Introduction to fiberglass sandwiched pipes:

 Fiberglass sandwiched pipes have become a good choice for the chemical industry and drainage projects due to their excellent corrosion resistance, hydraulic characteristics, lightweight and high strength, large flow capacity, easy installation, short construction period, and low overall investment. They possess advantages that other metal pipes do not have, mainly featuring the following characteristics:

1,【Excellent corrosion resistance】 The product uses highly corrosion-resistant resin, possessing excellent mechanical properties and processing characteristics, and can withstand most acids, alkalis, salts, untreated sewage,corrosive soil or groundwater, and the erosion of many chemical substances.

2、【Good heat and cold resistance】 Even at -30℃, it still has good toughness and very high strength, can be used for a long time in the range of -50℃ to 80℃, and can also be used at 110℃ with specially formulated resin.

3,【Good wear resistance】 The wear resistance of fiberglass pipes is very good. Tests have shown: water containing a large amount of mud and sand,was placed in the pipe for rotational wear comparison tests. After 300,000 rotations, the wear depth of the inner wall of the pipe was as follows: steel pipes coated with tar and porcelain oil were 0.53mm; steel pipes treated with surface hardening were 0.48mm; fiberglass pipes were 0.21mm, which indicates that fiberglass pipes have very strong wear resistance.

3. 【Excellent thermal insulation】 Due to the low thermal conductivity of fiberglass products, their thermal insulation performance is particularly good.

4.  【Post-curing anti-fouling resistance】 During use, it does not scale, rust, or get contaminated by marine or sewage microorganisms such as shellfish and bacteria.

5.  【Small specific gravity, lightweight】 The specific gravity of fiberglass sandwiched pipes produced by fiber winding is between 1.65-2.0, only 1/4 of steel, but the circumferential tensile strength of fiberglass pipes is 180-300MPa, and the axial tensile strength is 60-150MPa, similar to alloy steel. Therefore, its specific strength (strength/specific gravity) is 2-3 times that of alloy steel, allowing it to be designed to meet various internal and external pressure requirements according to user needs. For the same pipe diameter, FRPM pipes weigh only 1/2.5 of carbon steel pipes (steel plate rolled pipes), 1/3.5 of cast iron pipes, and about 1/8 of prestressed reinforced concrete pipes, making transportation and installation very convenient.【Few joints, high installation efficiency】 The length of the pipes is generally: 6-12m per piece (special lengths can also be produced according to customer requirements). A single pipe is long,

6.  with fewer joints, thus speeding up the installation, reducing the probability of failure, and improving the overall installation quality of the pipeline.【Good mechanical properties, excellent insulation】 The tensile strength of the pipe is lower than that of steel, higher than that of ductile iron pipes and concrete pipes, while the specific strength is about 3 times that of steel pipes,

7.   10 times that of ductile iron pipes, and 25 times that of concrete pipes. In addition, its thermal conductivity is only 1% of that of steel pipes, providing excellent insulation, suitable for use in areas with dense power transmission and telecommunications lines and high lightning frequency.【Excellent hydraulic performance, energy saving】 Fiberglass sandwiched pipes have a smooth inner surface, suitable for large diameter (≥φ500mm) water supply pipelines, with a small friction coefficient and good hydraulic fluid characteristics, and the larger the diameter, the more obvious the advantages. Conversely, under the same flow conditions, smaller diameter fiberglass sandwiched pipes can be used instead, thus reducing the initial project investment. Compared with other pipe materials, fiberglass sandwiched pipes can greatly reduce head loss during water transport, saving pump power and energy.

8.      【Long service life, safe and reliable】 Fiberglass sandwiched pipes are designed with a high safety factor. According to laboratory simulation tests, the lifespan of general water supply and drainage fiberglass sandwiched pipes can reach over 50 years,which is twice that of steel pipes and concrete pipes. For highly corrosive media, their service life is far superior to that of steel pipes.

9.   【Flexible design, strong product adaptability】 Fiberglass sandwiched pipes can be manufactured in various specifications, pressure ratings, stiffness levels, or other special performance products according to various special user requirements,making them widely applicable.

10. 【Low operation and maintenance costs】 Due to the good corrosion resistance of fiberglass products, there is no need for rust prevention, anti-fouling,insulation, thermal insulation measures, and repairs, and underground pipes do not require cathodic protection, saving a lot of maintenance costs.

11. 【Good overall engineering benefits】 Overall benefits refer to the long-term benefits formed by construction investment, installation and maintenance costs, service life, energy saving, and steel saving. The overall benefits of fiberglass pipes are desirable, especially as the diameter increases,the cost decreases. When further considering that buried pipes can be used for several generations without annual maintenance, their superior overall benefits can be fully realized. Product performance introduction:

12. 【High strength】 Strong resistance to external loads, fiberglass sandwiched pipes can be directly buried under traffic lanes without the need for a concrete protective layer, which can accelerate the construction progress and significantly reduce construction costs, resulting in significant social and economic benefits.【Corrosion resistance】 Specially designed fiberglass sandwiched pipes can resist the erosion of many chemical fluids such as acids, alkalis, salts, untreated sewage, corrosive soil, and groundwater, with a long service life compared to traditional pipes, and a designed service life of over 50 years.

13.  【Flame retardant, good heat and frost resistance】 Fiberglass sandwiched pipes can be used long-term without deformation at temperatures ranging from -20℃ to 100℃.

14.  【Good electrical insulation performance】 No eddy current loss and electrical corrosion, energy-saving, fiberglass pipes below DN200 are suitable for cable laying; large current carrying capacity, low thermal resistance, with no adverse effects on the normal operation of cables.

15.  【阻燃、耐热抗冻性好】 　　玻璃钢夹砂可在—20℃—100℃长期使用而不变形。 　　

16.  【电绝缘性能好】 　　无涡流损和电腐蚀‘节能，DN200以下玻璃钢管适用于电缆敷设；载流量大，热阻小，对电缆的正常运行无任何不利影响。 　　

17.  [Flexible System] The pipe has flexibility, and when paired with flexible joints, it can withstand damage caused by external heavy pressure and foundation settlement.

18.  [High Smoothness] The inner wall of the glass fiber reinforced sand pipe is in direct contact with the mold, resulting in a very smooth surface with no burrs.

19.  [Quick and Convenient Installation] The glass fiber reinforced sand pipe uses a socket connection method, making installation and connection easy; the joints use double O-ring rubber seals to accommodate thermal expansion and contraction.

20.  [Light Weight, Convenient Transportation and Installation] The weight of the glass fiber reinforced sand pipe is only 1/4 that of steel pipes and 1/5 that of concrete. The installation process is simple and convenient, significantly shortening the construction period and reducing installation costs. It also avoids prolonged exposure during road excavation, which can affect urban traffic order.

21.  [Specifications] Inner pipe diameter: DN50mm-DN2000mm Glass fiber reinforced sand pipe [Length] 2m, 4m6m, 12m [Pressure Ratings] 0.2Mpa, 0.6Mpa, 1.0Mpa, 1.6Mpa, 2.5Mpa

High-Density Polyethylene (HDPE) Double-Wall Corrugated Pipe

1.     Abbreviated as PE Corrugated Pipe, HDPE double-wall corrugated pipe is a new type of pipe with an annular structured outer wall and a smooth inner wall, developed successfully in Germany in the early 1980s.After more than a decade of development and improvement, it has evolved from a single variety to a complete product series. The promotion and application of HDPE double-wall corrugated pipes are currently on the rise.

HDPECharacteristics of Pipe Production Process: · Dual machine co-extrusion, dual-layer diversion. Double-wall corrugated pipe (HDPE)Product specifications: DN200mm, DN300mm, DN400mm, DN500mm, DN600mm, DN700mm, DN800, a total of six types. HDPE double-wall corrugated pipe has chemical stability and resistance to environmental stress cracking. The HDPE double-wall corrugated pipe produced from this raw material is classified as a flexible pipe.