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 states: pipe ends should stay out of the first 150mm-250mm non-exposed pipe insulation pipe insulation region power 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 steel jacket pipe insulation manufacturers how to find now find steel jacket pipe insulation manufacturers have not a very difficult thing, There are many ways because of the underground buried pipe insulation, the most common means of this approach is the use of the network, usually found quickly on the Internet, and only takes a few minutes, it is easy to get started. Ditch and overhead imperative.