one . The flow resistance is small, and the roughness is 0.008-0.009 Water delivery capacity is higher than that of cast iron pipe 20% , concrete pipe raised 40%
two High tensile strength, twenty-three ℃ The tensile strength shall not be less than 45MPA
three Good compression resistance 1/2 No crack, good mechanical performance
four . Light weight, convenient shipment, PVC —U The specific gravity of pipe is only that of steel cast iron pipe 1/5 , concrete 1/2 ， Pipe Major spheroidal graphite with the same specification and length
Cast iron pipe 1/4 , concrete 1/10 Low transportation cost 1/2-1/3 。
five The pipes are sanitary and harmless, without secondary pollution flow, and will not cause secondary pollution to the water quality; The service life of irrigation pipe is not low under stable temperature and pressure
to fifty Years.
Mainly based on PVC Resin is the main raw material, which is polychlorinated Vinyl resin After chlorination, its chlorine content is about 65% It has good high temperature resistance, and the pipe has other The materials and products have incomparable impact resistance and electrical insulation properties, as well as excellent physical, mechanical and chemical properties. PVC-C high pressure power cable The protective sleeve has the characteristics of corrosion resistance, high temperature resistance, slow aging, high compressive strength, good flame retardancy, strong high-voltage insulation, good wear resistance, small friction coefficient of inner wall, purity, light weight, convenient construction, low project cost, long service life, etc.
PVC The communication tube has the following features: one High strength: it can be pressed to the outer diameter of the pipe under external load 1/2 Without fracture; Avoid damage caused by pressure; two Corrosion resistance: it is not corroded by various acid, alkali, salt and other chemical solvents, which can extend the service life; three . Flame retardant, high temperature resistant: self nonflammable, self extinguishing after ignition, basically no heat transfer, Vicat softening point reaches ninety-three ℃, meeting the needs of power cable sleeves; four Good electrical insulation: large surface resistance coefficient, non-conductive; five Light weight: similar cement pressure pipe 1/4 , steel pipe 1/6 Convenient transportation; six The inner wall friction coefficient is small, smooth, and easy to lay power cables; seven , convenient construction, etc.
