For more complex civil buildings, in the design stage, each type of work (HVAC, water supply and drainage, power supply and lighting and construction) should first negotiate the space separation and determine the elevation range of each pipeline. Under normal circumstances, one cannot go beyond the limits set for oneself. In case of any individual section crossing the border, it shall negotiate with other projects.
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Before construction, the engineer of the equipment manager shall draw the pipelines and single lines of each type of work on a plan. One color pen for each type of pipe. Integrate the elevation at each intersection point to see if there is any contradiction, find it in time, and solve the problem before installation.
Spiral Corrugated Culvert Pipe Machine
When the air duct conveys general gas, the black steel plate air duct shall be derusted and painted with antirust paint. The dust-containing gas may be sprayed with anti-wear protective layer. When the ambient air humidity is relatively high, the outer wall of the air duct shall be treated with anti-corrosion and anti-rust. Phosphating primer or other corrosion-resistant coatings should be sprayed on the inner wall of galvanized steel plate air duct conveying high temperature and high humidity gas.
Spiral Corrugated Posttension Pipe Machine BPT-135/150
When the air duct transports high-temperature air or low-temperature air, the outer wall of the air duct shall be treated with heat preservation (cold preservation). The heat preservation purpose of the air duct conveying high-temperature gas is to prevent the heat loss of air in the duct (which occurs in the central air conditioning system in winter); In addition, it can prevent the room temperature from rising due to heat dissipation into the room when conveying waste hot steam or high-temperature gas, and can also prevent people from being scalded due to contact with the air duct.
