What is a plastic coated steel pipe and what is a plastic coated steel pipe

Plastic-coated steel pipe, also known as plastic-coated pipe, steel-plastic composite pipe, and plastic-coated composite steel pipe, is a steel-plastic composite steel pipe with steel pipe as the matrix, through spraying, rolling, dipping, and suction processes on the inner surface of the steel pipe (bottom pipe) to weld a layer of plastic anti-corrosion layer or on the inner and outer surfaces of the plastic anti-corrosion layer.

Universal colors: black, gray, blue, red, white, green.

Coating thickness: PE (modified polyethylene) coating thickness is 400um-1000umep (epoxy resin) spraying thickness is 100um-400umCoating method: PE (polyethylene) is hot-dip plastic EP; (epoxy) is sprayed inside and outside.

Product specifications: DN15—DN1660 Ambient temperature: -30 to 120 Connection:

Thread connection (DN15-DN100), groove (DN65-DN400), flange (applicable to any diameter), welded type, bimetal connection, socket, pipe section, sealing connection, etc.

Plastic-coated composite steel pipe is a new composite material made of steel pipe as the matrix, which is cured at high temperature by melt spraying or adsorption of food-grade epoxy powder coating or PE material on the inner wall through special skills. It has excellent corrosion resistance and relatively low frictional resistance. Epoxy resin plastic-coated steel pipe is suitable for the transportation of water supply and drainage, seawater, warm water, oil, gas and other media, and polyvinyl chloride (PVC) plastic-coated steel pipe is suitable for the transportation of drainage, seawater, oil, gas and other media.

Plastic-coated steel pipe.

Plastic-coated steel pipe is a steel-plastic composite steel pipe.

Plastic-coated steel pipe, also known as plastic-coated pipe, steel-plastic composite pipe, and plastic-coated composite steel pipe, is a steel-plastic composite steel pipe that uses the steel pipe as the matrix and welds a layer of plastic anti-corrosion layer on the inner surface of the steel pipe or a plastic anti-corrosion layer on the inner and outer surfaces of the steel pipe through spraying, rolling, dipping, and suction processes.

Plastic-coated steel pipes have excellent corrosion resistance and relatively small frictional resistance. Epoxy resin plastic-coated steel pipe is suitable for water supply and drainage, seawater, warm water, oil, gas and other media, and PVC plastic-coated steel pipe is suitable for drainage, seawater, oil, gas and other media.

The coating itself of plastic-coated steel pipes also has good electrical insulation and does not produce electrical erosion. Low water absorption, high mechanical strength, small friction coefficient, can achieve the purpose of long-term use. It can also effectively prevent the destruction of plant roots and soil environmental stress.

Easy to connect and easy to maintain.

Detection method of plastic-coated steel pipe

1. Visual inspection.

Visually inspect the appearance quality of the coated steel pipe, and the test results should comply with the regulations.

2. Thickness measurement.

Two cross-sections of different lengths are taken from both ends of the coated steel pipe, and the coating thickness of any four points directly crossed on the circumference is measured with an electromagnetic thickness gauge in each cross-section, and the test results should conform to the provisions of the book.

3. Pinhole test.

The length of the pipe section specimen is about 1000mm, and the steel pipe coating is checked with an electric spark leak detector under the specified test voltage, the coating thickness is not greater than the rock culture, the test voltage is 1500 V, and the coating thickness is greater than the test voltage is 2000V. Check whether there is an electric spark state jujube draft, and the test results should comply with the regulations.

4. Adhesion test.

The adhesion test is carried out in accordance with CJ T 120-2008, and the test results should comply with the regulations.

5. Bending test.

DN 50 mm coated steel pipes are subjected to flexure tests. The length of the pipe section specimen is 1200 100mm. In the environment of 20 5 temperature, the radius of curvature is 8 times the nominal diameter of the steel pipe, and the bending angle is 30°, and the bending is carried out on the pipe bender or die.

In the flexure test, there is no filler in the tube, and the weld is located on the side of the main curved surface. After the test, the specimen is dissected from the middle of the curved arc, the inner coating is checked, and the test results should comply with the regulations.

The above content refers to Encyclopedia - plastic-coated steel pipe.

Plastic-coated steel pipe is a kind of steel pipe processed by special technology, which has the characteristics of strong corrosion resistance, wear resistance, high temperature resistance, and not easy aging. It is widely used in pipeline systems for transporting gas, water, oil, natural gas, chemicals and other media, especially in marine environment, chemical, pharmaceutical, food and other industries.

The manufacturing process of plastic-coated steel pipe is to spray a layer of epoxy resin powder first, and then bake it at high temperature to solidify it to form a hard anti-corrosion layer. It is then sprayed with a layer of polyethylene powder to form an anti-aging, abrasion-resistant outer layer. Such double-layer plastic-coated steel pipes not only have good anti-corrosion performance, but also have good wear resistance and high temperature resistance, which can meet the requirements of various working conditions.

The service life of plastic-coated steel pipes can generally reach more than 30 years of cluster chains, which is much higher than the service life of other pipeline materials. At the same time, the installation and maintenance of plastic-coated steel pipes are also very convenient, and there is no need for anti-corrosion treatment and anti-corrosion maintenance, which reduces the difficulty of work and the investment of manpower and material resources.

In short, plastic-coated steel pipe is a pipe material with excellent performance and wide application, which has the characteristics of strong corrosion resistance, wear resistance, high temperature resistance, and not easy aging, and is widely used in pipeline systems in various fields.

Plastic-coated steel pipes are steel-plastic composite pipes.

Plastic-coated steel pipe is a steel-plastic composite steel pipe that uses the steel pipe as the matrix and welds a layer of plastic anti-corrosion layer on the inner surface of the steel pipe (bottom pipe) or a plastic anti-corrosion layer on the inner and outer surfaces through the process of spraying deficit difference, rolling, dipping and suction. Plastic-coated steel pipe has good corrosion resistance and relatively small friction resistance, and it is mainly used for drainage, exhaust, oil or warm water.

The density of plastic-coated steel pipes is high, so the service life is relatively long, and it is not easy to deform no matter what season it is used. Moreover, the plastic-coated steel pipe can adapt to various environments, such as the humid environment of the pin, the high temperature environment, and the polar temperature environment, and the plastic-coated steel pipe can be used normally.

Detection method of plastic-coated steel pipe

1. Visual inspection is to check the appearance quality of the coated steel pipe with the naked eye.

2. The thickness of the ruler is to measure the coating thickness at any four points at right angles on the circumference on any two cross sections.

3. Pinhole test refers to the use of spark detector to check the steel pipe coating at the specified test voltage, and also to check whether there is an electric spark.

4. The bending test is generally carried out on the bending machine or mold, it is worth noting that there is no filler in the tube during the bending test, and the weld is located on the side of the main surface of the bending.

5. The flattening test is to place the specimen between the two plates, and gradually compress it on the pressure testing machine until the distance between the two plates is four-fifths of the outer diameter of the specimen, and the flattening is that the weld of the coated steel pipe is perpendicular to the direction of load application.

The above content refers to Encyclopedia - plastic-coated steel pipe.

The plastic-coated steel pipe has the characteristics of anti-corrosion and anti-rust. The inner cavity of the epoxy resin coated anti-corrosion spiral steel pipe is very smooth and clean, and the friction is not large. Suitable for natural gas pipes or drinking water pipes.

In addition, the surface of the Yinling closed pipeline can be painted with bright wall paintings, which is also more beautiful and cracked. Compared with traditional brittle and rusty pipe fittings, the service life of plastic-coated steel pipes can reach 50 years or more, and the cost is very low. Compared with air conditioning copper pipes and galvanized steel pipes, it is more cost-effective.

So at the moment it's not just the water supply lines at home. In addition to this, it is also a municipal pipe of the city. For example, plastic-coated steel pipes, which are natural gas and oil pipelines, have the hardness of the previous seamless steel pipes, and are lighter, less resistant, and flow fast in the pipeline.

Plastic-coated composite steel pipe is a kind of pipe composed of steel pipe and plastic coating. It has excellent characteristics such as anti-corrosion, anti-corrosion, wear-resistant, cold-resistant, heat-resistant, anti-aging, acid-alkali resistant, etc., and is widely used in petroleum, chemical, water conservancy, municipal and other fields. It is a kind of green and environmentally friendly pipe, which has no pollution to the environment, and is the preferred material for the construction of modern industrial pipelines.

Plastic-coated composite steel pipe has excellent corrosion resistance, can resist the attack of corrosive media such as acid, alkali and salt, and has a long service life. Its outer layer is made of high solids polyethylene, and the inner layer is made of light foam polyethylene, which reduces the frictional resistance of the pipeline and increases the conveying flow. At the same time, due to the special material, it can be flexibly arranged, easy to install, and the whole construction process is hygienic, safe and fast.

Plastic-coated composite steel pipes are mainly used to transport liquid or gaseous media such as oil, tap water, gas, and chemicals. Compared with traditional pipes, it has more advantages, such as strong reliability, long life, low maintenance costs, etc. In particular, it is widely used in urban sewage pipeline projects, and has made important contributions to the cause of environmental protection.

The technological innovation and improvement of plastic-coated composite steel pipes will help improve the safety, stability and efficiency of pipeline transportation and meet the needs of modern industrial development.