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DIN 8077 – Specifications for polypropylene pressure pipe dimensions – metric series.
DIN 8078 – Specifications for polypropylene pressure pipe, quality requirements and test methods – metric series.
DIN 16962 – Specifications for polypropylene Pts. 5, 6, 7, 8, pressure fittings. Types, dimensions and 9 & 12 general quality requirements and test methods – metric series.
POLYPROPYLENE PIPES (PPH) 20mm Ø to 500mm ØPOLYPROPYLENE PIPE : APPLICATIONS & USES Polypropylene is one of the most common, fastest growing and versatile thermoplastics currently used. Each year many tons of this material are converted into diverse products ranging from plastic bags through automobile parts to tanks and chemical piping systems
Waste – Over a period of many years, polypropylene has become a preferred material for handling many different types of liquid waste. This material’s wide range of chemical resistance makes it very suitable for handling the wide range of different chemicals and mixtures that are found in different waste streams. The unsuitability of polypropylene for use with concentrated oxidizing acids is generally not a problem because these acids will usually be diluted before they are disposed of. The high resistance of polypropylene to solvents is particularly important, because many solvents do not mix in water and often end up floating in a concentrated form near the top of the pipe. Thus, even though a waste stream may contain only 1% of a solvent, it is often not possible to regard this dilution because most of the solvent will often float to the top of the pipe. The material’s high temperature capabilities are also important in enabling it to handle any exothermic reactions that may occur when different chemicals mix.
Deionized Water – Large volumes of distilled or deionized water are used by a wide range of different industries. This water is often used for diluting chemicals, washing and rinsing. Polypropylene is commonly used as a piping material for conveying this water. Polypropylene piping systems are able to maintain the purity required in all but the most demanding installations. Fusion joining gives fast reliable joining without the use of hazardous and noxious solvents that may contaminate the water. The total quantity of added lubricants and organic materials in polypropylene is far less than found in many other plastic piping materials. The use of
A pigmented material is recommended to reduce degradation of the pipe material from ultraviolet light. The pigmented pipe wall will prevent the transmission of ambient light into the pipe material. This prevents possible degradation of the pipe wall and corresponding particulation of plastic into the water stream.
The chemical resistance of polypropylene to caustic solutions such as potassium hydroxide and sodium hydroxide is very good. The fusion joining method gives strong joints that are resistant to attack by these strongly caustic solutions. This contrasts to solvent cemented joints which may be attacked by some caustic solutions. For these reasons polypropylene is often used to transport caustic soda used for neutralizing acidic waste streams.
PPH PIPES ARE PRODUCED AS PER DIN 8077 TABLE GIVEN BELOW
COLOR RAL 7032 - BEIGE GREY / PEBBLE GREY