27SiMn Hydraulic strut tubeDetailed product description：

27SiMn hydraulic prop pipe

Specifications:
83*13   83*14   89*16    95*9.2
95*10   95*15   102*14   114*9.2
114*10  114*19  121*14

The 27SiMn hydraulic prop pipe follows the standard GB/T17396-1998. Mainly used for making coal mine hydraulic supports and cylinders, columns, as well as other hydraulic cylinders and columns.
Representative materials include 20, 45, 27SiMn, etc.
On the basis of high-quality carbon structural steel, one or several alloying elements are appropriately added to improve the strength, toughness, and hardenability of the steel. After being made, this type of steel usually needs to undergo heat treatment such as quenching and tempering, chemical heat treatment, and surface quenching. Compared with high-quality carbon structural steel, it has good comprehensive mechanical properties and is often rolled into round, square, and flat shapes for use as important structural components in machinery or machines The corrosion resistance itself is not stainless steel, of course, the corrosion resistance is not good. But its wear resistance and machinability are much better than stainless steel.
Calculation method for hydraulic support pipe:
[(Outer diameter wall thickness) * Wall thickness] * 0.02466=kg/meter (weight per meter)

Advantages and disadvantages of hydraulic system
Advantages of Hydraulics
Compared with mechanical transmission and electrical transmission, hydraulic transmission has the following advantages:
1. Various components of hydraulic transmission can be conveniently and flexibly arranged according to needs.
2. Lightweight, small in size, low in motion inertia, and fast in response speed.
3. Easy to operate and control, capable of achieving a wide range of stepless speed regulation (speed regulation range up to 2000:1).
4. It can automatically implement overload protection.
5. Mineral oil is generally used as the working medium, and the relative motion surface can self lubricate with a long service life;
6. It is easy to achieve linear motion/
7. It is easy to achieve machine automation. When using electro-hydraulic joint control, not only can a higher degree of automatic control process be achieved, but also remote control can be realized.

Disadvantages of hydraulic system
1. Due to the high resistance and leakage of fluid flow, the efficiency is relatively low. If not handled properly, leakage not only pollutes the site, but may also cause fire and explosion accidents.
2. Due to the susceptibility of work performance to temperature changes, it is not advisable to work under very high or low temperature conditions.
3. The manufacturing accuracy of hydraulic components requires high precision, so the price is relatively expensive.
4. Due to the leakage and compressibility of liquid media, strict transmission ratios cannot be obtained.
5. It is difficult to identify the cause of hydraulic transmission failure; The use and maintenance require a high level of technical expertise.