Coal industry The oil pipe for coal industry mainly has hydraulic support hose. In recent years, the pressure requirements of some coal mine hydraulic supports have been improved, and some steel wire braided hose can not meet its performance requirements, so it is required to switch to steel wire wound tubing. In addition, in order to prevent coal dust pollution and improve production safety in the process of underground coal mining in coal mines, the variety of coal mine tubing has been increased, such as coal seam water exploration and hole sealer telescopic tubing, which is used for water injection and grouting of coal seams before fully mechanized mining in underground coal mines. According to reports, domestic manufacturers have been produced, and more than a dozen coal mines trial, can replace similar imported products. petroleum industry Key Points Proposed in China's Offshore Oil Development Strategy in the 21st Century The development of offshore and shallow marine oil fields, therefore, the oil industry in addition to the use of drilling tubing, vibration tubing, but also requires the use of shallow marine oil pipeline. Shallow seabed oil pipelines have been produced in China, but floating or semi-floating oil pipelines and deep seabed oil pipelines are still imported. With the implementation of China's offshore oil development strategy, offshore oil exploration will continue to improve the performance requirements of the pipeline.

The high-pressure hose structure has one layer of steel wire braided hose, two layers of steel wire braided hose, three layers of steel wire braided hose, four layers of steel wire wound hose, six layers of steel wire wound hose, general diameter hose diameter 6-102, large diameter hose diameter 102-300. There are high-pressure hose and low-pressure hose. Low-pressure hose has more sizes than high-pressure hose. Several types of high-pressure hose are also easy to remember. Professional focus on creating high quality high pressure tubing, with long service life, small bending radius, high pressure, fatigue resistance and other properties. High pressure hose ozone resistance, high and low pressure resistance, temperature resistance (-80 to 300 degrees), high transparency, strong resilience, resistance to compression permanent deformation, oil resistance, stamping resistance, acid and alkali resistance, wear resistance, flame resistance, voltage resistance, conductivity and other properties. The hydraulic hose mainly relies on the reinforcement layer to bear the pressure. Braided rubber hose is glued firmly to the inner and outer rubber layers by the glue slurry. Due to the mutual contact between the steel wires in the same braided layer, the durability of the steel wires will be affected by the friction between the steel wires due to their different expansion and contraction when subjected to dynamic pressure. The winding pipe is formed by two layers with different winding directions to form a working layer, and there is an intermediate glue between the two layers, so there is no intersection between the two layers of steel wires of the same working layer. Therefore, it will not form stress concentration or friction and wear when subjected to dynamic pressure with the cross bending between the steel wires. Therefore, it has good durability and can withstand high pressure.

High-pressure rubber hose is an important part of the hydraulic system of pipeline engineering machinery such as pipeline pressure opening, pipeline cutting, hydraulic mud pump, etc. Due to the harsh working environment in the use process, it is often exposed to the working environment of high temperature, high pressure, high pollution and high dust, which will lead to leakage, crack, rupture, loosening and other faults. However, under normal circumstances, just simply replace the hose without carefully analyzing the cause of the above failure of the hose, and the same failure will be repeated soon after the new use. High-pressure hose loose or rupture and other phenomena, resulting in the waste of hydraulic oil will pollute the environment, but also affect the work efficiency, and even

1. product structure: steel wire braided hose structure is composed of liquid-resistant synthetic rubber inner rubber layer, middle rubber layer, I or II or III steel wire braided reinforcement layer, and synthetic rubber outer rubber layer with excellent weather resistance. 2. product uses: Steel wire reinforced hydraulic rubber hoses are mainly used for mine hydraulic supports and oil field mining. They are suitable for engineering construction, lifting and transportation, metallurgical forging, mining equipment, ships, injection molding machinery, agricultural machinery, various machine tools and various industrial sectors. In mechanized and automated hydraulic systems, petroleum-based liquids (such as mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) and water-based liquids with certain pressure and temperature are transported

The difference between domestic and imported hose is mainly the product formula and manufacturing process. In such a large rubber industry, it is inevitable to avoid the mixed situation of good and bad people. What methods can we use to help users select good products for appearance inspection? We can see the methods that can be operated by hands. 1. Whether the internal glue is degummed or not, the degumming is caused by too many mixed and inferior glue. 2. Whether the inner adhesive layer is uniform or not is related to equipment modulation. A good product should be that the inner adhesive layer is tight and uniform. 3. Use your fingers to pinch the rubber layer. Good elasticity is better! 4, high brightness for the glue type 5, invisible method test, pressure test under the national standard requirements

Although vulcanized rubber strips have good comprehensive properties, not all products can be used in a wide range. NBR materials with good oil and solvent resistance are prone to aging and cracking under oxidation, and their cold resistance is relatively poor. It is quite targeted to distinguish the material types of rubber strips used as a reference. 3. In addition to the reference value of material and comprehensive performance, the sealing effect is also a core element that cannot be ignored for the distinction between the types of rubber strips, and to do this, it is necessary to select high quality manufacturers and products to ensure its effect.

There are many functions of the sealant strip, including the sound insulation, so many people will think that the sealant strip is useful for car sound insulation. But in fact, the effect of the sealing strip on the sound insulation of the car can be described as minimal. First of all, although the role of the sealing strip includes sound insulation, but the biggest role of the actual strip is sealing, used to improve the sealing of the vehicle, the so-called sound insulation in some cases is to prevent the vehicle parts contact, wear and tear generated by the noise. To give a simple example, a sealing strip is pasted under the engine cover, hoping to reduce engine noise, but in fact the engine