What are the advantages of PSP steel plastic composite pipe?

Advantages of PSP steel-plastic composite pipe:

1. Excellent mechanical strength, high compressive strength and stable performance.

2. The linear expansion coefficient is small, and the surface installation is not deformed.

3. Excellent corrosion resistance and small resistance coefficient.

4. Easy installation and long service life, up to 50 years.

1. The complete steel pipe layer is the main pressure-bearing layer of the pipe body, so the pressure-bearing capacity of the pipe is not affected by the change of the performance of the plastic layer;

2. Compared with plastic pipes, it has higher strength, rigidity and impact resistance, and has low expansion coefficient and creep resistance similar to steel pipes, and tensile resistance.

The strength is 7-8 times that of pure plastic pipes, and the buried pipes can withstand the external pressure that greatly exceeds that of pure plastic pipes;

3. It has self-tracerability. Since the middle steel pipe layer is a complete confined layer, it can be traced with a magnetic metal detector without the need to bury a heel.

traces or protective markers, which can avoid excavation damage and provide great convenience for emergency repair and maintenance;

4. Strong anti-corrosion ability. Both internal and external plastic are PPR

Insoluble in any solvent, chemically stable. It can resist the corrosion of various acids, alkalis and salt solutions at room temperature.

There is no need to take additional anti-corrosion measures for the pipe when the pipeline is buried and installed, and the installation of GB50268 requires only local anti-corrosion of the flange joint.

Corrosion measures, saving a lot of installation and construction time and costs.

5. The flaring and double hot melt and press connection fittings correspond to the size and diameter respectively, with excellent sealing performance, pull-out resistance, easy installation, and at the same time.

Adaptive ability to prepare pipes and pipelines for various deformations;

6. It has a certain flexibility and can be bent, so that the adaptability of decoration, transportation and installation and the reliability of operation are higher. Underground installation is available.

It can withstand sudden shock loads caused by settlement, slippage, vehicles, etc. Fixed-length (12m) single steel-plastic composite pressure pipe can be bent in one direction.

25°, saving the amount of small angle steering elbow;

7. The roughness of the inner wall of the pipe is smooth, the fluid resistance is small, and the scale is not scaling, and the head loss is lower than that of the metal pipe under the same diameter and pressure.

30% lower loss for larger transmission traffic. The structure is rigid and flexible, which quickly eliminates pressure surges within the piping system and does not produce water.

hammer noise; 8. The pipe product standard requires the composite GB T 17129 standard, which is hygienic and non-toxic, and can be used for direct drinking water transportation;

9. The linear expansion coefficient is low. The linear expansion coefficient of the pipe is x 10-5, which is 1 10 1 12 of pure plastic pipes

10. Long service life. Within the normal temperature and pressure range, it can be used for 50 years;

11. Good insulation. The breakdown voltage of polyethylene material is greater than 20kV mm, and the plastic thickness of the steel-plastic composite pressure pipe is used for cable protection.

The casing and the middle steel pipe have strength, and the inner and outer layers have good insulation. The high-precision sealing process is adopted to make the end face of the steel-plastic composite pressure pipe completely poly.

Wrapped in ethylene plastic, the bearing layer of the steel belt in the middle is not in contact with air and other media, so that the overall anti-corrosion effect is not affected by the end face.

The insulating properties of the pipe are equivalent to those of pure plastic pipes. For urban power grids, the electrical insulation performance of PSP protective sleeves is greater than that of power cables.

performance, it will be safer to use.

The specifications of general household water pipes include DN15 (4 pipes), DN20 (6 pipes), DN25 (1 inch pipe), DN32 (1 inch 2 pipes), DN40 (1 inch and a half pipe), DN50 (2 inch pipes), DN65 (2 inch and a half pipes), DN80 (3 inch pipes), DN100 (4 inch pipes), DN125 (5 inch pipes), DN150 (6 inch pipes), DN200 (8 inch pipes), DN250 (10 inch pipes), etc.

Usually the 4 subdivision is in inches, so the 4 subdivision is 1 2 inches (4 8 1 2), and one inch is 25 4mm, so the inner diameter of the 4 subdivision is 25 4 2 12 7mm, and this is the inner diameter of the DN15 water pipe.

1. PSP steel-plastic pipe hot melt connection: PSP steel-plastic composite pressure pipe uses double hot melt connection, and the double hot melt pipe fittings implement the industry standard CJ T 237-2006 standard.

The CJ T237-2006 (double hot melt pipe fittings for steel-plastic composite pressure pipes) standard promulgated by the Ministry of Construction of the People's Republic of China is a widely used connection method for PSP steel-plastic composite pipes in the country.

2. PSP steel-plastic pipe flaring (internal expansion) connection: implement the industry standard CJ T 253-2007 "Pipe Fittings for Steel-Plastic Composite Pressure Pipe".

PSP steel-plastic composite pressure pipe with flaring (internal expansion G-type compression) connection, the implementation of the industry standard CJ T 253-2007 standard CJ T 253-2007 issued by the Ministry of Construction of the People's Republic of China CJ T 253-2007 "Steel-plastic composite pressure pipe fittings" is a mechanical metal connection method of PSP steel-plastic composite pipe.

3. PSP steel-plastic pipe clamping connection: PSP steel-plastic pipe implements the industry standard CJ T 253-2007 "Pipe Fittings for Steel-Plastic Composite Pressure Pipe".

PSP steel-plastic composite pressure pipe with flared (internal expansion G-type clamping) connection, in accordance with the industry standard CJ T 253-2007 standard.

There are two connection methods of PSP steel-plastic composite pipe, one is double hot melt connection, and the other is internal expansion flared connection.

1. Double hot melt connection.

Generally, it is used for DN160 or less, and flange connection is used for DN160 or more. It is characterized by all-plastic sealing connection, which avoids the contact between the steel belt and air and water, has a good protection effect on the pipe and water, and the connection is convenient and reliable without leakage.

2. Internal expansion flaring connection.

DN20-DN25 is connected by pressing, DN32-DN63 is connected with thread connection, DN75-DN110 is connected with bolt expansion, DN160-DN200 is connected with flaring, of course, this is also adopted according to the design drawings and the needs of the owner, and some projects above DN63 are connected with flaring.

The internal expansion and flaring connection of PSP steel-plastic composite pipe is characterized by convenient connection, reliable connection, no water leakage, no need to consider the surrounding temperature, and is a bit close to the traditional thread connection. The connection method of plastic-lined steel pipe is threaded, which is the same as the traditional galvanized steel pipe connection.

Steel-plastic composite pipes are divided into two types: plastic lining and plastic coating, if the design is plastic lining, it can be replaced by plastic-coated steel pipes, but if the design is plastic-coated, it cannot be replaced by plastic-lined steel pipes. The general connection method is: PSP steel-plastic composite pipe, the specification is less than 100 mm, and it is threaded; Between one hundred and two hundred is a grooved connection; More than two hundred are flange welding. Sometimes it depends on the pressure requirements.

We are a manufacturer, and we do a flared connection method and an electromagnetic fusion connection method. To be precise, there should be three connection methods: one is double hot melt connection, the national standard CJ T237-2006 uses transition joint connection, one is mechanical flared connection CJ T253-2007, and the other is electromagnetic hot melt, there is no standard yet.

Hubei Dayang Plastic Electromagnetic induction double hot melt connection intelligent connection saves time and labor and is simple and convenient to operate.

Hubei Dayang Plastics**** electromagnetic double hot melting, welding technology is the world's leading.

The specific differences between the two are:

1. There is a difference in structure: the plastic lining process of plastic-lined steel pipe is made of cold drawing, internal hot melt bonding, and a certain thickness of plastic pipe is placed on the inner wall of the steel pipe. The plastic-lined steel pipe is based on galvanized seamless steel pipe and welded steel pipe, and after the welding bars are removed from the inner wall, the food-grade polyethylene (PE) pipe with the same diameter as the galvanized pipe is lined.

2. The application fields are different: PSP steel-plastic pipes are made of different plastic materials, which are suitable for the working environment from -30 ° to 95 ° on the base, and can be widely used in water supply and drainage of high-rise buildings, tap water supply enterprises, residential quarters, hot and cold water transportation, industrial circulating water systems, deionized pure water systems, wear-resistant and anti-corrosion systems, anti-scaling, antibacterial and anti-corrosion systems, and other fields.

Plastic-lined steel pipes are widely used in the water supply system of cold and hot water in various buildings. The connection method has special snap ring connection, groove (clamp) connection or thread connection, and the construction process is similar to the groove connection of steel pipe and the wire connection of steel pipe.

3. There are differences in the characteristics of pipes: PSP steel-plastic pipes have the characteristics of high mechanical strength and corrosion resistance, and the technology of plastic-lined steel pipes inherits the respective advantages of steel pipes and plastic pipes, and the pipes are reasonably designed after comprehensive analysis according to market demand, production technology, anti-corrosion measures, connection methods, cost performance and many other aspects.

PPS steel-plastic composite pipe, the product is based on seamless steel pipe and welded steel pipe, and the inner wall is coated with high adhesion, anti-corrosion, food-grade sanitary polyethylene powder coating or epoxy resin coating. The water-supplied galvanized and plastic-coated composite steel pipe made by pre-treatment, preheating, internal coating, leveling and post-treatment processes is an upgraded product of the traditional galvanized pipe, and the steel-plastic composite pipe is generally connected with threads.

This product has the following advantages.

1. It retains the rigidity and strength of traditional metal pipes, which are far better than plastic pipes and aluminum-plastic pipes;

2. It has the characteristics of smooth inner wall, low friction resistance and no scaling, and the outer wall is more beautiful and luxurious;

3. Light weight, good toughness, high impact resistance and compressive strength; Applicable temperature wider -30 100 ;

4. The connection mode with the pipe fittings can be twisted wire, socket, flange, groove, welding, etc., which is a variety of ways to save labor and labor;

5. The difference in thermal expansion coefficient between the connection part and the pipe fitting is small, which is more safe and reliable;

6. The performance ratio is reasonable, the comprehensive cost is low, and it is more economical than copper pipes and stainless steel pipes.

PSP steel-plastic composite pipe is coated with plastic inside and outside, and the middle is a steel pipe.

Hello, PPR pipe is a pure plastic pipe, flammable, softened, weathered, while the outer layer of the steel-plastic composite pipe is a galvanized seamless steel pipe, and the inner layer is a two-layer structure pipe of plastic pipe, which can achieve the advantages of non-burning, non-softening, aging resistance, and long-term use.

High temperature resistance, corrosion resistance! Long service life!

1. PSP steel-plastic pipe hot melt connection.

PSP steel-plastic composite pressure pipe is connected with double hot melt, and the double hot melt pipe fittings comply with the industry standard CJ T 237-2006 standard.

The CJ T237-2006 (double hot melt pipe fittings for steel-plastic composite pressure pipes) standard promulgated by the Ministry of Construction of the People's Republic of China is a widely used connection method for PSP steel-plastic composite pipes in the country. It is characterized by reasonable cost, mature technology, simple equipment, double insurance and double hot melt to ensure the safety of water supply. It is widely used in all kinds of first-class projects, well-known enterprise manufacturers, education projects, municipal projects, people's livelihood housing projects, ......Wait.

2. PSP steel-plastic pipe flaring (internal expansion) connection.

PSP steel-plastic pipe flaring (internal expansion G-type compression) connection.

Implement the industry standard CJ T 253-2007 "Pipe Fittings for Steel-Plastic Composite Pressure Pipes".

PSP steel-plastic composite pressure pipe with flaring (internal expansion G-type clamping) connection method, the implementation of the industry standard CJ T 253-2007 standard promulgated by the Ministry of Construction of the People's Republic of China CJ T 253-2007 "Steel-Plastic Composite Pressure Pipe Fittings" is a mechanical metal connection method of PSP steel-plastic composite pipe, the principle is to expand the pipe port and then set the metal pipe fittings in the PSP pipe with bolts or internal and external thread buckle pipe fittings to connect a connection method. It is also a PSP pipe connection method that conforms to relevant national standards. It is characterized by metal pipe fittings connection, the technology is more traditional, the pipe fittings and connection equipment are heavier, the current market share is less, the cost is slightly higher, but there are still customer needs.

3. PSP steel-plastic pipe clamping connection.

PSP steel-plastic pipe flaring (internal expansion G-type compression) connection.

PSP steel-plastic pipe implements the industry standard CJ T 253-2007 "Pipe Fittings for Steel-Plastic Composite Pressure Pipe".

PSP steel-plastic composite pressure pipe with flared (internal expansion G-type clamping) connection, in accordance with the industry standard CJ T 253-2007 standard.

Summary: In general, the above PSP steel-plastic composite pipe is divided into the above common connection methods, and the most used is the double hot melt connection of PSP steel-plastic composite pipe.

At present, there are four types of guidance that I have coached myself:

1. There is a standard for flaring connection ---.

2.Compression internal expansion connection--- standard 3 with flared connection, double hot melt connection (with transition joint) - there is standard 4, electromagnetic melt connection --- no standard.