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HYDRAULIC PIPES:
Hydraulic pipes are pipe systems generally used for the transmission of liquids. Hydraulic systems are systems that transmit power generally through pressurized fluids. These pipes are generally designed to operate under high pressure and are used in many industrial applications. For example, hydraulic pipes are frequently encountered in construction machinery, hydraulic presses, automobile brake systems and industrial machinery.
Hydraulic pipes can be made from a variety of materials, but steel or alloy steel is usually used. These materials are resistant to high pressure and have a long service life. Internal diameters of hydraulic pipes may vary depending on working pressure and flow rate.
Installation and maintenance of hydraulic pipes must be done correctly because any error in the system can cause serious malfunctions and even safety risks. For this reason, hydraulic systems are often designed, installed and maintained by professionals.
It is a circuit element that carries and guides the fluid between certain points in the system. Pipes are made of stainless steel and light metals by cold drawing method or welded. Welded pipes are not resistant to high pressures. One of the two important factors in pipe selection in hydraulic circuits is the desired internal diameter and the other is the wall thickness that can meet the working pressure. In order to achieve the desired pressure and flow rates in hydraulic systems, pipe diameters must be calculated and determined using correct methods.
Hydraulic Pipe Types
Hydraulic pipes come in various types according to different applications and requirements. Here are some common types of hydraulic pipe:
1. **Straight Pipes:** It is the simplest type of hydraulic pipe and is generally used in simple hydraulic systems. Straight pipes have a smooth inner surface and outer surface.
2. **Spiral Pipes:** Spiral pipes are wrapped in a spiral spiral outward. This design allows the pipe to gain greater flexibility and fracture resistance. They are generally used in underground hydraulic lines.
3. **Flexible Pipes:** Flexible pipes are often used in tight spaces or when fluid transmission is required between moving components. Thanks to their flexible structure, they can be bent and are usually made of rubber or special synthetic materials.
4. **High Pressure Pipes:** These pipes are designed for use in high pressure hydraulic systems. They are usually made of steel or alloy steel and have a durable construction.
5. **Composite Pipes:** Composite pipes are usually produced from a combination of various materials. These materials include fiber-reinforced plastics and specialty composites. It has advantages such as lightness and durability.
6. **Thermoplastic Pipes:** Thermoplastic pipes are generally used in low pressure hydraulic systems. They are made of materials such as PVC, polyethylene or polypropylene. They have the advantages of flexibility and chemical resistance.
These are just a few examples, and hydraulic pipe types can vary depending on their use, application requirements and challenges. Each pipe type provides the optimal solution for a particular application or usage scenario.
Flow Permeability Calculation in Hydraulic Pipes
PRESSURE LINE:
4m/s up to 50 bar
4.5m/s up to 100 bar
5m/s up to 150 bar
5.5m/s up to 200 bar
6-7m/s after 200 bar
SUCTION LINE:
0.5 to 1.5m/s
RETURN LINE:
2 to 3 m/s
CALCULATION OF PIPE DIAMETER:
Q=Flow rate.........It/min
V= Average speed......m/s
D= Pipe inner diameter..........mm
Hydraulic Pipe Diameters and Wall Thicknesses
Hydraulic system pipes are produced from ST37.4 Material by Cold Drawing Method to prevent them from breaking when exposed to high pressures. Wall thicknesses vary depending on their compressive strength.
Product Standard: DIN 2391
Material Type: NBK ST37,4
HYDRAULIC STEEL DRAW LINE PIPE LIST
Product Code Outer Diameter Wall Thickness Working Pressure Weight
mm mm Bar kg/mt
2391. 6x1.0 Ø6 1.0 392 0.123
2391. 6x1.5 Ø6 1.5 588 0.166
2391. 6x2.0 Ø6 2.0 793 0.197
2391. 8x1.0 Ø8 1.0 294 0.173
2391. 8x1.5 Ø8 1.5 441 0.240
2391. 8x2.0 Ø8 2.0 595 0.296
2391. 10x1.0 Ø10 1.0 249 0.222
2391. 10x1.5 Ø10 1.5 374 0.314
2391. 10x2.0 Ø10 2.0 499 0.395
2391. 12x1.5 Ø12 1.5 311 0.388
2391. 12x2.0 Ø12 2.0 415 0.495
2391. 14x1.5 Ø14 1.5 267 0.449
2391. 14x2.0 Ø14 2.0 400 0.485
2391. 15x1.5 Ø15 1.5 249 0.499
2391. 16x2.0 Ø16 2.0 311 0.690
2391. 16x2.5 Ø16 2.5 389 0.832
2391. 16x3.0 Ø16 3.0 433 0.961
2391. 18x1.5 Ø18 1.5 207 0.610
2391. 18x2.0 Ø18 2.0 277 0.789
2391. 20x2.0 Ø20 2.0 249 0.888
2391. 20x2.5 Ø20 2.5 311 1.079
2391. 20x3.0 Ø20 3.0 374 1.110
2391. 22x2.0 Ø22 2.0 226 0.986
2391. 25x2.5 Ø25 2.5 249 1.387
2391. 25x3.0 Ø25 3.0 299 1.628
2391. 28x2.0 Ø28 2.0 180 1.282
2391. 28x3.0 Ø28 3.0 267 1.850
2391. 30x3.0 Ø30 3.0 249 1.997
2391. 30x4.0 Ø30 4.0 332 2.565
2391. 35x3.0 Ø35 3.0 213 2.367
2391. 35x4.0 Ø35 4.0 285 3.058
2391. 38x4.0 Ø38 4.0 262 3.354
2391. 38x5.0 Ø38 5.0 328 4.066
2391. 42x3.0 Ø42 3.0 178 2.885
2391. 42x4.0 Ø42 4.0 237 3.748
2391. 50x5.0 Ø50 5.0 299 5.625
Usage Areas of Hydraulic Pipes
Hydraulic pipes have a wide range of uses and are found in a variety of applications across many industries. Here are some areas where hydraulic pipes are commonly used:
1. **Building and Construction Machinery:** Hydraulic pipes are used to transmit power and motion in construction machinery (e.g. excavators, loaders, cranes). Due to high pressure requirements, hydraulic systems are widely preferred in these machines.
2. **Automotive Industry:** Hydraulic pipes are used in many applications such as braking systems, steering systems and suspension systems in automobiles and other vehicles.
3. **Agricultural Machinery:** Hydraulic systems in agricultural machinery provide power for lifting mechanisms on tractors, tillage equipment and other functions.
4. **Industrial Machines:** Many industrial machines have hydraulic systems. The use of hydraulic pipes is common in systems such as metal processing machines, presses, injection molding machines.
5. **Marine and Port Equipment:** Hydraulic pipes are used for power transmission in ships, ports and maritime equipment, cranes, crane systems, guidance systems and other hydraulic equipment.
6. **Aerospace Industry:** Hydraulic systems in airplanes, helicopters and spacecraft are used to provide movement of landing gear, flight control surfaces and other systems.
7. **Energy Industry:** Hydraulic pipes are used in hydroelectric power plants, the oil and gas industry, wind turbines and other energy production and distribution systems.
8. **Mining and Underground Applications:** In mining equipment and underground applications, hydraulic systems are used to perform functions such as digging, moving and drilling.
This is just an example of some areas where hydraulic pipes are used. Due to the durability, reliability and efficiency of hydraulic systems, they have a wide range of uses in many industries.