Polyethylene pipe insulation Features: 1, insulation effect: polyethylene pipe insulation foam method is completely independent closed-cell foam, its thermal conductivity is only in 0.032w / mk thermal pipe insulation around pipes, not its insulation effective performance buried pipe insulation pipe, and cold strengths even more prominent. 2, anti-condensation: polyethylene pipe insulation is closed-cell structure urban heating pipe insulation, it is carried out by gas closed cell polyethylene insulation material itself rather than achieve adiabatic functions. Polyethylene pipe insulation has a very excellent resistance to moisture penetration. Polyurethane insulation construction technology is more of a preparation based on: People's Republic of China urban construction industry standards standard: CJ / T114-2000 promulgated by: People's Republic of China Ministry of Construction Effective Date: 2000-10-01 Second, according to atlases 4.4.1 It states: pipe ends should stay out of the first 150mm-250mm bare uninsulated area to prepare for welding. Third, the production process: the production process, Mr. outputs a high-density polyethylene outer sheath tube, then in polythene armor tube and the space between the pipe and then cast polyurethane rigid foam insulation production process is what we often say 'two-step'. Production process: steel rust - polyurethane foam - forming - product testing - storage