Basic requirements for PP-R pipes and fittings
1 Pipes and fittings must be hygienic, non-toxic, non-polluting, etc.
2 The heat resistance of pipes and fittings must be used above 95 °C water temperature for a long time. The short-term use temperature can reach above 110 °C, and the expansion and expansion coefficient should not be large.
3 The pressure resistance of pipes and fittings must be used at a pressure of 10 bar or more for a long time, and the strength is high, no leakage, no cracking, and the like.
4 Pipe and fittings should be corrosion resistant and non-fouling.
5 pipe insulation effect is good, low thermal conductivity.
6 The inner and outer walls of the pipe and fittings should be smooth, with low flow resistance, soft color and beautiful appearance.
7 It is convenient and reliable to use hot-melt connection.
8 The nominal pipe diameter of pipes and fittings shall comply with certain manufacturing standards and versatility, and the general pipe diameter is DN20/25.
9 The design flow of the pipeline should not be too large, and the water flow rate of the inner diameter of the pipeline should not be greater than 0.8~1.0m/s. The excessive flow rate is unfavorable to the system resistance. If the flow velocity is too small, the system cost will increase, so it should be considered comprehensively.
PVC High Speed Door are designed for indoor use and ensure rapid handling operations between different areas that should remain separated. These safe and efficient industrial doors are made of a shaped steel frame and covered with PVC. These high speed doors are safe and efficient and consist of a shaped steel frame covered with PVC. Safety is ensured by their photocells and barriers.
High speed doors protect us from harm, save energy and help us to separate processes for optimal productivity. A high speed door's most important job is to simply open and close quickly and safely every time you need it.
The high speed pvc roll shutter door require high strains, caused by the high operating speed and the frequency of openings, have to be taken into account during construction. In the same way, basic conditions like size and installation location add up to considerable requirements regarding safety and control technique.
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