5. The length of steel wire woven rubber hose is large, with a fixed length of 20 meters for sizes above 32 and up to 10 meters or even over 100 meters for sizes below 25.
High pressure oil pipes are mainly divided into high-pressure steel wire woven oil pipes and high-pressure steel wire wound oil pipes according to the production process.
Steel wire wrapped hose
The structure of high-pressure steel wire wound hose is mainly composed of inner rubber layer, Mesoglea, four or more layers of steel wire reinforcement layer alternately wound and outer rubber layer.
The inner adhesive layer has the function of withstanding pressure on the conveying medium and protecting the steel wire from erosion, while the outer adhesive layer protects the steel wire from damage（ ф The 0.3-2.0 reinforcement layer serves as a reinforcing layer for the skeleton material.
High pressure steel wire wrapped oil pipe (high-pressure oil pipe) Purpose: High pressure steel wire reinforced hydraulic oil pipe is mainly used for hydraulic supports in mines and oil field development, suitable for engineering construction, lifting transportation, metallurgical forging, mining equipment, ships, injection molding machinery, agricultural machinery, various machine tools, and mechanization in various industrial departments The automatic hydraulic system transports petroleum based (such as mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) and water-based liquids (such as emulsion, oil-water Emulsion, water) with a certain pressure (higher pressure) and temperature and liquid transmission, and the maximum working pressure can reach 70-120Mpa.
Working temperature of high-pressure steel wire wrapped oil pipe (high-pressure oil pipe): -40 ℃~120 ℃
Product specification range: DN6mm~DN305mm.
Type: 4SP type - four layer steel wire wrapped medium pressure hose.
Type 4SH - High pressure hose wrapped with four layers of steel wire.
R12 type - High temperature and medium pressure oil pipe wrapped with four layers of steel wire under harsh conditions.
R13 type - high-temperature and high-pressure oil pipe with multi-layer steel wire winding under harsh conditions.
R15 type - high-temperature and ultra-high pressure oil pipes with multi-layer steel wire winding under harsh conditions.
Steel wire braided hose
The structure of high-pressure steel wire braided rubber hose is mainly composed of liquid resistant synthetic rubber inner rubber layer, Mesoglea, I, II, III steel wire braided layer and weather resistant synthetic rubber outer rubber layer.
But according to the design principle of high-pressure hose, the III layer braided hose does not have any effect when the hose is under pressure, wasting materials, increasing the weight of the hose itself, and reducing the flexibility of the hose. Therefore, there is no standard for this type of hose in the standards of various countries. Some old engineers in enterprises still use the old standards of the past, so some people still choose this model when designing.
High pressure steel wire woven hose usage: High pressure steel wire reinforced hydraulic oil pipes are mainly used for hydraulic supports in mines and oil field development, suitable for engineering construction, lifting and transportation, metallurgical forging and pressing, mining equipment, ships, injection molding machinery, agricultural machinery, various machine tools, and mechanization in various industrial departments The automatic hydraulic system transports petroleum based liquids (such as mineral oil, soluble oil, hydraulic oil, fuel oil, lubricating oil) and water-based liquids (such as emulsion, oil-water Emulsion, water) with certain pressure and temperature and liquid transmission.
Working temperature of high pressure steel wire braided hose: oil -40 ℃~100 ℃, air -30 ℃~50 ℃, water lotion+80 ℃ below.
The specification range of high-pressure steel wire braided rubber hose: DN5mm~DN102mm.
Petroleum drilling hose
Structure: composed of inner rubber layer, inner rubber protective layer, Mesoglea, steel wire winding layer and outer rubber layer.
Usage: Steel wire wound drilling hose is used for oil field cementing, well repair, petroleum geological exploration, small drilling rigs and hydraulic coal mining, conveying fluid media such as mud and room temperature water.
coal industry
The oil pipes used in the coal industry mainly include hydraulic support hoses. In recent years, the pressure requirements for some coal mine hydraulic supports have increased, and some steel wire woven rubber hoses cannot meet their performance requirements, requiring the use of steel wire wrapped oil pipes instead. In addition, in order to prevent coal dust pollution during underground coal mining and improve production safety, the variety of oil pipes used in coal mines has been increased, such as the expansion oil pipe of the coal seam water probe hole sealer, which is used for water injection, grouting and other operations on the coal seam before the comprehensive mining of the coal mine underground working face. According to reports, domestic manufacturers have produced and tested it in more than ten coal mines, which can replace similar imported products.
