1.the pipes before connecting pipes and fittings, and check the accessories according to the design requirements, and Visual inspection on the construction site, can only be used to meet the requirements.
2.pipes and fittings should be placed at the construction site after a certain amount of time to connect, so that the temperature of the pipes and fittings.
3.piping connection tubes should be clean, after each completed nozzle should be blocked to prevent debris into the Canal.