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Qingdao Precision Machine Co., Ltd.
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LARGE-DIAMETER CARAT PIPE PRODUCTION LINE

LARGE-DIAMETER CARAT PIPE PRODUCTION LINE  , TREASURE HOUSE EXTRUDER  , CARAT PIPE EXTRUSION MACHINE  , HDPE CARAT PIPE MACHINERY  , HDPE CARAT BURIED DRAINAGE PIPE EXTRUSION LINE
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Description

Large-diameter carat pipe production line
On the basis of fully absorbing German technology, our company has developed a new generation of multi-layer co-extruded large-diameter HDPE/PP hot-wound structural wall pipe (carat pipe) production line according to domestic raw materials and actual market conditions, which is mainly used to produce no internal pressure Sewage and drainage carat pipes have the advantages of low energy consumption, easy operation, high pipe ring stiffness and light weight. Provide a complete set of equipment, installation, debugging, training and other services for the production of hot-wound structural wall pipes.



Device parameters

· Pipe diameter: DN/ID 200-DN/ID 4000mm

· Output: 800-1400kg/h (customized according to customer requirements)

· Raw materials used: HDPE, PP, PP-HM

· Pipe wall structure: PR, VW, OP, CPR, SQ

· Pipe ring stiffness: SN2 to SN32 according to standard GB/T 19472.2-2017

product details

1. Main advantages of continuous winding carat tube production equipment:

1. There is no need to buy different specifications of molds-low investment cost and less space occupied
2. The forming mold does not require natural gas baking-energy saving
3. There is no need to change molds-workers are saving and efficient
4. Continuous production-high efficiency
5. The length of the pipe is 1 to 17.5 meters-low transportation cost
6. Socket cutting is carried out under party temperature-low shrinkage rate and good welding and sealing

The device has applied for intellectual property protection. The product calibers are 300-3500mm in diameter, and the quality meets the national GB/T19472.2-2004 standards. Continuous production equipment for carat tubes, with no fire baking mold, dynamic demoulding, continuous production, one-time forming of sockets, and production length It can be customized according to the length of the transport vehicle and many other advantages. The advent of this equipment will fill the gap in the international market.


Second, the performance characteristics of the drawing tube:
1. Excellent physical properties. High-density polyethylene has good rigidity, strength, flexibility and creep resistance, and higher-density polyethylene has the characteristics of excellent hot-melt connection performance, which is conducive to the installation of plastic pipes.
2. Corrosion resistance and long service life. In the coastal areas of my country, the groundwater level is high and the soil humidity is high. PE pipes can withstand the erosion of a variety of chemical media and do not need anti-corrosion treatment. In addition, it will not promote the growth of algae, bacteria or fungi, and has a lifespan of 100 years.
3. The hot-winding molding has a high quality weld seam. The flat material tape and the covering material tape in the molten state extruded from the die of the extruder are evenly wound on the heated roller mold according to the predetermined position to ensure the structure The quality of the wall pipe welding seam, the pipe material is cooled by air, and the material is cooled evenly. Especially in the structural design, the welding seam of the flat strip is covered by the strip-coated support tube, which improves the overall resistance to external pressure of the product. The horizontal layer of the pipe and the reinforcing structure layer are welded in a molten state, the weld quality is high, there is no internal stress, and the overall strength of the pipe is high.
4. Ring flexibility
Plastic pipes are flexible pipes. When subjected to external pressure, the load-bearing mechanisms of flexible pipes and rigid pipes are completely different. Before the flexible pipe is damaged under pressure, it can have a large deformation, while the rigid pipe cannot have a large deformation before it is damaged under the external pressure. When the rigid pipe is subjected to external pressure, the load is completely transferred to the bottom pipe bed through the pipe wall, and a bending moment is generated in the pipe wall. As the diameter of the pipe increases, the bending moment and stress of the pipe wall increase sharply, so the large diameter Concrete drainage pipes often need to be reinforced: while the flexible pipe is deformed before being damaged under pressure — lateral expansion, the backfill soil around the pipe can prevent the deformation and expansion of the flexible pipe, and the external pressure load is transmitted and distributed to Go to the surrounding backfill. Therefore, under the same external pressure load, the stress in the wall of the flexible pipe is smaller, it and the surrounding backfill soil share the load, and the pipe soil acts together. Therefore, the plastic buried drainage pipe does not need to have the same strength and rigidity as the rigid concrete pipe. With a reasonable rigidity, it can fully meet the requirements of use. This has been proved by the application practice of European developed countries.
4. Good toughness and flexibility.
PE pipe is a kind of high-toughness pipe with a breaking elongation of more than 500%. It has strong adaptability to uneven settlement and dislocation of the pipe foundation and good seismic resistance. Therefore, it is most suitable for earthquake-risk areas and practice all over the world. It is proved that PE pipe is the pipe with the best shock resistance. It is reported that in the Kobe earthquake in Japan in 1995, PE pipes and water supply pipes were the only pipes that were not damaged. In addition, the flexibility of the PE pipe is that the PE pipe can be coiled (especially the PE pipe with a small diameter), which reduces a large number of connecting pipes. The direction of the PE pipe is easy to change according to the requirements of the construction method. During construction, obstacles can be bypassed within the allowable bending radius of the pipe to reduce the difficulty of construction.
5. Large circulation capacity, economically cost-effective. The inner wall of the PE pipe is smooth and does not scale. The equivalent absolute roughness ratio of the inner surface of the PE pipe is 1/20 of that of the steel pipe. The flow capacity of the PE pipe under the same pipe diameter, the same length and the same pressure is about 30% larger than that of the steel pipe, so the economic advantage is obvious. Compared with metal pipes, PE pipes can reduce the project investment by about one-third (the cost of large pipes with a diameter of 200 mm or more is slightly higher), and the small diameter pipes that can be coiled can further reduce the project cost.
6. Excellent installation performance. The pipeline connection adopts the pre-embedded electric fuse in the socket with the same material socket electric fusion connection technology, and the connection quality is high. It can be 100% leak-free, ensuring the same life of the pipeline system and the safety of operation. At the same time, because the product is lighter than other pipes under the same application conditions, it is easy to transport, convenient and quick to construct, and can reduce construction costs. In the scope of application, the pipe can be directly applied without the concrete cushion and concrete pipe foundation trenches. Basically, it is possible to excavate, pipe down, and backfill at the same time, simplifying the construction procedure and shortening the construction period. In the acceptance of the project, the closed-air inspection is used instead of the closed-water test, which not only speeds up the acceptance, but also saves the complicated work and a large amount of test costs in the closed-water test.
7. Good airtightness. The PE pipe itself adopts welding connection (hot melt or electric fusion), which essentially guarantees the identity of the interface material, structure and the pipe body, and realizes the integration of the joint and the pipe. The tensile strength and blasting strength of the interface are higher than the pipe body, which can effectively resist the axial stress caused by the internal pressure. Therefore, compared with rubber ring type joints or other mechanical joints, there is no risk of leakage caused by joint distortion, and the sealing performance is very good.
8. Good resistance to stress cracking: PE pipe has low notch sensitivity, high shear strength and anti-marking ability, and outstanding environmental stress resistance.
9. Good low-temperature impact resistance: The low-temperature embrittlement temperature of PE pipe is extremely low, and it can be used safely in the temperature range of -60 degrees Celsius. However, in northern China, when laying polyethylene buried in the field in winter for water supply, it is concluded that it is not suitable for laying and construction below zero because polyethylene pipes are prone to brittle cracks.
10. Good wear resistance. The comparative experiment of the wear resistance of polyethylene pipe and steel pipe shows that its wear resistance is 4 times that of steel pipe.
11. It has good ability to resist 222 scratches. Research has proved that PE pipes of PE grade have better resistance to SCG and scratch resistance. PE100 pipe has better scratch resistance.
12. Good resistance to rapid crack transmission. Cracking means that when the pipeline cracks, the crack propagates at a very fast speed, and the pipeline may be destroyed in an instant, with disastrous consequences. Practice has shown that PE pipes in plastic pipes have stronger resistance to crack transmission than other pipes.
13. Winding pipe materials, high-density polyethylene and polypropylene can be 100% recycled.

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