Products -
PE-RTII type plastic sleeve Plastic prefabricated polyurethane hot water insulation pipe
Key words:
PE-RTII type plastic sleeve Plastic prefabricated polyurethane hot water insulation pipe
Related downloads :
Classification:
PRODUCTINTRODUCTION
At present, China's secondary heating network operating pressure, temperature is basically in 0.8MPa, 85 ℃
The operating pressure of the pipe network is generally not higher than 0.7MPa, and the operating temperature is generally not more than 70℃.
The operating pressure of the pipe network is generally not higher than 0.7MPa, and the operating temperature is generally not more than 70℃.
Considering the corrosion, connection and cost problems of steel working pipe and the suitability of plastic working pipe, this product is specially developed.The PE-RTII type heat-resistant polyethylene (PE-RT) pipe is used as the working pipe.
PE-RTII heat-resistant polyethylene pipe instead of steel pipe prefabricated trinity hot water insulation composite pipe.
SERVICE LIFE
Pipeline hydrostatic test at 110 ℃ has been more than 16,000 h. According to the national standard "plastic piping system with extrapolation to determine the thermoplastic material in the form of pipe long-term hydrostatic strength" (GB/T 18252-2008) in the provisions of the 30 ℃ ≤ △ T < 35 ℃, extrapolation time factor ke 30, can be launched PE-RT Ⅱ pipeline at 80 ℃ application of extrapolation time limit in more than 30 years.Push the time limit in more than 30 years.
According to the national standard "plastic piping system with extrapolation method to determine the long-term hydrostatic strength of thermoplastic materials in the form of pipe" (GB/T18252-2008) in the provisions of the PE-RT Ⅱ heat-resistant polyethylene pipe, when 40 ℃ ≤ △ T <50 ℃, extrapolation time
Factor ke for 50, can be launched insulation composite plastic pipe in 70 ℃ application of the push time limit of up to 50 years.
PRODUCT CHARACTERISTICS
● Better low temperature impact resistance, low temperature brittleness temperature -40 ℃, in the -40 ℃ conditions still have better impact resistance.(5℃ for PP-R, -20℃ for PB).
● Can be used in hot water transmission of large diameter plastic pipe, up to DN500.
● Outstanding durability under high temperature conditions, can be used stably for a long time at 85℃ and below;
● Extremely high resistance to stress cracking, to ensure the safety of the piping system;
● Low thermal conductivity, thermal conductivity of less than 1/100 of the steel pipeline, the same use conditions can reduce the thickness of the insulation layer.(PE-RTII thermal conductivity of 0.42 W/mk.
● It can reduce the head loss in the transmission process and save energy.Advantages of the product (PE-RTI pipe inner wall of the Williams coefficient of about 150, while the general theory of steel pipeline value of 110-130, the company's experimental pipeline testing between 115-125.)
● Easy to connect, can take the hot melt and electric melt connection, construction is simple, maintenance is convenient, construction cost is low.
● Can be equipped with alarm wires according to customer requirements.
● We can make double working pipes for supply and return water with one type of insulated pipe, which saves cost and space.
PRODUCT ADVANTAGE
We are one of the important compilers of the group standard "Technical Standard for Direct Buried Thermal Insulation Plastic Pipes for Heat Supply in Towns and Cities", and we know more about the design and manufacture of thermal insulation plastic pipes.
PE-RTII type plastic-covered prefabricated polyurethane hot water insulation pipe and pipe fittings specifications | |||||
Nominal Outside Diameter | Working tube wall thickness mm | Minimum insulation thickness | |||
(mm) | S8/SDR17 | S63/SDR136 | S5/SDR11 | S4/5DR9 | (mm) |
25 | - | - | 2.3 | 2.8 | 15 |
32 | - | - | 2.9 | 3.6 | |
40 | - | - | 3.7 | 4.5 | |
50 | - | - | 4.6 | 5.6 | |
63 | - | - | 5.8 | 7.1 | |
75 | - | - | 6.8 | 8.4 | 20 |
90 | 5.4 | 6.7 | 8.2 | 10.1 | |
110 | 6.6 | 8.1 | 10.0 | 12.3 | |
125 | 7.4 | 9.2 | 11.4 | 14.0 | 25 |
140 | 8.3 | 10.3 | 12.7 | 15.7 | |
160 | 9.5 | 11.8 | 14.6 | 17.9 | |
180 | 10.7 | 13.3 | 16.4 | 20.1 | 30 |
200 | 11.9 | 14.7 | 18.2 | 22.4 | |
225 | 13.4 | 16.6 | 20.5 | 25.2 | |
250 | 14.8 | 18.4 | 22.7 | 27.9 | 35 |
280 | 16.6 | 20.6 | 25.4 | 31.3 | |
315 | 18.7 | 23.2 | 28.6 | 35.2 | 40 |
355 | 21.1 | 26.1 | 32.2 | 39.7 | |
| *These and other specifications can be customized to meet customer needs. | |||||
Applicable environment | ||||||||
Specification Series | Operating conditions (design temperature 85℃, design pressure 0.8MPa) | Design Requirements | ||||||
Underfloor heating | Underfloor heating | domestic hot water | Radiator heating | Radiator heating | ||||
temperature of the body of water45℃ | temperature of the body of water60℃ | temperature of the body of water70℃ | Design water temperature 75℃ | Design water temperature 85℃ | ||||
S4/SDR9 | 1.3 | 0.9 | 0.9 | 0.9 | 0.7 | maximum permissible | ||
S5/SDR11 | 1 | 0.7 | 0.7 | 0.7 | 0.6 | |||
S63 SDR13.6 | 0.8 | 0.6 | 0.5 | 0.5 | 0.5 | |||
S8/SDR17 | 0.6 | 0.4 | 0.4 | 0.4 | 0.4 | |||
- | 5.11 | 3.6 | 3.72 | 3.46 | 2.85 | design stress | ||
Previous Page
Related Product
Prefabricated Directly Buried Hot Water Insulation Pipe
Prefabricated insulation elbow
Prefabricated insulation across three
Consult Now
If you are interested in our products, please leave your email, we will contact you as soon as possible, thank you!
Add: No.9,No.2 Road, North District, Jinghai Economic Development Zone, Tianjin, China
Tel: 15620608007 E-mail: sale@tdl-pipe.com