In terms of price, PB pipes have significant economic benefits: low cost and low investment. Compared with metal pipes, it can reduce project investment by about 1/3.
Making PB pipe the preferred material for engineering projects.
So where are PB tubes generally used?
What are the specifications of PB tubes?
Next, the editor will introduce it to you.
What are the characteristics of PB pipes? 1. Light weight and good flexibility. The weight of PB pipes is 1/20 of galvanized steel pipes. It is easy to handle and the material is soft. The minimum bending radius is 6D (D: pipe outer diameter). 2. Good durability.
Non-toxic and harmless: Because it is a high-density polymer with stable molecular structure and a service life of 50-100 years, it is non-toxic and harmless and does not cause chemical reactions.
3. Resistant to ultraviolet rays and corrosion: PB tubes are resistant to ultraviolet rays and microbial damage, and can prevent the water stored in them from deteriorating for a long time.
4. Good anti-freeze and heat resistance: at -20°C, it has good low-temperature impact resistance. The pipe will not freeze and crack. After thawing, the pipe can return to its original shape and can withstand high temperatures below 100°C.
5. The pipe wall is smooth and does not scale: compared with galvanized pipes, the water flow rate can be increased by 30%.
6. Good thermal elasticity and advanced connection method: The thermal elasticity of PB pipe is about 1/60 of that of metal pipe, and the expansion coefficient is similar to that of concrete.
The connection method is an integrated hot-melt connection, so when buried, pipe movement and joint leakage caused by temperature changes and water hammer can be avoided.
What areas are PB pipes used in? 1. Water supply (sanitary pipes) and hot water pipes: In terms of tap water and hot water pipes, PB pipes are recognized as non-toxic, odorless and the most durable pipe materials.
2. Heating pipes: Because of their good insulation, construction and permanent durability, they are most suitable for use in building connections and underfloor heating piping systems.
3. Industrial pipes for air conditioning: Because of their strong corrosion resistance (acid, alkali and salt resistance), non-toxic and tasteless, they are the best pipes for chemical engineering, food processing engineering, general hospitals, industrial water, etc.
Due to its high pressure resistance, it is most suitable for use in air conditioning duct systems.
4. Agricultural and horticultural pipes: Because of their corrosion resistance, flexibility and strong UV blocking properties, they are used for irrigation, golf course sprinklers, underground heating on farms and spraying pipes.
5. Snow removal pipe: It has a permanent lifespan and strong impact resistance, and is especially suitable for snow removal pipes on roads, parking lots and playgrounds.
Make pipes with good impact resistance.
6. Hot spring pipe: It has outstanding heat and pressure resistance and will not generate rust and scale. It has unparalleled effect as a hot spring pipe.
What are the specifications of PB pipes? The specifications of PB pipes are divided into six pipe series: S3.2, S4, S5, S6.3, S8 and S10 according to the size.
The polybutylene (PB) piping system complies with the regulations of GB/T18991-2003, and four application grades 1, 2, 4, 5 and 5 are selected according to the use conditions. See Table 2 below. Each grade corresponds to a specific application range.
and a service life of 50 years. In practical applications, different design pressures of 0.4MPa, 0.6MPa, 0.8MPa, and 1.0MPa should also be considered.
The main factors that determine the quality of pipes are the pressure-bearing capacity of the pipe and the thickness of the pipe wall.
The thickness of tubes produced by different manufacturers is different.
Level 1 PB pipes have a service life of 49 years at TD℃60 and 1 year at Tmax℃80, and the hot water supply range is 60 degrees.
It can ensure safe and reliable operation for 50 years under three different conditions: medium 20oC, system pressure 16bar, medium 70oC, system pressure 10bar, medium 95oC, system pressure 6bar, with a safety factor of 1.5.