, no less than 100g/m*m for first-class products, and no less than 80g/m*m for qualified products. Features of V-shaped hanging keel light steel keel:
V-shaped hanging keel, also known as cassette keel, is our company’s exclusive patented product and has applied for a national decorative material patent number (main keel -ZL002 63956.4; Parasaurus -ZL003 34437.1). This product breaks the traditional ceiling keel form in terms of design and manufacturing, and uses high-quality snowflakes as raw materials. It has strong fireproof, anti-rust, and anti-aging properties. All functions have passed the national inspection (GB11981-2001) and is easy to construct. , outstanding effect, widely used in modern decoration projects.
There are no anchor-shaped hooks on both sides of the V-shaped groove in a symmetrical and orderly manner. The hook can be combined with the auxiliary keel to form an imperial or metric combination. The connection between the main keel and the auxiliary keel needs to be locked with eight centimeter screws. It is stronger and durable.
Notes on the installation of V-shaped hanging keels:
1. When used for suspended ceilings, the long side of the gypsum board must be perpendicular to or laid flat with the auxiliary keel, and the fixings ( The distance between the self-tapping screws and the gypsum board is about 10-16mm. When tightening, the gypsum board must be firmly fixed to the frame;
2. When fixing the board, start from the long and short sides of the middle of the board. The edges are fixed, and after the nails are positioned, the nail heads are slightly buried in the board, but the board surface must not be damaged;
3. When the gypsum boards are butted together, a horizontal brace keel must be added at the joint, and the gypsum boards should be When installing in a stress-free state, no forced positioning is allowed. The bottom surface of the auxiliary keel should be ensured to be on the same plane, and the connecting parts of the keel extension should be staggered.
The painted keel is made of cold-rolled continuous hot-dip galvanized steel strip and painted strip as raw materials, and is a thin-walled profile with a reasonable "T" cross-section structure that is composite rolled through cold bending technology.
Characteristics and uses of painted keels
(1) Absolutely fireproof: Painted keels are made of fireproof galvanized sheets and are durable.
(2) Reasonable structure: Adopt economical placement structure, special connection method, combined loading and unloading. Convenient, saving man-hours and simple construction.
(3) Beautiful appearance: The surface of the keel is made of galvanized steel plate and has been painted.
(4) Wide range of uses: suitable for shopping malls, office buildings, hotels, restaurants, banks and various large public places.
Classification
Open frame keel: plane series, groove series, three-dimensional groove series. Concealed frame keel: plane series
The overall plane effect of the painted keel is good, with simple lines and beautiful appearance. Painted keels are safe, strong and beautiful, and are suitable for supporting construction of various mineral wool ceilings, aluminum square ceilings, calcium silicate boards and other supporting constructions. It has the functions of light weight, high strength, waterproof, fireproof, shockproof, sound insulation, sound absorption, etc. It also has the advantages of short construction period and simple construction. It is a new type of ceiling decoration material and is widely used in shopping malls, hospitals, banks, hotels, and factories. , terminal building, etc.