The military stainless steel wire hose pipe market is divided into two categories: hoses for aerospace and hoses for ground equipment. Aerospace hoses are still mainly seamless hoses, as there are no new products to replace them due to the constraints of shaping products.
Hoses for ground equipment in the military industry have gradually been replaced by civilian stainless steel wire hose pipes due to lower risk of usage.
In the steel and metallurgical industry, stainless steel wire hose pipes are gradually transitioning from product performance competition to performance-price competition, and the product structure has been basically finalized. The use of stainless steel wire hose pipe in this industry has been widely recognized.
In the petrochemical industry, the demand for large-diameter high-pressure hoses and central drainage hoses in storage tanks is increasing, and the development of new products in this field cannot meet market demand in China.
Currently, some hoses in certain situations have been replaced by other products, such as non-metallic pipes in the dock pipe market.
In the railway locomotive industry, the product structure has not changed much in recent years due to the standardization of composite rubber hose shapes required by the Ministry of Railways; the main competition is currently based on price and service.
However, in the long run, due to the complexity of usage conditions and the uncertainty of composite rubber hose damage, it is inevitable that stainless steel wire hose pipes will replace them in the development of hose industry, and the development of this product is still ongoing.
In the shipbuilding industry, the product requires approval from the classification society, but there are no special technical performance requirements. However, the market demand for this product is very huge.
For example, floating docks used in inland waterways must use wire hose pipe to compensate for the valve chamber to the oil transfer arm section; otherwise, huge interfacial stresses will be formed, causing serious damage to loading and unloading ship pipelines and oil transfer arms.
In the automobile exhaust system industry, the main market for corrugated tubes in the exhaust pipe system has great potential. Currently, the trend of this product's development is good, but issues such as product performance stability, productivity, cost, etc. need to be resolved.
Due to the high reliability, high temperature resistance, and large compensating advantages of wire hose pipes, they have been increasingly used in water supply and drainage and air conditioning systems in recent years.
In the petrochemical industry, flexible connections often use wire hose pipes that are important connecting components in engineering technology. Metal hoses are mainly composed of corrugated flexible pipes, mesh sleeves, and joints, also known as flexible pipes.
Metal hoses are used to transport various fluids, and their main functions are to reduce the installation stress of pipelines, compensate for the relative movement of pipelines, machines or pipeline connections. They absorb the vibration of the pipeline system and pipeline system noise and have the advantages of good flexibility, lightweight, corrosion resistance, fatigue resistance, high and low temperature resistance, vibration reduction and noise reduction, strong sealing, and long service life.
Compared with rigid pipes, wire hose pipes can play a significant role in vibration isolation. In combination with the American Petroleum Institute (API) 618 standard during use, in order to further improve the vibration isolation effect, the vibration of the wire hose pipe connection within the lever must be effectively controlled. The downstream pipeline of the wire hose pipe and the arrangement of supports must avoid low-order resonance.
The connection between the wire hose pipe and the pipeline inside the lever is equivalent to the vibration source of the wire hose pipe vibration isolation system. When the vibration is large at the vibration source, the vibration energy at the connection of the wire hose pipe is difficult to dissipate.
Even if the vibration isolation effect of the wire hose pipe is good, it is difficult to completely isolate the vibration, resulting in the transmission of large amounts of vibration energy through the wire hose pipe to the outside of the lever. Therefore, vibration control measures such as reinforcing supports should be taken for the pipeline at the vibration source.
The arrangement of downstream pipelines of wire hose pipes and supports should avoid low-order resonance, otherwise, it will cause large vibrations, affecting the vibration isolation effect of the wire hose pipes and the safe use of the wire hose pipes.
