PE has many extrusion applications, such as wires, cables, hoses, pipes and profiles. Pipe applications range from small-section yellow pipes for natural gas to 48in diameter thick-walled black pipes for industrial and urban pipelines. The use of large-diameter hollow-wall pipes as a substitute for concrete rainwater drainage pipes and other sewer pipes is growing rapidly. Sheet and thermoforming: The thermoforming lining of many large picnic refrigerators is made of PE, which is tough, light and durable. Other sheet and thermoformed products include mudguards, tank liners, pan guards, shipping boxes and tanks. A large number of fast-growing sheet applications are mulch films or pond bottom villages, which are based on the toughness, chemical resistance, and impermeability of MDPE.
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