Classification of Purified Colored Steel Plates
1. Coloured steel plate is generally divided into: glass-magnesium, gypsum rock wool, rock wool, polyphenyl foam color steel plate, as well as paper honeycomb and aluminum honeycomb. Paper honeycomb, aluminium honeycomb and polyphenyl foam are not good, which do not conform to the fire code. Paper honeycomb filler is flammable, aluminum honeycomb filler has good heat transfer, so the temperature on the other side of the board soon exceeds 300 C, which does not meet the requirements of fire protection. Now the combustion limit should be within one hour. But in some areas, polyphenyl foam color steel plate with flame retardant is used.
2. According to the panel material: Baosteel, Huamei, etc., the thickness of the substrate is 0.426 Huamei or 0.5 Baosteel. The plate of Baosteel has high zinc content and is relatively corrosion resistant. And the thickness does not go down. Some people say that the smoothness of Baosteel is good, but in fact it is not obvious. Baosteel is more expensive than other brands.
3. According to the workmanship: manual and mechanism, most of the manual slabs have the same strength as the machine-made slabs, so long as the glue is not a problem, it is generally okay for the machine-made slabs; but the rock wool slabs absolutely need to use the manual slabs, and the roof is better to add a layer of gypsum or glass-magnesium slabs, the machine-made rock wool slabs have no strength. Handmade boards generally cost about 5-10 yuan.
4. Place of color steel plate production: Suzhou, Foshan, Guangzhou, Changzhou. Suzhou and Foshan boards are more used.
II. Selection of Color Plate in Pharmaceutical Factory
Nowadays, many pharmaceutical factories choose hollow glass magnesium with similar mechanism or handwork. Strength and fire protection are all right. But for the cold climate and poor indoor heating areas, the thermal insulation effect is poor, especially for the roof, there will be dew phenomenon. Some of the poor quality of the plate, there will be glass magnesium and color steel plate peeling, some appearance can be seen corrugated.
Rock wool board, because of the influence of rock wool on the clean area, and sometimes swell when wet. Less use. Some enterprises adopt glass-magnesite wool handicraft boards. Some enterprises choose gypsum rock wool handmade board.
Enterprises that want to save money, if they can communicate well with local fire departments, can also adopt the following schemes: corridors, main passageways and escape passages, flammable and explosive areas choose mechanism hollow double glass magnesium plate, other areas choose polyphenyl foam color steel plate with flame retardant. Save money but also have a certain degree of security.