First of all, the pipes are made of different materials:
1, PERT pipe is made of heat-resistant polyethylene PE-RT, which is made by high-temperature melt extrusion. The raw materials of pipes are nontoxic, and there is no cross-linking in the intelligent manufacturing process.
2.PEX pipe is a series of common names, including PE-Xa, PE-Xb, PE-Xc, etc. In the production process, polyethylene needs silane crosslinking.
Second, the maintenance methods are different:
1 and PERT can be repaired by hot-melt connection, and the pressure resistance after repair is the same as that of the original pipeline.
2.PEX series pipes can only be repaired by external pipe hoop.
Third, the scope of use is different:
1 and PERT can be used not only for floor heating, but also for the production line of edible fluids such as drinking water and beverages.
2, but PEX tube is not good, because it is a cross-linked tube and has certain toxicity.
Characteristics of PE-RT products
1, good stability and long-term pressure resistance: the pipe has good uniformity, stable performance, good thermal creep resistance and excellent long-term hydrostatic pressure resistance; Especially PE-RT II, the above performance can reach the level of PE-Xb tube.
2. The pipeline is easy to bend, and the construction is convenient: the bending radius is small (maximum r≤5D), and the stress in the bending part can be relaxed quickly, so as to avoid the pipeline from being damaged in the bending part due to stress concentration during use. PE-RT pipe can be connected by hot melt, and it is convenient to maintain if the pipe is damaged during use.
3. Good impact resistance and high safety. The low-temperature brittle temperature can reach 70 degrees, and it can be transported and constructed in a low-temperature environment;
4. Anti-aging and long service life: Due to the excellent characteristics of PE-RT materials, PE-RT pipes can be safely used for more than 50 years at a working temperature of 60℃ and a pressure of 0.8MPa.
5, the processing technology is convenient, and the quality is easy to control;
6. Waste pipes can be melted and recycled.
The above contents refer to Baidu Encyclopedia -PE-RT and Baidu Encyclopedia-PE-X.