What are the measures for building insulation in hot summer and cold winter areas?
National Standard: Thickness plus or minus 2MM Length Positive and negative 2 ~ 5MM Width Positive and negative 3MM.
Need to choose the appropriate ground radiation heating method of ground materials. Ground radiant heating system mainly through the ground concrete and ground material to heat the radiation to the room, so during the heating season, the ground material will always be subject to a certain temperature of continuous heating. So the ground material suitable for good heat dissipation, material properties are not sensitive to changes in temperature of the stone or composite floor, the current solid wood flooring is not suitable for ground radiant heating system. Need to choose a pipe with anti-oxygen performance. The application of the plastic pipe itself has a certain permeability, the system exists oxygen prone to aerobic corrosion, the system of metal fittings and metal equipment and other devices produce corrosion damage, resulting in the use of the process of leakage hazards. Therefore, in order to ensure reliable operation of the floor heating system, the selected pipe must have anti-oxygenation performance and meet the requirements of DIN 4726 for oxygen permeation: less than 0.1 mg / L.d at 40 ° C.
High-level 30 meters scaffolding, the use of aluminum single-tube scaffolding. Aluminum alloy single tube scaffolding new product patent original
The construction of lifting the Secretary of the signal workers the construction of lift drivers material hoist drivers mining machinery operators building tower crane operators shovel soil transport machinery Operators pile mechanics operator pressure road concrete machinery operator high-altitude operation of mechanical operators elevator installation and maintenance workers; reinforced prestressed mechanical operators mechanical parking equipment operators mechanical Parking equipment operator high-altitude building cleaners blasting
