What is upvc pipe? We can fully understand the knowledge of upvc pipe from its advantages, disadvantages and specifications, and of course there are some tips to buy and sell, below I will lead you to understand.
UPVC drainage pipe advantages
1, excellent physical and chemical properties, UPVC drainage pipe corrosion resistance, high impact strength, low fluid resistance (compared to the same diameter cast iron pipe flow increased by 30%), aging resistance, long service life, is the ideal material for building drainage, chemical sewage.
2、Lightweight and practical, easy to install. The weight is only 1/7 of the same caliber cast iron pipe, which can greatly accelerate the project progress and reduce the construction cost.
3、Smooth inner wall, smooth drainage water, the pipe is not easy to block. Unique design of inspection port, easy to check the operation, without anything.
4, economic savings, the use of UPVC drainage pipe than the use of the same specifications of cast iron pipe, the comprehensive cost of low maintenance costs.
UPVC drainage pipe disadvantages
1, aging problems, UPVC drainage pipe is easy to aging, especially outdoor exposure to ultraviolet glare, resulting in plastic brittle, aging, service life is greatly reduced to only about 10 years.
2, poor mechanical shock resistance, expansion coefficient; weak pressure-bearing capacity, UPVC drainage pipe pressure-bearing capacity of less than 0. 4Mpa; building fire problems, flame retardant; poor heat resistance, low softening temperature, low-temperature performance is poor.
3, drainage noise, due to the UPVC drainage pipe wall is relatively smooth, the water flow is not easy to form a water film along the wall of the pipe flow, in the pipe is chaotic state hit the pipe wall.
UPVC pipe selection skills
For the most common white UPVC drainage pipe, the color is creamy white and uniform, the inner and outer walls are relatively smooth but a little lubricated feeling for good, while the color of the lesser UPVC drainage pipe is not snow-white snow-white, it is somewhat yellowish, and harder, some colors are uneven, some outer walls are particularly smooth, while the inner walls appear rough, sometimes with pinpricks or small holes.
The toughness of UPVC drainage pipe is a very critical indicator. Toughness of the tube when we saw it into a narrow strip, try to fold 180 °, if a break, indicating that the toughness is very poor, brittle; if it is difficult to break, indicating that there is toughness, and the more effort needed to break the tube in the fold, the strength is very good, toughness is generally good. Finally, you can observe the stubble (except for the stubble of the saw), the more delicate the stubble, the better the homogenization, strength and toughness of the pipe.
UPVC drainage pipe impact resistance, but also a simple way to do macroscopic general judgment. You can choose a room temperature close to 20 ℃ environment, will be sawed into 200mm long pipe section (for 110mm pipe), with a hammer pounding, good pipe, with human power is difficult to break at once. (The thicker the pipe, the greater the load-bearing capacity).
Conditional users, the pipe can be made into a dumbbell type, parallel narrow at 6mm wide, 5mm / min pull speed to do tensile strength, more than 10MPa for qualified. The longer the stretch, the better the pipe.
Users choose UPVC drainage pipe, should go to a reputable distribution point to choose the products of large and well-known enterprises, or to the direct sales of well-known brands to buy. After our preliminary investigation, the roadside small distribution points selling miscellaneous UPVC pipe qualified rate of less than 20%.
upvc pipe cleaning and maintenance
1, upvc pipe pipeline should be concealed with pressure, generally should be working pressure for pressure-holding pressure, to be concealed layer to reach the permitted strength before withdrawing pressure.
2, because upvc pipe texture is soft, their own mechanical strength is not high steel, so to prevent physical damage, after the installation of the pipe is strictly prohibited to knock, touch, smash, pressure, before concealment should do a good job of covering protective measures.
3, winter low temperature period, such as no good insulation measures, should be timely upvc pipe inside the water blowing clean, to prevent the pipe from freezing.
