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China manufacturer 150 Ton High Tonnage Hydraulic Bottle Jack Cylinder vacuum pump belt

Product Description

150 ton high tonnage hydraulic bottle jack cylinder

1. Describe:
High pressure electric hydraulic cylinder is powered by ZB series of high pressure electric oil pump,
the function for oil pressure rebound, overflow, it is designed a safe protect pressurizer, it can
protect emergent over pressure, especial construction can protect jack. Hydraulic jack can bear
partial loading is 5% of rated pressure. High pressure alloy cylinder is very durable, especially
in the larger project, it is easily to be operated and control. It can be used for lifting heavy machine,
bridge project, hydraulic engineering, harbour construction and other equipment. It has large output,
light weight, remote control and other advantages, it can match with our high pressure oil pump, it
can reach jack, push, pull and extrusion and kinds of working.

2. Technology parameters:

Model Tonnage
B-A mm
Closed height
A mm
Extend height
B mm
Outer diameter of oil cylinder
Dimension of plunger
Dimension of oil pump
Pressure Recommend electric oil pump
STQ50-100 50 100 225 325 127 70 100 35 63MPA 50T-200T
0.55KW 0.75KW
1.5KW 3KW
4KW 5.5KW
STQ50-160 160 285 445 39
STQ50-200 200 325 525 46
STQ50-300 300 425 725 48
STQ50-500 500 625 1125 63
STQ100-100 100 100 250 350 180 100 140 58 63MPA
STQ100-160 160 310 470 63
STQ100-200 200 350 550 78
STQ100-300 300 450 750 96
STQ100-500 500 650 1150 130
STQ150-100 150 100 260 360 219 125 180 58 63MPA
STQ150-160 160 320 480 69
STQ150-200 200 360 560 86
STQ150-300 300 460 760 103
STQ150-500 500 660 1160 255
STQ200-100 200 100 285 385 240 150 200 96 63MPA
STQ200-160 160 345 505 103
STQ200-200 200 385 585 116
STQ200-300 300 485 785 161
STQ200-500 500 685 1185 221
STQ320-100 320 100 310 410 330 180 250 196 63MPA 1.5KW 3KW
4KW 5.5KW
STQ320-160 160 370 530 240
STQ320-200 200 410 610 258
STQ320-300 300 510 810 311
STQ320-500 500 710 1210 456
STQ400-100 400 100 355 455 380 200 290 198 63MPA 3KW 4KW
5.5KW 7.5KW
STQ400-160 160 415 575 231
STQ400-200 200 460 660 264
STQ400-300 300 555 855 367
STQ400-500 500 755 1255 456
STQ500-100 500 100 360 460 430 200 320 323 63MPA 3KW 4KW
5.5KW 7.5KW
STQ500-160 160 420 580 330
STQ500-200 200 460 660 420
STQ500-300 300 560 860 581
STQ500-500 500 760 1260 599
STQ630-100 630 100 417 517 500 250 360 560 63MPA 4KW 5.5KW
7.5KW 11KW
STQ630-160 160 477 637 633
STQ630-200 200 517 717 696
STQ630-300 300 617 917 898
STQ630-500 500 817 1317 1250
STQ800-100 800 100 488 588 560 300 400 896 63MPA 7.5KW 11KW
STQ800-200 200 598 798 1040
STQ800-300 300 698 998 1380
STQ800-500 500 898 1398 1520
STQ1000-100 1000 100 530 630 600 320 450 1286 63MPA 7.5KW 11KW
STQ1000-200 200 630 830 1332
STQ1000-300 300 760 1060 1663

Our hydraulic jacks have been widely used for industrial field, such as steel plant, cement industry, chemical and refinery, bridge, railway, highway, hydropower station, ship repair, building, construction and maintenance.

4.Customer Praise:


6.Company information:
HangZhou Lead Equipment Co., Ltd. Have been in hydraulic tools industry since 2009. Our main products as follow:
Single acting hydraulic jack/cylinder/ram (10-100 tons)
Single acting hollow hydraulic jack/cylinder/ram (12-100 tons)
Double acting hydraulic jack/cylinder/ram (50-2000 tons)
Double acting hollow hydraulic jack/cylinder/ram (50-2000 tons)
Single acting hydraulic jack/cylinder/ram with lock nut (55-200 tons)
Thin type single acting hydraulic jack/cylinder/ram (10-200 tons)
Ultrathin hydraulic jack/cylinder/ram (10-200 tons)
Flange type hydraulic jack/cylinder/ram (10-630 tons)
Synchronous hydraulic jack (10-1000 tons)
Hydraulic accessories: high pressure oil hose, couplers, seal kits, mainfold, etc.
All the tonnage, stroke, height can be customized according to client’s requirements, supply the best quality and serve. Our warranty is 2 years.

Material: Stainless Steel
Usage: Automation and Control
Structure: Plunger Cylinder
Power: Hydraulic
Standard: Standard
Pressure Direction: Double-acting Cylinder


hydraulic cylinder

How do hydraulic cylinders compare to other methods of force generation like electric motors?

Hydraulic cylinders and electric motors are two different methods of force generation with distinct characteristics and applications. While both hydraulic cylinders and electric motors can generate force, they differ in terms of their working principles, performance attributes, and suitability for specific applications. Here’s a detailed comparison of hydraulic cylinders and electric motors:

1. Working Principle:

– Hydraulic Cylinders: Hydraulic cylinders generate force through the conversion of fluid pressure into linear motion. They consist of a cylinder barrel, piston, piston rod, and hydraulic fluid. When pressurized hydraulic fluid enters the cylinder, it pushes against the piston, causing the piston rod to extend or retract, thereby generating linear force.

– Electric Motors: Electric motors generate force through the conversion of electrical energy into rotational motion. They consist of a stator, rotor, and electromagnetic field. When an electrical current is applied to the motor’s windings, it creates a magnetic field that interacts with the rotor, causing it to rotate and generate torque.

2. Force and Power:

– Hydraulic Cylinders: Hydraulic cylinders are known for their high force capabilities. They can generate substantial linear forces, making them suitable for heavy-duty applications that require lifting, pushing, or pulling large loads. Hydraulic systems can provide high force output even at low speeds, allowing for precise control over force application. However, hydraulic systems typically operate at lower speeds compared to electric motors.

– Electric Motors: Electric motors excel in providing high rotational speeds and are commonly used for applications that require rapid motion. While electric motors can generate significant torque, they tend to have lower force output compared to hydraulic cylinders. Electric motors are suitable for applications that involve continuous rotary motion, such as driving conveyor belts, rotating machinery, or powering vehicles.

3. Control and Precision:

– Hydraulic Cylinders: Hydraulic systems offer excellent control over force, speed, and positioning. By regulating the flow of hydraulic fluid, the force and speed of hydraulic cylinders can be precisely controlled. Hydraulic systems can provide gradual acceleration and deceleration, allowing for smooth and precise movements. This level of control makes hydraulic cylinders well-suited for applications that require precise positioning, such as in industrial automation or construction equipment.

– Electric Motors: Electric motors also offer precise control over speed and positioning. Through motor control techniques such as varying voltage, frequency, or pulse width modulation (PWM), the rotational speed and position of electric motors can be accurately controlled. Electric motors are commonly used in applications that require precise speed control, such as robotics, CNC machines, or servo systems.

4. Efficiency and Energy Consumption:

– Hydraulic Cylinders: Hydraulic systems can be highly efficient, especially when properly sized and designed. However, hydraulic systems typically have higher energy losses due to factors such as fluid leakage, friction, and heat generation. The overall efficiency of a hydraulic system depends on the design, component selection, and maintenance practices. Hydraulic systems require a hydraulic power unit to pressurize the hydraulic fluid, which consumes additional energy.

– Electric Motors: Electric motors can have high efficiency, especially when operated at their optimal operating conditions. Electric motors have lower energy losses compared to hydraulic systems, primarily due to the absence of fluid leakage and lower friction losses. The overall efficiency of an electric motor depends on factors such as motor design, load conditions, and control techniques. Electric motors require an electrical power source, and their energy consumption depends on the motor’s power rating and the duration of operation.

5. Environmental Considerations:

– Hydraulic Cylinders: Hydraulic systems typically use hydraulic fluids that can pose environmental concerns if they leak or are not properly disposed of. The choice of hydraulic fluid can impact factors such as biodegradability, toxicity, and potential environmental hazards. Proper maintenance and leak prevention practices are essential to minimize the environmental impact of hydraulic systems.

– Electric Motors: Electric motors are generally considered more environmentally friendly since they do not require hydraulic fluids. However, the environmental impact of electric motors depends on the source of electricity used to power them. When powered by renewable energy sources, such as solar or wind, electric motors can offer a greener solution compared to hydraulic systems.

6. Application Suitability:

– Hydraulic Cylinders: Hydraulic cylinders are commonly used in applications that require high force output, precise control, and durability. They are widely employed in industries such as construction, manufacturing, mining, and aerospace. Hydraulic systems are well-suited for heavy-duty applications, such as lifting heavy objects, operating heavy machinery, or controlling large-scale movements.

– Electric Motors: Electric motors are widely used in various industries and applications that require rotational motion, speed control, and precise positioning. They are commonly found in appliances, transportation, robotics, HVAC systems, and automation. Electric motorsare suitable for applications that involve continuous rotary motion, such as driving conveyor belts, rotating machinery, or powering vehicles.In summary, hydraulic cylinders and electric motors have different working principles, force capabilities, control characteristics, efficiency levels, and application suitability. Hydraulic cylinders excel in providing high force output, precise control, and durability, making them ideal for heavy-duty applications. Electric motors, on the other hand, offer high rotational speeds, precise speed control, and are commonly used for applications that involve continuous rotary motion. The choice between hydraulic cylinders and electric motors depends on the specific requirements of the application, including the type of motion, force output, control precision, and environmental considerations.

hydraulic cylinder

Utilizing Hydraulic Cylinders in Conjunction with Alternative Energy Sources

Hydraulic cylinders can indeed be used in conjunction with alternative energy sources. The versatile nature of hydraulic systems allows them to be integrated with various alternative energy technologies to enhance efficiency, control, and power generation. Let’s explore some examples of how hydraulic cylinders can be utilized alongside alternative energy sources:

  1. Hydraulic Energy Storage: Hydraulic cylinders can be employed in energy storage systems that utilize alternative energy sources such as renewable sources (e.g., solar or wind) or waste energy recovery. These systems convert excess energy into hydraulic potential energy by pumping fluid into a high-pressure accumulator. When the energy is needed, the pressurized fluid is released, driving the hydraulic cylinder and generating mechanical power.
  2. Wave and Tidal Energy Conversion: Hydraulic cylinders can be utilized in wave and tidal energy conversion systems. These systems harness the power of ocean waves or tidal currents and convert it into usable energy. Hydraulic cylinders, along with associated pumps and valves, can be used to capture and control the energy from the waves or tides, driving the cylinders and generating mechanical power or producing electricity.
  3. Hydroelectric Power Generation: Hydraulic cylinders play a crucial role in traditional hydroelectric power generation. However, alternative approaches such as small-scale or micro-hydropower systems can also benefit from hydraulic cylinders. These systems utilize natural or man-made water flows to drive turbines connected to hydraulic cylinders, which then convert the hydraulic energy into mechanical power or electricity.
  4. Hydraulic Actuation in Wind Turbines: Hydraulic cylinders can be employed in wind turbines to enhance performance and control. For example, hydraulic pitch control systems use hydraulic cylinders to adjust the pitch angle of wind turbine blades, optimizing their aerodynamic performance based on wind conditions. This allows for efficient power generation and protection against excessive wind loads.
  5. Geothermal Energy Extraction: Geothermal energy extraction involves utilizing the natural heat from the Earth’s interior to generate power. Hydraulic cylinders can be utilized in geothermal systems to control and regulate fluid flow, allowing for efficient extraction and utilization of geothermal energy. They can also be used in geothermal heat pumps for heating and cooling applications.

In summary, hydraulic cylinders can be effectively utilized in conjunction with alternative energy sources to enhance energy storage, power generation, and control. Whether it’s through hydraulic energy storage systems, wave and tidal energy conversion, hydroelectric power generation, hydraulic actuation in wind turbines, or geothermal energy extraction, hydraulic cylinders offer versatile and efficient solutions for harnessing and utilizing alternative energy sources.

hydraulic cylinder

Can you provide real-world examples of machinery that heavily rely on hydraulic cylinders?

Hydraulic cylinders are widely used in various industries and applications due to their ability to provide powerful and precise linear motion. They play a crucial role in enabling the operation of heavy machinery that requires controlled force and movement. Here are some real-world examples of machinery that heavily rely on hydraulic cylinders:

1. Construction Equipment:

– Hydraulic cylinders are extensively used in construction machinery, such as excavators, bulldozers, loaders, and cranes. These machines rely on hydraulic cylinders to perform tasks like lifting heavy loads, extending and retracting booms, tilting buckets, and controlling the movement of various components. Hydraulic cylinders provide the power and precision required to handle the demanding conditions and heavy loads encountered in construction projects.

2. Agricultural Machinery:

– Many agricultural machines, including tractors, combine harvesters, and sprayers, utilize hydraulic cylinders for critical operations. Hydraulic cylinders are used to control the movement of attachments, such as front loaders, backhoes, and plows. They enable functions like lifting and lowering implements, adjusting cutting heights, and controlling the positioning of harvesting equipment. Hydraulic cylinders enhance efficiency and productivity in agricultural operations.

3. Material Handling Equipment:

– Hydraulic cylinders are integral components of material handling equipment, such as forklifts, pallet jacks, and cranes. These machines rely on hydraulic cylinders to lift and lower loads, tilt platforms or forks, and control the movement of lifting mechanisms. Hydraulic cylinders provide the necessary strength and precision to handle heavy loads and ensure safe and efficient material handling operations.

4. Industrial Machinery:

– Various industrial machinery and equipment heavily rely on hydraulic cylinders for critical functions. Examples include hydraulic presses, injection molding machines, metal-forming machines, and hydraulic-powered robots. Hydraulic cylinders enable precise control of force and movement in these applications, allowing for accurate shaping, pressing, and assembly processes.

5. Mining Equipment:

– Hydraulic cylinders are extensively used in mining machinery and equipment. Underground mining machines, such as continuous miners and longwall shearers, utilize hydraulic cylinders for cutting, shearing, and roof support operations. Surface mining equipment, including hydraulic shovels, draglines, and haul trucks, rely on hydraulic cylinders for tasks like bucket movement, boom extension, and vehicle suspension.

6. Automotive Industry:

– The automotive industry extensively utilizes hydraulic cylinders in various applications. Hydraulic cylinders are employed in vehicle suspension systems, power steering systems, convertible tops, and hydraulic brake systems. They enable smooth and controlled movement, precise steering, and efficient braking in automobiles.

7. Aerospace and Aviation:

– Hydraulic cylinders are utilized in aerospace and aviation applications, such as aircraft landing gear systems, wing flaps, and cargo handling equipment. Hydraulic cylinders provide the necessary force and control for extending and retracting landing gear, adjusting wing flaps, and operating cargo doors, ensuring safe and reliable aircraft operations.

8. Marine and Offshore Industry:

– Hydraulic cylinders are essential components in marine and offshore equipment, including ship cranes, winches, and hydraulic-powered anchor systems. They enable lifting, lowering, and positioning of heavy loads, as well as the control of various marine equipment.

These are just a few examples of machinery and industries that heavily rely on hydraulic cylinders. The versatility, power, and precise control offered by hydraulic cylinders make them indispensable in a wide range of applications, where controlled linear motion and force are essential.

China manufacturer 150 Ton High Tonnage Hydraulic Bottle Jack Cylinder   vacuum pump belt	China manufacturer 150 Ton High Tonnage Hydraulic Bottle Jack Cylinder   vacuum pump belt
editor by CX 2023-11-18

China Factory offering powful 32T hydraulic bottle jack with safety valve precision hydraulic cylinders

Warranty: 2 several years
Model Quantity: E0132
Type: Bottle Jack
Min Height: 255mm
Max Height: 405mm
Capacity (Load): 31-40T
Name: 32T hydraulic botttle jack
Shade: Blue
Substance: Iron
Packing: Shade Box
Lifting height: 150mm
N.W: 13kg
Port: ZheJiang Port
Top quality: higher&protected
Transportation: by sea
Ability: 32T
Packaging Specifics: Package deal of Hydraulic Jack: 2T~~6T :coloration box/blow circumstance For Mercedes Benz GL 420 ML three hundred ML 350 ML 450 Axle housing differential I=3,ninety I=3,09 I=3,70 North The usa(8.00%),South The usa(7.00%),Southern Europe(7.00%),Central America(6.00%),South Asia(6.00%),Northern Europe(5.00%),Domestic Market(5.00%),Eastern Asia(3.00%),Western Europe(3.00%),Oceania(00.00%). There are overall about 51-one hundred folks in our workplace.2. how can we guarantee high quality?Often a pre-manufacturing sample prior to mass productionAlways ultimate Inspection just before shipment3.what can you acquire from us?Hydraulic Bottle Jack,Hydraulic Flooring Jack,Motor Crane,Scissor Jack,Shop Press4. why should you purchase from us not from other suppliers?Epont has passed ISO / TS16949: 2009 , Very best Price 35 Hp Tiny Diesel Rubber Crawler Tractor And Areas Cost ISO9001:2015 quality administration method certification, completely carried out the quality management method, handed the environmental management program certification,and the jacks have handed CE, GS & TUV certification.5. what providers can we give?Recognized Delivery Conditions: FOB,CFR,CIF;Accepted Payment Forex:USD,EURAccepted Payment Sort: T/T,L/C,D/P D/A,PayPalLanguage Spoken:English,Chinese

hydraulic cylinders

Different Types of Hydraulic Cylinders

Generally, hydraulic cylinders are used in manufacturing machinery, construction equipment, and civil engineering. They are also used in elevators, and to provide unidirectional force.

Single-acting vs double-acting

Whether you are deciding on single-acting vs double-acting hydraulic cylinders for your application, it is important to understand the differences between the two so that you can make an informed decision. There are a number of advantages and disadvantages to both types, so choosing the right one for your application can be difficult.
Single-acting cylinders use compressed air to force the piston rod to extend, while double-acting cylinders use hydraulic fluid to actuate the piston rod. The piston rod is then returned to its original position after the pressure is released.
Double-acting cylinders have two ports that connect to the piston rod. Hydraulic fluid is pumped into the first port to extend the piston rod, while the second port provides pressure to the piston rod to retract it. The fluid exits through the other port. The cylinder’s pressure can be increased by increasing the fluid flow through the cylinder. This can also increase the speed of the cylinder.
Single-acting cylinders are cheaper to manufacture and install than double-acting cylinders. They are also easier to maintain. They also use fewer seals and valves than double-acting cylinders. However, they have a limited amount of control during operation. They also require a control system consisting of position valves. They are commonly used in reciprocating engines, hydraulic rams, and pumps. They are also useful for lifting equipment, lift shafts, and steering mechanisms.
Single-acting cylinders also have a certain rest state. If the power goes out, the cylinder will return to its resting position. However, if the springs wear out or the internal components break, the end of the stroke may be uncertain. This can be dangerous during power outages.
Unlike single-acting cylinders, double-acting cylinders provide stronger control and flexibility. They can be used in virtually any machine application. They are particularly useful for robotics, medical, and industrial tasks. They also provide more design options. They are also more energy efficient, but have a higher cost. They are also often more durable than single-acting cylinders.
Double-acting cylinders are available in a variety of sizes and designs. They are often used to control steering in excavators and TLBs. They are also used to move merchandise off conveyor belts. They are available in lightweight and high-tonnage models. They can also be used to control booms on TLBs. They have ISO standards compliance. They can also be converted to single-acting cylinders, if desired.
Single-acting cylinders are generally cheaper to manufacture and install, but they do not offer the same level of control as double-acting cylinders. They are also easier to repair, so they are often used in fixed applications. They are also available in a variety of sizes, including low-height models. They are also available in a variety or styles, including telescopic hydraulic cylinders. They are also available in many different applications, including lifting equipment, dump trailers, and platform truck trailers.hydraulic cylinders

Stainless steel vs steel

Stainless steel and steel hydraulic cylinders are both durable materials that offer many benefits to users. These hydraulic cylinders are used in a number of different industries, including food and beverage processing. The food processing industry has very strict guidelines for cleaning equipment, so stainless steel hydraulic cylinders are preferred.
Stainless steel is a material that is non-porous, which means that it prevents bacteria from settling on the surface of the cylinder. This is important because food processing equipment needs to be clean to ensure the safety of consumers. A stainless steel cylinder is also a good choice for areas that are susceptible to corrosive chemicals.
Another advantage of stainless steel is the tensile strength of the metal. This makes it perfect for hydraulic applications that produce high temperatures. It also has excellent heat resistance. While the material can easily withstand the heat, it may not be as durable in humid or wet environments. In these conditions, nitriding is used to increase the surface hardness of the metal. In addition, special construction may be used to reduce oxidation.
While stainless steel hydraulic cylinders are used in many industries, the food processing industry is among the most common. Food processing equipment is heavily used, and stainless steel ensures that components will last. This is particularly true in environments that frequently require washing.
One of the best features of stainless steel is its resistance to corrosion. Its alloy composition contains at least 10% chromium, which helps create a thin layer of chromium oxide. This oxide layer protects the metal from rusting, and it also improves the self-repairing qualities of the material. The alloy also contains molybdenum, which creates a non-porous surface. This is important in food processing equipment because it prevents food particles from adhering to the surface. It also helps eliminate downtime due to contamination.
Stainless steel hydraulic cylinders are also durable, and they can withstand frequent cleaning. They are also used in equipment that is washdown-ready. The cylinders’ surfaces may be polished to achieve a satin finish, which is noticeable by fine, uniform grit lines across the stainless steel. The surface may also be coated in a variety of paints. This helps prevent bacteria from settling on the surface of the metal, and it also prevents food particles from sticking to the cylinder.
Another benefit of stainless steel hydraulic cylinders is that they can be used in environments that are highly contaminated with corrosive chemicals. They are especially suited for offshore oil rigs, where they are exposed to aqueous corrosion. They are also favored for use in the metals industry, as well as in pulp and paper mills. They are also used in a number of other applications, including cold press juicers and chocolate molding machines.
Stainless steel hydraulic cylinders also tend to have a streamlined design. They also may have end caps, which help prevent catch points and mounting holes. This prevents bacteria from settling on the surface and helps to eliminate downtime due to contamination.hydraulic cylinders


Whether you are an engineer or an owner of hydraulic cylinders, you know the importance of protecting your components from corrosion and wear. Hydraulic cylinders are designed to perform in high temperatures and high pressures, and they can be damaged by environmental conditions or mechanical deformations. The proper coating of hydraulic cylinders is essential to reduce wear and tear, and reduce the risk of corrosion and adhesion. If your hydraulic cylinders are damaged, the result can be expensive repairs.
Hydraulic cylinders are used in a variety of industries, including automotive, aerospace, marine, oil and gas, and offshore. The cylinders are primarily designed for high cycle applications, which can increase wear. However, they can be used in other types of applications as well.
There are several coating methods available on the market. One process is the electro galvanizing process. This process involves the use of electricity to deposit a zinc coating on the hydraulic cylinder. This coating can protect the cylinder for a lifetime. There are several methods to choose from, depending on the thickness of the coating.
Another method is the electro-plating process. This method has been used to coat hydraulic cylinders for offshore applications. However, the European Union nearly banned the process due to environmental concerns. The process is also used to coat corrosion resistant nickel-based alloys. Using this technology allows companies to coat hydraulic cylinders without having to involve a coater. The process is also easy to integrate.
One alternative coating process is thermal spray. This process uses engineered materials to deposit metallic or ceramic materials onto the surface. The spray is then used to enhance the surface, restoring damaged hydraulic rods, or preventing future breakdowns. Thermal spray also increases wear life.
Another coating process is the hard chrome over nickel process. Traditionally, hard chrome plating is used on hydraulic cylinder rods. However, this method has largely fallen out of favor. The main reason for hydraulic cylinder failure is corrosion of the piston rod surface. If your cylinder is exposed to rust, you may have to replace the cylinder barrel. Using a hard chrome over nickel coating can help to prevent corrosion.
Another coating process is a nickel sub-coating. Similar to a chromium trioxide-based coating, this provides corrosion resistance. It also provides a hard surface.
These coatings can be used in various hydraulics applications, including ball valves, brake pistons, and loader cylinders on compact tractors. Despite the fact that the process provides adequate corrosion resistance, some branches will not accept it, because of the nickel leaching that may occur. Unlike a chromium trioxide-based coating, a nickel sub-coating can be used on oil-based actuators, which may be prone to wear.
There are many types of hydraulic cylinders. Each type is designed for a different application. They all have different surface properties. These properties affect seal performance, leakage, and friction. If your hydraulic cylinders are not properly coated, they may rust, damage seals, and wear out prematurely.
China Factory offering powful 32T hydraulic bottle jack with safety valve     precision hydraulic cylindersChina Factory offering powful 32T hydraulic bottle jack with safety valve     precision hydraulic cylinders
editor by czh 2023-07-03