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how are plastic pipes tested?

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Plastic pipe testing is one of the most important parts of the manufacturing process of different pipes made of polyethylene, polypropylene or PVC. These tests are crucial for manufactures to determine the quality, strength and tolerance of their products. In the modern world, plastic pipes serve a myriad of purposes, including conveyance of drinking water, waste water, chemicals, heating and cooling fluids, irrigation and much more. Therefore, it’s fair to say that there’s a strong dependence on plastic pipes for life in general. Since plastic pipes have become quite indispensable, manufacturers are expected to supply quality products, adhering to various international standards. The most common test method is to use water under moderate pressure. However, installers sometimes opt for testing with air pressure because it is quicker and easier. But air testing, if done improperly, can be hazardous. Hydrostatic Pressure Testing: The purpose of this test is to determine the resistance of thermoplastics pipes and short-time hydraulic burst to constant internal water pressure at a constant temperature. It is applicable to thermoplastic pipes intended for the conveyance of fluids. Environmental Stress Cracking Testing: The purpose of this test is to determine the susceptibility of ethylene plastics to environmental stress-cracking when subjected to conditions such as soaps, wetting agents, oils, or detergents. The test is performed by slowly bending the test specimens and placing them in a holding clamp. The clamp and specimens are then placed in a test tube and immersed in a specified reagent. The test tube is sealed and placed in a constant-temperature bath. Multiple specimens can be tested at the same time. Drop Weight Impact Testing: Impact tests are performed on plastic pipes to determine the impact required to break or rupture the pipe and its components.

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