China's plastic pipeline has developed rapidly and its quality is constantly improving
At present, a plastic pipe industry dominated by polyvinyl chloride (PVC-U) pipe, polyethylene (PE) pipe and polypropylene (PP-R) pipe has been preliminarily formed
Because of its unique advantages, polyethylene (PE) pipe is widely used in building water supply, building drainage, buried drainage pipe, building heating, gas transmission pipe, electrical and telecommunication protection sleeve, industrial pipe, agricultural pipe and so on
It is mainly used in urban water supply, urban gas supply and farmland irrigation
Raw material + Color Masterbatch & rarr; Mixing & rarr; Vacuum feeding & rarr; Raw material drying → Single screw extruder & rarr; Four color wire extruder & rarr; Basket or spiral mould & rarr; Calibrating sleeve & rarr; Spray vacuum setting box → Spray vacuum setting box → Spray cooling water tank & rarr; Spray cooling water tank & rarr; Ribbon printer & rarr; Crawler Tractor & rarr; Planetary cutting machine & rarr; Pipe stacking rack → Finished product inspection and packaging PE water pipe performance characteristics: 1 Low density, light weight, easy to handle and install; 2
It can resist the corrosion of various chemical media; 3
Excellent hydraulic performance, and its friction coefficient is only 0
009; 4
Long service life, up to more than 50 years; 5
Reliable connection; 6
High toughness and good seismic performance; 7
Good resistance to slow crack growth (SCG) and rapid crack growth (RCP) Several precautions for PE pipe construction (1) PE pipe has serious thermal expansion and cold contraction, so PE pipe should be constructed and used in an environment with little change in temperature difference
(2) When the buried depth of PE pipe is lower than the bottom surface of the building foundation, the pipe shall not be set within the range of foundation diffusion angle compression under the building foundation (3) In the area where the groundwater level is higher than the elevation of the excavated trench bottom, the groundwater level drops to 0
3m ~ 0
5m below the nearest point of the trench bottom
(4) During pipe trench excavation, the excavation depth shall be strictly controlled and the undisturbed soil at the bottom of the base shall not be disturbed
In case of over excavation and disturbance, the natural graded sand and stone with particle size of 0
1M ~ 0
5m shall be replaced, leveled and compacted (5) The PE pipeline foundation adopts gravel foundation instead of concrete foundation, with a thickness of 0
05 M ~ 20 m, depending on the geological conditions (6) in the process of pipe laying, the pipe laying shall be carried out manually or with a crane
When the crane lays the pipe, the two ends of the pipe shall be tied with non-metallic ropes at a distance of 1 / 4 from the pipe orifice
Through core hoisting is strictly prohibited
(8) The part above 0
7m above the pipe top shall be backfilled by machinery
The backfilling below the pipe top must be backfilled from both sides of the pipe at the same time and compacted, otherwise it is easy to cause uneven compression of the PE pipe, resulting in deformation and displacement of the PE pipe
Other backfilling shall be carried out in accordance with the specifications (9) The pipeline is connected to the inspection well
In the original construction scheme, the pipe orifice is retracted into the inner wall of the inspection well by 0
3 m ~ 0
5 m and painted with mortar; Horn & rdquo;, The surrounding area is filled with mortar and then bricks are built, but the closed water test can not meet the requirements
After inspection, the following problems exist: ① the inspection well is propped and cracked by the thermal expansion and cold contraction of PE pipe, resulting in water leakage of the inspection well
② The inspection well was not supported and cracked, but the sealing at the connection between the pipeline and the inspection well failed to meet the requirements, resulting in water seepage and leakage Application of PE water supply pipe: 1
Urban water supply: PE pipe head has comprehensive advantages such as safety, sanitation and convenient construction, and has become an ideal pipe for urban water supply
3
Replacement of cement pipe, cast iron pipe and steel pipe: for the old pipe re selection of the original laid cement pipe and cast iron pipe in the city, the PE pipe can be directly inserted into the old pipe for replacement without large-area excavation
The project cost is low and the construction time is short
It is especially suitable for the pipeline re selection in the old urban area
4
Municipal trenchless Engineering: at present, with the development of the city, trenchless technology is widely used in various construction
At present, PE pipe is more popular for pipe jacking (drag pipe and traction pipe) commonly used in trenchless factories
Considering its toughness and price advantages, PE pipe will be further developed in the field of trenchless
The manufacturer of Luoyang Guorun New Material Technology Co
, Ltd
delivers goods directly, with good quality, low price, new material production, non-toxic and pollution-free, long service life and large quantity of customers
Welcome to the factory, guarantee quality and quantity, and receive customers at home and abroad at any time in 24 hours! The company produces conventional model & phi; 32,Φ 40,Φ 50,Φ 63,Φ 75,Φ 90,Φ 110,Φ 125,Φ 140,Φ 160,Φ 180,Φ 225,Φ 200,Φ 250,Φ 280,Φ 315,,Φ 355,Φ 400,Φ 450,Φ 500,Φ 560,Φ 630,Φ 710mm。 Factory consultation - Manager Sun QQ -- 2021704852 online consultation: http://www
ffgdw
com/ http://www
lynmgd
com/  ; Visit address: Airport Industrial Park, Mengjin County, Luoyang City, Henan Province, striving for integrity and winning customers with high quality Move customers with integrity and win people's hearts with quality Character determines products, quality determines quality, and details determine success or failure