The composite hose is mainly composed of inner steel wire, reinforced braided layer, sealing layer, outer reinforcement layer and outer steel wire. And normal temperature water and other fluid media, the oil hose also has good chemical resistance. Frequent bending will not crack and delaminate, suitable for oil, chemical transportation ships, docks, etc.

Under the same conditions of pressure resistance, the oil delivery composite hose is better than the rubber hose of the same specification. It can still work normally under a small radius of gyration, and its bending parts are always round, and will never fold, fall off the inner wall, block and break the tube. Due to the use of laminated galvanized sheet structure, it has good pressure resistance performance, and the hose will expand and contract when charging and decompressing. It is mainly used in petroleum exploration, petroleum refining, sewage oil treatment, petrochemical storage, storage of animal and vegetable oils, shipbuilding industry, oil port terminals, aviation fuel oil for petroleum products, etc. It is a popular new type of pipeline in the petrochemical industry.

In order to make the quality of petrochemical pipelines reach the relevant standards and the transportation efficiency of petrochemical products, the following strategies are proposed to improve the quality of pipeline installation.

1. For the problems that occur in the production process of the pipeline

In the production process of petrochemical pipelines, construction records should be compiled for each section of the pipeline. After the pipeline construction is completed, the pipeline should be tested according to the relevant testing standards, the quality of the pipeline. For the pipeline with problems, timely repair work, the quality of the pipeline.

2. Solutions to problems in pipeline welding construction

In the process of welding the composite oil hose, the welding work of the pipeline should be carried out according to the welding standard. During the welding process, the welding should be carried out according to the specifications of the welding joint according to the marks on the drawing. After welding, strict non-destructive inspection work should be carried out on the welded surface. After the entire welding process has been determined to be qualified, the pipe should be heat treated. It is also very important for the airtightness test of the welded part. In the process of testing the airtightness of the welding surface, the inspection should be carried out in strict accordance with the relevant testing standards, and the quality is qualified.

3, the solution to the problem of the pipeline

Because the pipelines for petrochemical transportation exist underground, they will be corroded by underground objects, resulting in damage to the pipelines. Therefore, we need to paint the pipeline layer according to the standard, so that the service life of the pipeline can be improved. In the process of brushing the layers of petrochemical pipelines, the more commonly used materials are petroleum pitch and epoxy coal pitch. Both materials have their own advantages and disadvantages. The pollution of petroleum asphalt is relatively strong, and the impact on the environment is relatively large, but in terms of cost, the cost of this material is relatively low, and the cost of epoxy coal tar tar material is relatively high, but in terms of construction technology That said, it's relatively simple. In the process of painting the paint, it should be carried out according to the standard, which can achieve the expected effect and the quality of the construction pipeline.

Composite hose is a relatively comprehensive product in life. It can be seen that this is a tube product with packaging performance, and this hose is adaptable and can be used as a conveying device for many products.

In fact, composite hoses appeared a long time ago. This is a relatively long-standing product. With the continuous progress and innovation of technology, more and more excellent products have appeared, and the functions have become more and more comprehensive. More and more to meet the requirements of users in all aspects.

The composite hoses produced now have many, many characteristics. First of all, they can withstand high temperature and cold, and are very suitable for handling. Because of their light weight and the ability to adjust the angle, they are very flexible to use. It is mainly used to transmit various oils, and these characteristics are very good for oil processing.

At present, the domestic composite hose production has developed a market, which occupies a large proportion in the market, because the technology does not have domestic technology.

The composite hose adopts a multi-layered multi-material multi-layer sealing structure, which still has good crack resistance and leakage resistance in harsh environments, will not burst suddenly, and can easily handle gasoline, diesel, crude oil and various chemical liquids. Transmission work, can maintain high flexibility even in cold weather, light weight, strong toughness, easy to handle, soft tube body, flexible use, low temperature, anti-aging, non-deformation, exposed inner spiral metal and inner It has good electrostatic dissipation performance, so the hose has good pressure resistance performance. When the pressure is charged and decompressed, the hose has a phenomenon of expansion and contraction. When the fluid is overpressured instantaneously, there will be no explosion, only the super-specified creeping phenomenon will occur in the tube itself. This performance is suitable for modern computer management to complete the operation of conveying oil and gas.

The definition of composite hose is gradually generalized, and the composite hoses produced by various manufacturers are aimed at different needs and diversify the products.

Composite hoses are expensive, high temperature, flammable, explosive, corrosive, liquid gases that pollute the environment, and composite hoses are resistant to oil and chemicals. Whether it is corrosive sulfuric acid, nitric acid, flammable and explosive solvents, composite hoses are expressive.