At present, the floor heating pipes supplied on the market are mainly made of PE-RT, PE-Xa, PE-Xb, PE-Xc and other pipes. Faced with so many pipes, what choice should the user make? Let's analyze the main characteristics of these pipes one by one, so as to select the pipes correctly and reasonably.

1. Heat-resistant polyethylene (PE-RT, the molecular structure is a linear one-dimensional structure). The application of PE-RT pipe started late, because it does not require special equipment (50,000 to 100,000 yuan per production line) and the process is particularly simple. Production There are many and miscellaneous companies, and some companies use HDPE materials to pretend to be PE-RT, etc. Also because the materials themselves are not resistant to high temperature, high pressure and other factors, quality problems often occur. So far there is no national standard, only the industry standard CJ/T175 -2002. Its density is only 0.925 g/cm3 (as can be seen from the transparency of the pipe), the structure of the molecules is sparsely arranged, the crystallinity is low, the resistance to oxygen permeability is poor, and the material body is very susceptible to aging by oxygen. It is rarely used in European countries.

2. Peroxide cross-linking (PE-Xa, the molecular structure is a planar network). The PE-Xa pipe is difficult to control due to its complex process and various product properties due to environmental, equipment, and human factors.

3: Silane crosslinking (PE-Xb, molecular structure is three-dimensional network). Due to environmental protection and other reasons, only a few domestic companies produce PE-Xb pipes. Due to the pollution of drinking water to the pipe, the European Communist system has banned its use in food contact occasions. The use of PE-Xb pipes was banned in Europe in 2004.

4: Irradiation crosslinking (PE-Xc, the molecular structure is a three-dimensional network). The PE-Xc pipe is cross-linked by radiation (belonging to the physical cross-linking method). This pipe has performances such as pressure resistance, temperature resistance, cross-linking uniformity, product stability, chemical resistance, environmental stress resistance, and service life. And has a strong advantage in environmental protection. It has been recognized by more and more peers and experts.

The matrix material of the irradiation cross-linked polyethylene pipe is high-density (density ≥0.94 g/cm3) polyethylene, with closely arranged molecular structure, high crystallinity, and strong resistance to oxygen permeability. Meigao PE-Xc pipe has been tested by National Chemical Building Materials Departmental testing, product performance meets national (GB/T18992.2-2003) and German standards (DIN16892). Passed the National Ministry of Health's product testing (GB5749-2006) related to drinking water hygiene and safety, and meets drinking water standards. Irradiation cross-linked polyethylene PE-Xc pipes have proven to be reliable after more than 40 years of application in Europe.

Summary: Because the low-temperature floor radiant heating project is a concealed project, and 60 degrees Celsius hot water is passed in the system, this means that when the local heating pipe bursts due to quality problems, the ground of the building will be destroyed. The loss is huge. Therefore, floor heating pipes used in low-temperature floor radiant heating systems have higher requirements than plastic pipes used in ordinary buildings: the system must strictly select the material, type, manufacturing process and quality of floor heating pipes. Only in this way can the 50-year life span of the low-temperature radiant floor heating system be realized.

Meigao electron beam irradiation cross-linked polyethylene (PE-Xc) tube, you deserve it!