Rigid PVC pipe referred to as PVC-U tube, as a new type of building materials, more and more attention and attention. It is light, smooth, beautiful, water resistance is small, with a flexible, easy to install time and effort, very much by the design, construction units and users favor. So the use of PVC-U tube instead of the traditional cast iron drainage pipe, is an irreversible trend in the country quickly popularized. At present, most of the pipes used for tap water transportation, domestic sewage discharge, and construction cables are rigid PVC pipes.
Compared with steel, iron, concrete, ceramic pipe, PVC pipe PVC-U has the following advantages:
Light weight, the relative density of rigid PVC pipe is 1.43, only the same size steel weight of 1/6, 1t plastic pipe can replace 10 ~ 13 t cast iron pipe, easy transportation and installation, while reducing transportation costs 1/2 -1/3.
Easy to connect, easy to install. As the PVC-U pipe light, easy to connect, and have a certain toughness, so easy to install, compared with other pipes, piping system more complex, PVC-U tube more prominent advantages.
Corrosion resistance and flame resistance.
Electrical insulation performance, the volume resistance of about 1 × 10 ~ 3 × 10 nNaN, breakdown voltage of 23 ~ 28Kv / mm.
Friction resistance is small. Tube fluid velocity is about 30% higher than the steel pipe, and the scale is small, no rust, long-term transport of water and other fluids, flow rate and flow can remain unchanged; and iron pipe will rust, scaling, Tube flow rate and flow are reduced.
Thermal conductivity is small, good weather resistance, good insulation properties.
Easy to color, no paint, and easy to make a variety of logo color of the pipe, the production of low energy consumption, only 18.3% of cast iron pipe.
Long service life, the traditional pipe life of 20-30 years, PVC-U pipe at rated temperature, pressure life of not less than 50 years, and maintenance costs only cast iron pipe or concrete pipe 30%.
PVC-U: non-plastic PVC pipe is the most common pipe processing industry in a pipe. The molecular structure of the PVC pipe is a long chain structure that is arranged in the PVC pipe, which is the most common in the PVC pipe. In general, PVC molecules do not show a clear direction, that is, its axial and radial strength is consistent.