Composite Metal Reinforced Spirally Corrugated Plastic Pipes

Composite Metal Reinforced Spirally Corrugated Plastic Pipes System 1

Composite Metal Reinforced Spirally Corrugated Plastic Pipes System 2

Composite Metal Reinforced Spirally Corrugated Plastic Pipes System 3

Composite Metal Reinforced Spirally Corrugated Plastic Pipes System 4

Composite Metal Reinforced Spirally Corrugated Plastic Pipes

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Metal reinforced polyethylene（PE）spirally corrugated pipe is a new kind of double-wall spirally corrugated pipe. The HDPE is used as basic material, and the steel strap spiraled as the supporting part which is spiraled to corrugated wall structure.

Material

The stuffing material of steel reinforced HDPE pipe and fitting is PE 80 （piping class）, and we use high quality low-carbon steel wire as the reinforcing part of the pipe and Q235 steel sheet for fittings.

Characteristics of PE 80(piping class) material

Characteristics	Test Standard	Unit	Result
Melt Flow Index(5Kg,190℃)	ASTM D 1238	G/10min	0.56
Density	ASTM D 792	G/cm³	0.954
Tensile Yield Strength	ASTM D 638	Kg/cm²	230
Tensile Fracture Strength	ASTM D 638	Kg/cm²	370
Tensile&Elongation Ratio	ASTM D 638	%	≥600
Brittleness Tempreature	ASTM D 746	℃	≤-70
Linear Expansion Coefficient	DIN 53752	K^-1	1.3x10^-4
ESCR (F50)	ASTM D 1689	HR	＞2000
Thermal Stability	ISO 10837	min	＞20
Grade	ASTM D 4131(B)		PE 80
Long-term Hydro Static Strength	ISO 9080	MPa	9.33
Short-term Hydro Static Strength	ASTM D 4131	HR	＞165

The characteristic of steel wire and sheet

Characteristics	Test Standard		Unit	Result
Steel wire
Tensile strength		GB/T 343-1994	MPa	400-500
Tensile&Elongation Ratio		GB/T 343-1994	%	12
Steel sheet
Tensile strength	GB/T 709-1988		MPa	200
Tensile&Elongation Ratio	GB/T 709-1988		%	10

Characteristics

Because of the reasonable design and the advanced production technology, the Metal reinforced polyethylene（PE）spirally corrugated pipe possesses many advantages, such as high ring stiffness, resistance to corrosion and abrasion, light weight, convenient construction and installation etc..

It is a new kind of pollution-free plastic pipe which recommended by the Ministry of Construction. The features follows:

1 For the high elastic modulus of corrugated steel strip, the pipe possesses high ring stiffness.

Metal reinforced polyethylene（PE）spirally corrugated pipe makes use of the special corrugated steel as supporting structure. Because of steel’s high elastic modulus and pipe cross-section’s high moment of inertia, there are 4 ring stiffness classes for the pipe: SN8, SN10, SN12.5, and SN16. Its high ring stiffness breaks the limit that the highest ring stiffness of plastic pipe can only reach the SN8. It makes plastic pipe can satisfy various engineering requirements.

2 The HDPE materials is very stable is chemical reaction, the pipe can resist corrosion and abrasion, and has a long service life.

The steel is completely covered by HDPE, so only the HDPE is exposed to the liquid and the soil. HDPE is a kind of crystal Non-polar material, it is very stable and has no electric-corrosion. Pipe resists corrosion and abrasion, has a long service life.

3 Smooth inter wall, the transportation capability of the pipe is high

The inner wall surface of Metal reinforced polyethylene（PE）spirally corrugated pipe is smoother than concrete pipe. So the transportation capability of the pipe is obviously higher than that of concrete pipe under the same condition.

4 Hollow structure, light weight, convenient construction and installation

With the corrugated steel strip as supporting structure, it needs fewer raw materials than other plastic pipes. Metal reinforced polyethylene（PE）spirally corrugated pipe is light. It can be connected by many kinds of method, for example, electric melting belt; the transport and installation are convenient and simple.

5 HDPE and adhesive resin are combined with the steel strip closely in molten state.

As bond between HDPE and steel, there is a layer of adhesive resin which the steel strip’s surface coats with. To control the optimum temperature, pressure and time can ensure that HDPE and steel compound closely. It prevents the steel strip being rusty.

6 Flexible pipe, joint steady, resist to unequal settlement

Metal reinforced polyethylene（PE）spirally corrugated pipe possesses the characteristic of both rigidity and flexibility, when under pressure, the pipe and backfill soil can resist to external load and reasonable uneven settlements of soil.

Combined with the advantages of the electric-melting belt welding method and the patented technology of welding, it can ensure the welding quality be safety.

Specification

specification	minimum mean inside diameter （mm）	minimum inner wall thickness（mm）	minimum multilayer wall thickness （mm）	Maximum thread pitch（mm）
300	294	2.5	4.0	55
400	392	3.0	4.5	65
500	490	3.5	5.0	75
600	588	4.0	6.0	85
700	673	4.0	6.0	110
800	785	4.5	6.5	120
900	885	5.0	7.0	135
1000	985	5.0	7.0	150
1100	1085	5.0	7.0	165
1200	1185	5.0	7.0	180
1300	1285	5.0	7.0	190
1400	1385	5.0	7.0	200
1500	1485	5.0	7.0	210
1600	1585	5.0	7.0	210
1800	1785	5.0	7.0	210
2000	1985
2200	2185

Application

The 12th China National Games Projects

The 12th National Games of the People's Republic of China was held in Liaoning province in 2013. Liaoning was the 6th provincial level host of the games, following Beijing, Shanghai, Guangdong, Jiangsu and Shandong.

HTIDC won the bidding of drainage pipline projects of the 12th National Games in Shenyang in 2012.

Q: Are composite pipes suitable for use in wastewater pumping stations?: Yes, composite pipes are suitable for use in wastewater pumping stations. Composite pipes are highly resistant to corrosion and chemical attacks, which makes them ideal for handling the corrosive nature of wastewater. They are also lightweight and easy to install, reducing labor and transportation costs. Additionally, composite pipes have a smooth interior surface that minimizes friction and prevents clogging, ensuring efficient wastewater flow in pumping stations.

Q: Can composite pipes be used for underground gas storage?: Yes, composite pipes can be used for underground gas storage. Composite pipes are known for their high strength, corrosion resistance, and durability, making them suitable for various applications, including underground gas storage. These pipes are designed to withstand high pressures and harsh underground conditions, ensuring the safe and efficient storage of gas.

Q: Are composite pipes suitable for shipbuilding?: Yes, composite pipes are suitable for shipbuilding. They offer several advantages such as being lightweight, corrosion-resistant, and having high strength-to-weight ratio. Additionally, composite pipes can withstand harsh marine environments and are easier to install, making them a viable option for shipbuilding applications.

Q: What is the plastic steel composite pipe?: The plastic lining composite pipe in pipe wall, according to the requirements of the transmission medium with polyethylene (PE), heat-resistant polyethylene (PE-RT) crosslinked polyethylene (PE-X) thermoplastic plastic tube, therefore has superiority of steel pipe and plastic pipe.Plastic coating steel pipe to pipe material, plastic powder coating material, the surface coated with a layer of plastic melt layer, the outer surface of the molten coating on a plastic layer or other material coating of steel plastic composite products in the. According to the internal coating material, the material is divided into two kinds, one is polyethylene coated steel pipe. The other is epoxy resin coated steel pipe.

Q: Are composite pipes resistant to biological growth?: Yes, composite pipes are resistant to biological growth. The materials used in composite pipes, such as fiberglass or carbon fiber, are not susceptible to biological growth. Additionally, composite pipes are typically designed with smooth and non-porous surfaces, which makes it difficult for bacteria or other organisms to adhere and grow on them.

Q: How do composite pipes handle water hammer?: Composite pipes are highly resistant to water hammer due to their unique construction. The combination of materials, such as fiberglass and plastic, offers excellent flexibility and elasticity, allowing the pipe to absorb and dissipate the pressure waves caused by water hammer. This reduces the risk of damage to the pipe, fittings, and other components, making composite pipes an ideal choice for minimizing the impact of water hammer in plumbing systems.

Q: Can composite pipes be used for chemical injection systems?: Yes, composite pipes can be used for chemical injection systems. Composite pipes are highly resistant to corrosion and chemical degradation, making them suitable for handling various chemicals in injection systems. They also offer lightweight and flexible properties, allowing for easy installation and maintenance. Additionally, composite pipes have excellent pressure and temperature resistance, ensuring the safe and reliable operation of chemical injection systems.

Q: Can composite pipes be recycled?: Yes, composite pipes can be recycled. They are made from a combination of different materials such as fiber-reinforced polymers, which can be separated and processed for recycling. However, the recycling process may vary depending on the specific composition of the pipes, so it is important to consult with recycling facilities for proper disposal procedures.

Q: How do composite pipes handle aggressive media?: Composite pipes are highly resistant to aggressive media due to their unique construction. They are typically made from a combination of different materials, such as fiberglass or carbon fiber reinforced polymers, which provide exceptional chemical resistance and durability. This makes composite pipes capable of withstanding corrosive substances, acids, and other aggressive media without degradation or damage. Additionally, their non-metallic nature ensures that they are non-reactive to such substances, making them an ideal choice for handling aggressive media in various industrial applications.

Q: How do composite pipes perform in low-temperature environments?: Composite pipes generally perform well in low-temperature environments. The combination of materials used in composite pipes, such as fiberglass and epoxy resin, provides good resistance to temperature extremes. They are able to withstand low temperatures without cracking, becoming brittle, or losing their structural integrity. Additionally, the thermal conductivity of composite pipes is significantly lower than that of metallic pipes, which helps to prevent heat loss in low-temperature environments. Overall, composite pipes are a reliable choice for applications in cold climates or industries requiring low-temperature resistance.

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