(1) The roof waterproofing layer is exposed to nature, exposed to hot sunlight, wind blows, and rain and snow erosion
The temperature of severe cold and winter heat afflicted, the change of temperature difference between day and night was repeated, and there was no excellent wood quality and good protection measures. It was difficult to achieve the required durability. Therefore, a waterproof material with high tensile strength, high elongation, and good aging resistance should be selected.
(2) Why the wall leaks, because now the wall is too thin, mostly for light block masonry, a large number of internal and external joints, and then the combination of doors and windows and the wall, the seal is not strict, rain from the seam infiltration. Waterproof wall can not be used coil, only paint, and the combination of exterior decoration materials. Only sealant can solve the problem.
(3) Waterproof materials for underground buildings. The underground waterproof layer is soaked in water or very moist soil for a long time. The waterproof material must have good water resistance.
(4) There are three characteristics of waterproofing in toilets. The first is not affected by the natural climate, the temperature change is not, the material's elongation rate is not high; second, the area is small, there are many yin and yang angles, and there are many pipes through the floor; Third, the waterproof layer on the wall is tiled and bonded. Agent affinity is good. According to the above three characteristics, it is not possible to choose a coil, only the coating is most suitable.
(5) There are more and more overpass projects in urban construction, and reinforced concrete slabs must be waterproof in order to extend the service life.
stainless steel commercial flat washers are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. Commercial flat washers generally have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resist ance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel.
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