With the rapid development of China's hydraulic pipe market, the related core production technology application and research and development will become the focus of the industry. Understanding the research and development trends, process equipment, technology applications and trends of the core technology of hydraulic tube production at home and abroad is crucial for enterprises to improve product specifications and improve market competitiveness. Advantages and disadvantages of hydraulics Hydraulic advantages Compared with mechanical transmission and electric transmission, hydraulic transmission has the following advantages: 1. Various components of hydraulic transmission can be arranged conveniently and flexibly according to needs. 2. Light weight, small volume, small motion inertia and fast reaction speed. 3, convenient control and control, can achieve a wide range of stepless speed regulation (speed range up to 2000:1). 4, can automatically achieve overload protection. 5. Generally, mineral oil is used as the working medium, and the relative moving surface can be self-lubricated and has a long service life; 6, it is easy to achieve linear motion / 7. It is easy to realize the automation of the machine. When the electro-hydraulic combined control is adopted, not only can a higher degree of automatic control process be realized, but also remote control can be realized. Hydraulic disadvantage 1. The efficiency is low due to the resistance of the fluid flow and the large leakage. If not handled properly, the leak will not only contaminate the site, but it may also cause fire and explosion. 2. Since the working performance is susceptible to temperature changes, it is not suitable to work at very high or low temperature conditions. 3. The manufacturing precision of hydraulic components is relatively high, so the price is relatively expensive. 4. Due to the leakage of liquid medium and the influence of compressibility, a strict transmission ratio cannot be obtained. 5. It is not easy to find out the cause when the hydraulic transmission fails; the use and maintenance requirements have a higher technical level. Application of hydraulic pipes and ordinary steel pipes 1. Seamless steel pipe for fluid: GB8163-99 2. Seamless steel pipe for boiler: GB3087-1999 3. High-pressure seamless pipe for boiler: GB5310-95 (ST45.8-III type) 4. High-pressure seamless steel pipe for fertilizer equipment: GB6479-1999 5. Seamless steel pipe for geological drilling: YB235-70 6. Seamless steel pipe for oil drilling: YB528-65 7. Seamless steel pipe for petroleum cracking: GB9948-88 8. Special seamless pipe for oil drill collar: YB691-70 9. Seamless steel pipe for automobile semi-axle: GB3088-1999 10. Seamless steel pipe for ships: GB5312-1999 11. Cold drawn cold rolled precision seamless steel pipe: GB3639-1999 Various alloy tubes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel tubes are divided into two types: seamless steel tubes and welded steel tubes according to different production processes. Seamless steel tubes are seamless steel tubes made of steel ingots, tube blanks or steel rods. Hydraulic pipe weight formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / m (weight per meter) Shenzhen Sunwind Energy Tech Co.,Ltd , https://www.sunwindbatterylm.com