Door panel: door panel is made of stainless steel 304 with no frame. Core materials are paper honeycomb, aluminum honeycomb, PU, EPS and etc. The installation sites of door lock, door closer and hinge are reinforced with square tubes of more than1.5mmthickness which are compression moulded by special technology.
Door frame: it is made of completely stainless steel 304. The connection types with wallboards are double-clip type and aluminum connection. The former is applied mostly to machine made wallboard and the latter hand made wallboard. The accessories are double window and lift type sweeping bar. The lock can be famous door lock or the owners can select lock brands themselves.
Specification: common sizes 800X2100, 900X2100, 1500X2100 or1800X2100, can customize to customers` requirements, the materials can be selected according to customers` requirements such as306Lor other special materials.
Features: the stainless steel 304 door we produced are of elegant appearance, sturdy and durable, acid and rotting resistance and thermal insulation. It is the first choice for high-end projects at home and engineering concerning foreign affairs that requires for anticorrosion and high quality such as electronics factory and food factory
Hospital Sliding Door,Hospital Automatic Sliding Door,Hospital Sliding Glass Door,Hospital Sliding Ward Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffastdoor.com
Solar water heater to buy and maintenance of knowledge to explain
Purchase articles For a long time, solar water heaters, low barriers to entry in this industry, fake and shoddy products flooding. Currently on the market in Sichuan Province emerged hundreds of large and small brands of solar water heaters, dazzling, unable to tell the difference between good and bad. August 2010 AQSIQ sampling of solar water heater products, and the results announced to the outside world through the understanding of the sampling process and content, through the industry's summary and research, consumers are advised to follow the steps to pick , Will be able to buy desirable products. First of all look at product quality and technical indicators: First, the thermal performance indicators, the "average daily efficiency" the higher the better, the "average heat loss coefficient" the lower the better. Second, fine observation Vacuum tube glass tube coating, this layer of coating is called solar selective absorption coating, good quality coating color uniform, no scratch film, no peeling or peeling phenomenon, there is no glass Stones or knot phenomenon, supporting the inner glass tube support placed properly, not loose. Third, pay attention to the tube spacing between the vacuum tubes, the general center of two tubes at about 80mm appropriate. Fourth, pay attention to whether the design of the product can take full advantage of the vacuum tube heat absorption surface, the vacuum tube can maximize the light. Fifth, in general, the weather in winter and no sunlight, you need to use with electric heating device to use, so you should also choose a product with electrical safety design. Six, check the water tank insulation thickness. Flat insulation thickness should be ≥ 50mm, the best overall polyurethane foam insulation. Polyurethane foam was pale yellow, a bit like sponge, foam has more uniform pores, hand squeeze a certain flexibility, but the insulation is too soft, the density is smaller, is not conducive to heat preservation. Seven, household solar water heater bracket design should be reasonable, there should be sufficient strength and stiffness to ensure adequate load-bearing capacity. Many solar water heaters due to wind resistance in the design and product quality problems, resulting in blown, collapsed, broken vacuum tube and other more serious losses. Finally, look at the needs of their own families: First, the purchase should also take into account the number of permanent residents at home to determine the size of the purchase of domestic solar water heater capacity. Generally 40 liters of water per person is appropriate. In addition, the purchase should ask the vendors, their nominal capacity refers to the total amount of water capacity or the actual capacity of the water capacity, how much difference between the two. Second, we should pay attention to winter easy to use as a standard, take a look at the winter can provide sufficient hot water, winter tank insulation effect, rather than the price. Therefore, consumers in the choice of solar water heaters, do not let the dealer led by the nose, we must take winter easy to use as a standard, easy to use all year round to choose the product. Based on the above elements, listen more and more to ask more, you will be able to pick the right product for your home. Maintenance articles First, the vacuum tube in the empty sun, the tube temperature can reach about 250 ℃, so in the water tank or the first water, must be before sunrise or half an hour after the sun set aside. Second, we should pay attention to regularly check the water heater pipes, vents and other components are working properly. In a serious air pollution or windy sand, dry areas, to be regularly washed vacuum tube. Third, non-professionals do not easily move, loading and unloading machine, so as not to damage the key components. After the installation is completed, the first water must be in the morning or evening, because of the vacuum so that the vacuum tube temperature is very high, suddenly into the cold water will cause "fried tube." Water tank to maintain a certain amount of water to avoid empty drying, affecting the life of the glass vacuum tube. Fourth, we should pay attention to regular sewage system to prevent pipeline obstruction; and water tank cleaning to ensure clean water. Sewage, as long as the guarantee of normal water inflow, open the drain valve until the drain valve out of the water on the line. Fifth, the vacuum tube solar water heaters, vacuum tube should always check the degree of vacuum or the glass tube is broken, when the vacuum tube of barium - titanium getter to black, indicating that the vacuum drop, the need to replace the collector, but also should clean the reflector . Collector heat-absorbing coating if damaged or off should be promptly repaired. All brackets, pipes and other brushing once a year protective paint to prevent corrosion. Six, pay attention to prevent stuffy sun. Circulation system to stop the cycle is called stuffy sun, stuffy sun will cause the collector internal temperature rise, damage to the coating, so that the box insulation deformation, glass rupture occurs. Suffocation caused by the drying sun may be blocked by the pipeline; in the natural circulation system may also be cold water supply, hot water tank lower than the upper circulation caused by the tube; forced circulation system may be caused by the circulating pump to stop working. Seven, if it is equipped with auxiliary heat source all-weather hot water system, should regularly check the auxiliary heat source device and heat exchanger work properly or not. For the auxiliary heat source is electric heating, must be sure to use the leakage protection device before work, otherwise it can not be used. For heat pump - solar heating system, you should also check the heat pump compressor and fan work is normal.