Winding three-layer polyethylene anticorrosive spiral steel pipe
1. Overview. Spiral steel pipe with winding three-layer polyethylene anti-corrosion spiral steel pipe is a pipeline material with excellent anti-corrosion performance, which is widely used in petroleum, chemical, natural gas and other fields. The pipeline consists of a three-layer structure, the inner layer is a spiral steel pipe, the middle layer is a polyethylene anti-corrosion layer, and the outer layer is an anti-mechanical damage layer. This structure makes the pipeline have excellent corrosion resistance, wear resistance and high temperature resistance, which can effectively extend the service life of the pipeline, reduce the frequency of maintenance and replacement, and reduce the operating cost.
Second, the production process.
The production process of spiral steel pipe with winding three-layer polyethylene anticorrosive spiral steel pipe mainly includes the following steps:
1.Pretreatment of steel pipes: derusting, cleaning and drying of steel pipes are carried out to ensure the cleanliness and dryness of the surface of steel pipes, and provide a good foundation for subsequent coating work.
2.Bottom coating: A layer of primer is applied to the surface of the steel pipe, and the function of the primer is to increase the adhesion between the steel pipe and the anti-corrosion layer and improve the anti-corrosion effect.
3.Intermediate layer coating: After the primer has dried, the polyethylene anticorrosive layer is coated. The main function of this layer is to prevent the pipeline from chemical and galvanic corrosion and improve the durability of the pipeline.
4.Surface coating: After the anti-corrosion layer is coated, the anti-mechanical damage layer is coated. The function of this layer is to protect the anti-corrosion layer from mechanical damage, such as friction, impact, etc.
5.Wrap machining: After the above steps, the steel pipe is wound to make it spiral shape. This step can improve the strength and stiffness of the pipeline, and at the same time, it can also improve the pressure resistance of the pipeline.
6.Quality inspection: Conduct quality inspection on the finished pipeline, including appearance inspection, thickness inspection, adhesion inspection, etc., to ensure that the product quality meets the relevant standards.
3. Performance characteristics.
The spiral steel pipe with winding three-layer polyethylene anticorrosive spiral steel pipe has the following performance characteristics:
1.Excellent anti-corrosion performance: The design of the three-layer structure makes the pipeline have excellent corrosion resistance, which can effectively prevent the occurrence of chemical corrosion and electrochemical corrosion, and prolong the service life of the pipeline.
2.Excellent wear resistance: Polyethylene anti-corrosion layer has strong wear resistance, which can effectively resist the wear effect of soil, sand and gravel on the pipeline.
3.Good high temperature resistance: The pipeline can operate stably for a long time in a high-temperature environment, and is not easy to deform, age or damage.
4.High strength and stiffness: After winding processing, the pipe has strong compression and tensile resistance, and can withstand high pressure and tensile force.
5.Easy installation: The pipeline connection method is simple and fast, which can effectively shorten the construction period and reduce the installation cost.
6.Long life: Due to the excellent anti-corrosion performance and wear resistance of the pipeline, its service life is long, which can effectively reduce the operating cost and maintenance cost.
7.Environment-friendly: The production and use of pipelines have little impact on the environment and meet environmental protection requirements.
Fourth, the field of application.
Spiral spiral steel pipes with winding three-layer polyethylene anticorrosive steel pipes are widely used in the following fields:
1.Oil and gas transportation: It is used for long-distance transportation of oil and natural gas, which can effectively prevent pipeline leakage accidents due to corrosion and ensure energy security.
2.Chemical pipelines: used for material transportation in the chemical production process, which can prevent pipeline corrosion and leakage from affecting production.
3.Urban water supply and drainage: It is used in urban water supply and drainage pipeline system, which can improve the durability and water quality safety of pipelines.