One. Labor costs for installing PPR pipes.
The installation costs for PPR pipes vary depending on the region. The typical cost calculation for PPR pipe installation is based on the entire project. based on experience, the labor cost for a 80 square meter house with water and heating systems is approximately 1200 yuan.
Two. What should be noted when installing PPR pipes?
1、PP-R pipes have lower hardness and stiffness compared to metal pipes, and should be protected during handling and construction to prevent mechanical damage from improper external forces. After being buried, the location of the pipes must be clearly marked to avoid damage during subsequent renovations.
2、PP-R pipes exhibit certain brittleness at temperatures below 5°C. Exercise caution during winter construction and use sharp cutting tools to slowly cut the pipes. Do not apply pressure or impact to existing pipes. If necessary, cover vulnerable areas with protective materials.
3、PP-R pipes are susceptible to aging and degradation due to prolonged exposure to ultraviolet radiation. When installed outdoors or in areas exposed to direct sunlight, they must be wrapped with a dark protective layer.
4、PP-R pipes should be connected using heat fusion welding for all connections except those connecting with metal pipes or water fixtures, which should use mechanical connection methods such as threaded fittings or flanges. This will ensure that the pipes are integrated and have no leakage points.
5、PP-R pipes have a large linear expansion coefficient (0.15 mm/m°C). When used in exposed or concealed applications, or when buried without a protective sleeve, it is necessary to implement technical measures to prevent pipe expansion and deformation.
6、After installing the pipes, pressure testing must be performed before sealing (direct burial) and applying the decorative covering layer (non-direct burial, concealed). The pressure test for cold water pipes should be 1.5 times the system's operating pressure, but not less than 10 MPa. The pressure test for hot water pipes should be 2 times the operating pressure, but not less than 1.5 MPa. The pressure test duration and method must comply with the specified technical procedures.
7、When using PP-R pipes in open or concealed applications, support and hanging systems must be installed according to the relevant regulations.