The color steel sandwich panels has the advantages of light weight, high efficiency and heat preservation. Due to the different filling materials, it can be divided into several categories. The formation of the outer steel plate fully considers the structure and strength requirements, and the overall appearance is beautiful. The inner layer is formed into flat sheets to meet various needs.
There are six kinds of core materials: polystyrene sandwich panel (EPS sandwich panel), extruded polystyrene sandwich panel, XPS rock wool color steel sandwich panel, hard polyurethane sandwich panel (PU sandwich panel), three Polyester sandwich panel, PIR sandwich panel, phenolic sandwich panel is PF sandwich panel, rock wool sandwich panel is RW sandwich panel. In the construction of daily workshops, warehouses, garages, and prefabricated houses, EPS sandwich panels, pu/pir/puf sandwich panels, and rock wool sandwich panels are commonly used.
There are two types of panels: metallic and non-metallic. Metal panels are easy to process and can be made into various shapes, but in some cases non-metallic panels have effects such as corrosion resistance and impact resistance. Metal sheet sandwich panels are widely used in large industrial plants, warehouses, gymnasiums, supermarkets, hospitals, cold storage, activity rooms, building additions, clean workshops and places that require thermal insulation and fire protection.
The sandwich panel has beautiful appearance, beautiful color and good overall effect. It integrates load-bearing, heat preservation, fire prevention and waterproof. It has no secondary decoration, convenient equipment, short construction period and good induction efficiency. It is widely used and has great potential. Environmentally friendly building materials. From the perspective of the use time of color steel sandwich panels, the thickness of the substrate is very important. However, some manufacturers of color steel plates often play tricks on the substrate, color steel plate coating or composite film. They reduce the thickness of the substrate, but increase the thickness of the peritoneum to reduce the production cost of the color steel plate, and greatly reduce the service life of the color steel plate.
How to distinguish the quality of the sandwich panels?
Investigate the leaking edge of the colored steel plate and get a piece of colored steel plate. I first investigate the colored steel plate to show whether the steel is finely crystallized and whether there are gray, black and impurities. If the cut surface is crystallized finely, the quality is better. Listen to the sound and tap the color steel plate with your fingers or hard objects. If the raw material of the color steel plate is not good, the sound will be dull, and the metal sound will not be obvious. The metal sound of color steel plate with better raw materials is loud and bright. Check whether the quality certificate of the color steel plate has the relevant part of the inspection specification.
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