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Plastic Ventilation Systems

Because of its lower flammability, PPs is often used for ventilation and exhaust air piping in industrial facilities and buildings. PPs is a low-flammability polypropylene which complies with building material class B1 (to DIN 4102) thanks to the addition of flame retardants. 

In industrial facilities, thermoplastics with low flammability are used to remove air and aggressive gases, because metal materials are vulnerable due to their susceptibility to corrosion.  

PP-EL-s is used for potentially explosive atmospheres, where static charges can occur with liquids or dusts. To safely discharge the static electricity, piping systems have to be made of conductive materials. 

Plastic Ventilation Systems for Swimming Pools 

Plastic ventilation systems are perfect for swimming pools and Spa centres. Usually, to maintain these types of centres, much chlorine is used to ensure the excellent quality of the water. Chlorine is a pretty aggressive chemical for metal, and it is usually exposed to the air. So, to avoid any corrosion, ensure easy cleaning and long-lasting solution, plastic is used for the ventilation systems in Swimming pools and Spa centres. 

Plastic Ventilation for Metal Manufacturing Industry 

Plastic ventilation solutions for the anodisation and powder coating of aluminium profiles is more than worth considering. For this industry, piping systems and basins made of HDPE, PP and PVDF can be installed to ensure a long-lasting solution. Operating acids in this industry can be 5 % NaCl and 20 % HNO3 at a temperature of 50 °C and similar. The piping system for transporting exhausted air and oleaginous wastewater usually operates between 10 °C and 30 °C at a maximum pressure of 9 bar. 

The surface pre-treatment of aluminium for anodisation and powder coating is done by pickling the metal surface via inorganic acids called pickle liquor. This process, mainly hydrochloric, sulphuric, nitric, chromic, phosphoric, and hydrofluoric acid, is used. This etching process removes the natural oxide layer and impurities such as stains, inorganic contaminants and rust of the aluminium surface from ferrous metals, copper and aluminium alloys. 

Due to its excellent chemical resistance against inorganic acids, the thermoplastic material is frequently used for pickling processes. Solutions made of PP and PVDF are used to manufacture pickling tanks. Piping systems for process control lines made of PP and PVDF and ventilation pipes out of PP, PP-s and PVDF are also the best solutions for this industry. 

The final refinement within of anodisation process is done via electrolysis. In this process, the attached DL is used for anodising the material within sulphuric or oxalic acid. As a consequence, top metallic surfaces become aluminium oxide. Furthermore, the aluminium can also be powder coated, which means that powder lacquer will cover the electrostatically charged material. Then the aluminium profiles transported to a drier via a rail system to cure the powder. 

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