Tag Archives: couplings hydraulic

China Custom Industrial Flexible High Pressure Steel Wire Hydraulic Rubber Fuel Oil Hose Fitting Couplings Factory

Product Description

                                                    Rubber Smooth Cover Fuel Oil Hose

Tube: black NITRIL rubber tube, oil and fuel resistant, smooth
Reinforcement: textile braided high tensile synthetic yarn
Cover: black smooth NEOPRENE rubber, oil, ozone, weather, abrasion resistant
Applications: in fuel systems like gasoline, diesel fuel, also suitable for loading and unloading tank cars, automobiles, oil refine and oil related industrial, etc.
Temperature: -40°C + 100°C
Length: 40, 50, 100M
Packing: transparent P.V.C. film or Weaving bags

ID (mm) ID (inch) Wall (mm) WP (bar) BP (bar) Radius (mm) Weight (kg/m)
6 1/4 3.5 20 60 23 0.18
8 5/16 3.5 20 60 28 0.21
10 3/8 3.5 20 60 35 0.27
13 1/2 4 20 60 58 0.41
16 5/8 4.5 20 60 78 0.5
19 3/4 4.75 20 60 105 0.68
25 1 5.5 20 60 130 0.92

HYROTECH Strength:
 

1.Competitive Prices
 

2.Only produce high quality products
 

3.Raw Material quality strictly checked before production
 

4.Various tests before shipping to make sure stable quality
 

5.Very fast delivery time


 

HangZhou CHINAMFG Rubber & Plastic Products Co., Ltd

 

Company Introduction:

HYROTECH is a leading manufacturer of various rubber hoses & related accessories in China for more than 10 years.

Our products have been sold to more than 60 countries, including USA,Brazil, Colombia, Chile, Argentina, Peru, Russia, Ukraine,Thailand, Spain,UAE, Saudi Arabia,Iran, etc. 

Factory Show

Our factory covers an area of 20000 square CHINAMFG workship with a total invest ment up to RMB 100 million.

We own 100 sets of different equipment for production, testing and employ more than 200 staffs, including 15 technicians.

Our Annul output is 10 million CHINAMFG for hydraulic hoses and 5 million  CHINAMFG for industrial hoses.

Contact us

We are waiting for you, please feel free to contact us. We will produce stable and high quality product for you

 

 

 

rubber coupling

Impact of Elastomer Element Design on Rubber Coupling Performance

The design of the elastomer elements in a rubber coupling plays a critical role in determining its overall performance and capabilities. The elastomer elements are the heart of the coupling, responsible for transmitting torque, absorbing vibrations, and accommodating misalignments. The following aspects of elastomer element design significantly impact the coupling’s performance:

  • Elastomer Material: The choice of elastomer material influences the coupling’s flexibility, damping characteristics, and resistance to wear. Different elastomers offer varying levels of resilience, chemical resistance, and temperature tolerance. Common elastomers used include natural rubber, synthetic rubber compounds, and polyurethane.
  • Elastomer Hardness (Durometer): The durometer hardness of the elastomer affects its flexibility and ability to absorb vibrations. Softer elastomers have higher damping capabilities but may offer less torsional stiffness. Harder elastomers provide better torque transmission but may have reduced vibration isolation.
  • Elastomer Shape and Geometry: The shape and geometry of the elastomer elements influence their flexibility and deformation characteristics. Different designs, such as cylindrical, star-shaped, or spider-shaped elements, affect the coupling’s ability to accommodate misalignments and transmit torque smoothly.
  • Elastomer Bonding: The way the elastomer is bonded to the coupling’s hubs or inserts impacts the coupling’s overall durability and reliability. Proper bonding ensures that the elastomer effectively transfers torque and maintains its properties over time.
  • Elastomer Properties Over Temperature: Elastomers can exhibit changes in performance with temperature fluctuations. Understanding how the chosen elastomer material behaves at different temperatures is essential for applications with varying operating conditions.

The design of the elastomer elements is a delicate balance between providing flexibility for vibration isolation and misalignment compensation while ensuring adequate torque transmission and overall coupling stiffness. Engineers must carefully select elastomer materials and design features based on the specific requirements of the application to achieve optimal coupling performance.

rubber coupling

Comparison of Rubber Couplings with Other Flexible Coupling Types

Rubber couplings, elastomeric couplings, and disc couplings are all flexible coupling options used in various mechanical systems. Here’s a comparison of rubber couplings with these alternatives:

Rubber Couplings:

  • Transmit torque while damping vibrations through the flexibility of rubber elements.
  • Provide good misalignment compensation and shock absorption.
  • Relatively simple construction and cost-effective.
  • Effective in reducing noise and vibration in applications.
  • Suitable for moderate to high torque applications with moderate misalignment.

Elastomeric Couplings:

  • Similar to rubber couplings, utilize elastomeric materials for flexibility and vibration damping.
  • Offer higher torque capacity and stiffness compared to rubber couplings.
  • Provide better misalignment compensation and torsional stiffness.
  • Wider range of sizes and configurations for various applications.
  • Commonly used in pumps, compressors, and other machinery.

Disc Couplings:

  • Use a series of metal discs to transmit torque and accommodate misalignment.
  • Offer high torsional stiffness and accuracy in torque transmission.
  • Can handle higher speeds and torque compared to rubber or elastomeric couplings.
  • Require precision in manufacturing and installation.
  • Used in applications requiring high precision and minimal backlash.

When choosing between these flexible coupling types, considerations such as torque requirements, misalignment compensation, torsional stiffness, and application-specific needs play a significant role in making the appropriate selection. Each type has its advantages and limitations, making it important to assess the specific requirements of the machinery system.

rubber coupling

Challenges of Misaligned Rubber Couplings and Their Resolution

Misaligned rubber couplings can lead to several challenges that impact the performance and reliability of machinery. These challenges include:

1. Reduced Efficiency: Misalignment can result in increased friction, causing energy loss and reduced efficiency in power transmission.

2. Increased Wear: Misaligned rubber couplings can cause uneven wear on the coupling’s rubber element and other connected components, leading to premature failure.

3. Vibrations and Noise: Misalignment can cause vibrations and noise, which not only affect the machinery’s operation but also contribute to discomfort for operators.

4. Overloading: Misalignment can lead to uneven loading on the coupling and connected components, potentially causing overloading and damage.

5. Premature Failure: Continuous operation with misaligned couplings can accelerate wear and fatigue, leading to premature failure of the coupling and other components.

To resolve these challenges, proper alignment practices are crucial:

1. Regular Maintenance: Perform routine inspections to identify misalignment and other issues early, allowing for timely adjustments.

2. Precise Installation: Ensure accurate alignment during the installation process to prevent initial misalignment.

3. Laser Alignment: Use laser alignment tools for accurate and reliable alignment between shafts.

4. Corrective Measures: If misalignment is detected, take corrective actions promptly to restore proper alignment.

5. Balancing Loads: Distribute loads evenly across the coupling and connected components to prevent overloading.

By addressing misalignment challenges proactively and adopting appropriate maintenance practices, the longevity and performance of rubber couplings can be significantly improved, minimizing downtime and maintenance costs in industrial applications.

China Custom Industrial Flexible High Pressure Steel Wire Hydraulic Rubber Fuel Oil Hose Fitting Couplings Factory  China Custom Industrial Flexible High Pressure Steel Wire Hydraulic Rubber Fuel Oil Hose Fitting Couplings Factory
editor by CX 2023-12-14

China Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings coupling electrical

Product Description

Fluid coupling 

Product Application

Improve the starting capability of electric motor, protect motor against overloading, damp shock, load fluctuation and torsional vibration, and balance and load distribution in case of multimotor drives.Belt conveyers, csraper conveyers, and conveyers of all kinds Bucket elevators, ball mills, hoisters, crushers, excavators, mixers, straighteners, cranes, etc.

Main Features

1. Applies to flexible drive shaft ,allowing a larger axial radial displacement and displacement.
2.Has a simple structure,easy maintenance .
3.Disassembly easy
4.low noise
5.Transmission efficiency loss,long useful working life.

 

Related Products

       
Our Company

Ever-power Group specialist in making all kinds of mechanical transmission and hydraulic transmission like: planetary gearboxes, worm reducers, in-line helical gear speed reducers, parallel shaft helical gear reducers, helical bevel reducers, helical worm gear reducers, agricultural gearboxes, tractor gearboxes, auto gearboxes, pto shafts, special reducer & related gear components and other related products, sprockets, hydraulic system, vacuum pumps, fluid coupling, gear racks, chains, timing pulleys, udl speed variators, v pulleys, hydraulic cylinder, gear pumps, screw air compressors, shaft collars low backlash worm reducers and so on. furthermore, we can produce customized variators, geared motors, electric motors and other hydraulic products according to customers’ drawings.

We provides a reliable grantee for the product’ s quality by advanced inspection and testing equipment. professional technical team, exquisite processing technology and strict control system. 
In recent years, the company has been developing rapidly by its rich experience in production, advanced management system, standardized management system, strong technical force. We always adhere the concept of survival by quality, and development by innovation in science and technology. 
Our Group is willing to work with you hand in hand and create brilliance together! 

Material available
Low carbon steel, C45, 20CrMnTi, 42CrMo, 40Cr, stainless steel. Can be adapted regarding customer requirements.
Surface treatment
Blacking, galvanization, chroming, electrophoresis, color painting, …

 

Heat treatment
High frequency quenching heat treatment, hardened teeth, carbonizing, nitride, …
 
Certifications
FAQ:

Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment.

Q: What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.

If you have another question, please feel free to contact us.

Packing & Delivery
 

 

 

 

Type: Custom
Usage: Agricultural Products Processing, Farmland Infrastructure
Material: Custom
Power Source: Custom
Weight: Custom
After-sales Service: 5 Years

gearbox

Understanding the Different Types of Couplings

A coupling is a device that joins two rotating shafts together. It transmits power from one to the other and is designed to allow some amount of end-movement and misalignment. It is a simple mechanism that is extremely common in many industries. Learn more about couplings in this article.

Flexible coupling

When choosing the correct flexible coupling for your application, there are several factors to consider. One of the most important factors is backlash, which is the amount of rotational play introduced by moving parts. Other factors to consider include lubrication and accessibility for maintenance. Choosing the right flexible coupling can be challenging, but it is possible to find the right fit for your specific application.
A flexible coupling is an excellent choice for applications that require high alignment accuracy, which is essential for reliable system performance. These couplings can compensate for angular and parallel misalignment, ensuring proper positioning between the driving and driven shafts. In addition, flexible couplings are more affordable than most traditional couplings.
The most common flexible coupling is the elastomeric type, which uses a resilient material to transmit torque. These couplings can be made of plastic or rubber. In either case, they can be relatively lightweight compared to other types of couplings. Elastomeric couplings can also be used for high-speed applications.
Another important factor to consider when selecting the best Flexible Coupling is the pipe you’re connecting. Some couplings are easier to install than others, and some even have tapered edges to make them slide easily on the pipe. Regardless of the choice you make, it’s crucial to remember that proper installation is critical for reliability and safety.

CZPT coupling

An CZPT coupling is a flexible, mechanical coupling that features a high degree of angular misalignment and eccentricity. They are available in different lengths, with MOL being the longest. They are ideal for applications that involve high parallel misalignment, limited assembly access, electrical insulation, and other conditions.
CZPT couplings are a versatile type of coupling, and they are often used to connect parallel shafts. They work by transmitting torque from one to the other using the same speed and rotation mechanism. They are available in various materials, including aluminum, brass, and polymers. In addition, they can work under high temperatures.
One of the main benefits of using an CZPT coupling is the fact that it does not require the use of a gearbox. These couplings are flexible, and their design allows them to cope with misalignment problems that may occur in power transmission applications. They are also able to absorb shock.
Another advantage of CZPT couplings is that they are suitable for systems with low-to-medium amounts of shaft misalignment. Because their friction is limited to the surface of the hubs, they are able to accommodate low bearing loads. CZPT couplings can also be used in systems with limited shaft access, since the disks are easily removed.

Clamped coupling

Clamped couplings are designed to provide a high-strength connection between two objects. A standard coupling has two parts: a nipple and a clamp sleeve. Each part is designed in such a way as to cooperate with each other. The sleeve and clamp are made of rubber. A reinforcing braid is often used to protect the exposed steel braid from rusting.
PIC Design provides a wide variety of standard clamping couplings for many different industries. These include medical, dental, military, laboratory, and precision industrial control equipment. They have a simple design that makes them ideal for these applications. Clamped couplings are also available for custom manufacturing. These couplings are available in metric, inch, and Metric.
The most common type of clamp coupling is a hose clamp. This type of coupling is used to connect two hoses or piping units. It consists of two conical binding sleeves that fit into the ends of the two parts. The coupling is then tightened with a screwdriver. It’s a versatile coupling because it allows two piping units or hoses to be joined together.
Another type of clamp coupling is the two-piece clamp coupling. The two-piece design allows for a quick and easy installation. Unlike other types of couplings, the clamp coupling is not necessary to remove the bearings before installing it. Its keyway is designed with shims in place so that it fits over the shaft. These couplings are available in different sizes, and they are made of steel or dutile iron.
gearbox

Helicoidal coupling

Helicoidal coupling is a form of nonlinear coupling between two molecules. It occurs when the molecules in a double helix are subjected to oscillations. These oscillations can occur either in the right or left-handed direction. These oscillations are called solitons. Helicoidal coupling can provide quantitative or qualitative support to a structure, such as an electron.

Split Muff coupling

The Split-Muff Coupling market report provides detailed market analysis and key insights. The study covers the market size, segmentation, growth and sales forecast. It also examines key factors driving the market growth and limiting its development. The report also covers current trends and vendor landscapes. Therefore, you can get a deep understanding of the Split-Muff Coupling industry and make the right business decisions.
The report also provides data on the competitive landscape and the latest product and technology innovations. It also provides information on market size, production and income. It also covers the impact of the COVID-19 regulations. The market report is a valuable resource for companies looking to expand their businesses, or to improve existing ones.
In terms of application, Split-Muff Couplings can be used in light to medium duty applications. They are shaped like a semi-cylindrical disc that fits over a shaft. Both parts are threaded for assembly and disassembly. It can be disassembled easily and quickly, and can be used for medium to heavy-duty applications with moderate speeds.
Split Muff couplings are the most popular type of couplings for transferring wet and abrasive materials. Their flanged end fits on most major brands of smooth material muff hoses. In addition, this type of coupling is corrosion-resistant and easy to install. It also does not require any adjustments to the drive shaft’s position.
gearbox

Flexible beam coupling

The Flexible beam coupling is one of the most popular types of couplings in the industry. It is comprised of two sets of parallel coils separated by a solid member, and it offers a wide range of torsional stiffness. These couplings are made of aluminum alloy or stainless steel. They offer excellent flexibility and are less expensive than many other types of couplings. They also require zero maintenance and can tolerate shaft misalignment.
Beam couplings are categorized into two types: helical and axial. The former is characterized by a high degree of flexibility, while the latter is used to compensate for higher misalignment. Both types are suitable for small torque applications and are available in a wide range of shaft sizes.
Flexible beam couplings are available in metric and US sizes, and feature a variety of options. They feature stainless steel or aluminum materials and are highly durable and corrosion-resistant. They also offer high torque capacities and excellent fatigue resistance. Flexible beam couplings are available with a wide range of options to meet your unique application needs.
China Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings   coupling electricalChina Professional Yox-250 Hydraulic Air Coupling Constant Filling Fluid Couplings   coupling electrical
editor by CX 2023-07-13

China Flexible High Pressure Hydraulic Hose Pipe Line Quick Disconnect Couplings Branch Tee Hydraulic hose adapters ac coupling

Situation: New
Warranty: 1.5 several years
Showroom Area: None
Variety: Fittings
Strain: –
Construction: –
Bodyweight: .thirteen
Electricity: –
Dimension(L*W*H): 10*ten*fourteen
Item identify: Hydraulic Hose Fittings
Content: Carbon Steel
Coloration: Customer’s Request
MOQ: one hundred
Area treatment method: Zinc Plating
Shipping TIME: Mass Production : 15~thirty Days
Bundle: Carton Box+picket Circumstance
Edge: Large-top quality
Packing: CZPT Packing
Technics: CNC Maching
Packaging Information: plastic luggage interior and carton !
Port: HangZhou/ZheJiang

Merchandise Description

QUICK Information
1. MaterialCarbon metal , Stainless metal and many others.
2. ColorSilver or Yellow
5. OEM Accepted Yes
6. Certification Accessible IS09001:2008
7. Type tee , union , connector , coupling , cross ,etc
8. Engineering CNC Machining
9. Surface area Therapy Trivalent zinc in addition shut , trivalent chromium zinc。chrome plate , CNC Machining Parts Spur Generate Gear zn-ni , etc
10.Salt Spray Check 36 hrs , 72 hours, one hundred forty four hours , 200 hrs , 1 000 several hours ,and so on
11.Mediumwater, oil,gasoline, and many others
12.SoftwareUse with Braided/Spiral Hoses , 60mm Right Angle Spur Planetary Gearbox With Sq. Flange Output For Nema23 Servo Motor Actual physical Construction , Hydraulic Installation ,Auto Areas
Firm Profile Our business is specialized in producing automotive chassis channels and fittings, motor pipeline fittings, all types of pneumatics and hydraulic fittings and pipeline fittings. Our firm implements an ISO9001 top quality management method, and has productively turn out to be the primary or secondary supplier for CZPT liberation, DFAC, Foton, Weicai Energy, XCMG, R Series Helical Bevel Equipment Boxgearbox With Motoruse Of Helical Equipment Box and so on., and has exported our products to the United States, Russia, Turkey and so on.Our business is located in Diankou Town, HangZhou metropolis, in the east of HangZhou metropolis, in the north of HangZhou, only thirty minutes absent from Xihu (West Lake) Dis. Global Airport, so the transportation is quite practical.Our company handles an region of 11,000 sq. meters, 28L High Seen Ultralight Open Drinking water Inflatable Swimming Equipment Float Security Swim Saver Buoy, Dry Bag with Adjustable Waist Belt with potent engineering, advanced products and comprehensive testing tools. We are hunting CZPT to cooperating with consumers equally at residence and abroad. Our Rewards

What Is a Coupling?

A coupling is a device used to connect two shafts. It transmits power between them and allows for some misalignment or end movement. There are several types of couplings. The most common ones are gear couplings and planetary couplings. However, there are many others as well.

Transfer of energy

Energy coupling is a process by which two biological reactions are linked by sharing energy. The energy released during one reaction can be used to drive the second. It is a very useful mechanism that synchronizes two biological systems. All cells have two types of reactions, exergonic and endergonic, and they are connected through energy coupling.
This process is important for a number of reasons. The first is that it allows the exchange of electrons and their energy. In a single molecule, this energy transfer involves the exchange of two electrons of different energy and spin. This exchange occurs because of the overlap interaction of two MOs.
Secondly, it is possible to achieve quadratic coupling. This is a phenomenon that occurs in circular membrane resonators when the system is statically deflected. This phenomenon has been gaining a great deal of interest as a mechanism for stronger coupling. If this mechanism is employed in a physical system, energy can be transferred on a nanometer scale.
The magnetic field is another important factor that affects the exchange of energy between semiconductor QWs. A strong magnetic field controls the strength of the coupling and the energy order of the exciton. The magnetic field can also influence the direction of polariton-mediated energy transfer. This mechanism is very promising for controlling the routing of excitation in a semiconductor.
gearbox

Functions

Couplings play a variety of functions, including transferring power, compensating for misalignment, and absorbing shock. These functions depend on the type of shaft being coupled. There are four basic types: angular, parallel, and symmetrical. In many cases, coupling is necessary to accommodate misalignment.
Couplings are mechanical devices that join two rotating pieces of equipment. They are used to transfer power and allow for a small degree of end-to-end misalignment. This allows them to be used in many different applications, such as the transmission from the gearbox to the differential in an automobile. In addition, couplings can be used to transfer power to spindles.

Types

There are two main types of couplings: rigid and flexible. Rigid couplings are designed to prevent relative motion between the two shafts and are suitable for applications where precise alignment is required. However, high stresses in the case of significant misalignment can cause early failure of the coupling. Flexible couplings, on the other hand, allow for misalignment and allow for torque transmission.
A software application may exhibit different types of coupling. The first type involves the use of data. This means that one module may use data from another module for its operation. A good example of data coupling is the inheritance of an object. In a software application, one module can use another module’s data and parameters.
Another type of coupling is a rigid sleeve coupling. This type of coupling has a pipe with a bore that is finished to a specified tolerance. The pipe contains two threaded holes for transmitting torque. The sleeve is secured by a gib head key. This type of coupling may be used in applications where a couple of shafts are close together.
Other types of coupling include common and external. Common coupling occurs when two modules share global data and communication protocols. This type of coupling can lead to uncontrollable error propagation and unforeseen side effects when changes are made to the system. External coupling, on the other hand, involves two modules sharing an external device interface or communication protocol. Both types of coupling involve a shared code structure and depend on the external modules or hardware.
Mechanical couplings are essential in power transmission. They connect rotating shafts and can either be rigid or flexible, depending on the accuracy required. These couplings are used in pumps, compressors, motors, and generators to transmit power and torque. In addition to transferring power, couplings can also prevent torque overload.
gearbox

Applications

Different coupling styles are ideal for different applications, and they have different characteristics that influence the coupling’s reliability during operation. These characteristics include stiffness, misalignment capability, ease of installation and maintenance, inherent balance, and speed capability. Selecting the right coupling style for a particular application is essential to minimize performance problems and maximize utility.
It is important to know the requirements for the coupling you choose before you start shopping. A proper selection process takes into account several design criteria, including torque and rpm, acoustic signals, and environmental factors. Once you’ve identified these parameters, you can select the best coupling for the job.
A gear coupling provides a mechanical connection between two rotating shafts. These couplings use gear mesh to transmit torque and power between two shafts. They’re typically used on large industrial machines, but they can also be used in smaller motion control systems. In smaller systems, a zero-backlash coupling design is ideal.
Another type of coupling is the flange coupling. These are easy to manufacture. Their design is similar to a sleeve coupling. But unlike a sleeve coupling, a flange coupling features a keyway on one side and two threaded holes on the other. These couplings are used in medium-duty industrial applications.
Besides being useful for power transmission, couplings can also prevent machine vibration. If vibration occurs in a machine, it can cause it to deviate from its predetermined position, or damage the motor. Couplings, however, help prevent this by absorbing the vibration and shock and preventing damage to expensive parts.
Couplings are heavily used in the industrial machinery and electrical industries. They provide the necessary rotation mechanism required by machinery and other equipment. Coupling suppliers can help customers find the right coupling for a specific application.
gearbox

Criteria for selecting a coupling

When selecting a coupling for a specific application, there are a number of different factors to consider. These factors vary greatly, as do operating conditions, so selecting the best coupling for your system can be challenging. Some of these factors include horsepower, torque, and speed. You also need to consider the size of the shafts and the geometry of the equipment. Space restrictions and maintenance and installation requirements should also be taken into account. Other considerations can be specific to your system, such as the need for reversing.
First, determine what size coupling you need. The coupling’s size should be able to handle the torque required by the application. In addition, determine the interface connection, such as straight or tapered keyed shafts. Some couplings also feature integral flange connections.
During the specification process, be sure to specify which materials the coupling will be made of. This is important because the material will dictate most of its performance characteristics. Most couplings are made of stainless steel or aluminum, but you can also find ones made of Delrin, titanium, or other engineering-grade materials.
One of the most important factors to consider when selecting a coupling is its torque capability. If the torque rating is not adequate, the coupling can be damaged or break easily. Torque is a major factor in coupling selection, but it is often underestimated. In order to ensure maximum coupling performance, you should also take into consideration the size of the shafts and hubs.
In some cases, a coupling will need lubrication throughout its lifecycle. It may need to be lubricated every six months or even once a year. But there are couplings available that require no lubrication at all. An RBI flexible coupling by CZPT is one such example. Using a coupling of this kind can immediately cut down your total cost of ownership.
China Flexible High Pressure Hydraulic Hose Pipe Line Quick Disconnect Couplings Branch Tee Hydraulic hose adapters     ac couplingChina Flexible High Pressure Hydraulic Hose Pipe Line Quick Disconnect Couplings Branch Tee Hydraulic hose adapters     ac coupling
editor by czh 2023-03-14