Hoses
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The company has made more than 100 scientific and technological innovation achievements and obtained 28 national patents.
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The company has now developed into a high-tech enterprise with complete products, excellent quality, large scale and strong production capacity in the same industry.
What is Hoses
Hose is a flexible tube that conveys media for various purposes. It can be used for multiple applications from commercial like garden hose to industrial such as wastewater hose, steam hose, chemical hose, etc. Industrial hose can be used in pharmaceutical, chemical, oil & gas, woodwork, Food & Beverage, aerospace etc.
Exceptional durability
One of the standout benefits of hoses is their exceptional durability. Built to withstand even the harshest of conditions, they resist weathering, corrosion, and physical damage. These hoses are typically made of stainless steel or other high-strength, ensuring longevity even in applications involving high temperatures, pressure, or corrosive materials. When you choose hoses, you are investing in a product that is built to last, saving you money and time in the long run.
Outstanding flexibility
Despite their strength and durability,Hoses offer outstanding flexibility. They are designed to maintain their structural integrity even when bent or twisted, making them ideal for applications that require complex routings or connections. Unlike rigid pipe systems, these flexible alternatives can accommodate movements and vibrations in your system without compromising performance.
High temperature and pressure resistance
Hoses have an innate ability to withstand high temperatures and pressures, making them the ideal choice for numerous industrial applications. Whether your operations involve steam lines, cryogenic systems, or anything in between, these hoses can handle it. They keep their shape and functionality even under extreme thermal or pressure conditions, providing you with reliability where you need it most.
Easy installation
Installing hoses is generally more straightforward and less time-consuming compared to their rigid counterparts. Thanks to their flexibility, they can be maneuvered easily into tight spaces, reducing the need for complicated pipe configurations or additional fittings. This not only cuts down on installation time but also reduces the potential for leak points in your system.
Types of Hoses
Industrial PVC HosePVC (polyvinyl chloride) hoses see an awful lot of uses. Applications such as potable water, beverage dispensing, chemical dispensing, multipurpose air, and water, and many, many more. PVC is in a category all its own that reaches into a lot of the categories discussed prior, so what we see is a category not defined by its use, but rather its material.
Steam hose, to an extent, runs the gamut when it comes to construction: there's EPDM, nitrile in instances where oil resistance is needed, and chlorobutyl in more premium varieties, like when you need a hose that is going to stand the test of time. Most of these will handle temperatures north of 406°F for saturated steam and 450°F for superheated steam, with pressures up to 250 psi. on average. Due to the dangerous nature of steam at higher temperatures and pressures, this is one of the few hose applications where we see a safety factor of 10:1 vs the standard 4:1. Steam can be incredibly dangerous. Depending on the type, temperature, and saturation, steam isn't always visible, so an increased safety factor is prudent.
Industrial Water HoseThis may seem like a rather straightforward category of industrial hose. To an extent, it can be. Water hose is generally made from one of three materials: EPDM or SBR for suction and PVC for discharge. For the most part, EPDM is the most common tube for water hose, especially when the hose is being used as a transfer hose. If your application is suction, your hose will require a helical wire to prevent the hose from collapsing.
Welding hoses are possibly the easiest to visually identify. You have green hose for oxygen, and a red hose for burning gas. The hose commonly comes as twin-line; however, you can buy these lines individually. Welding hoses are rated to either Grade-T, which has greater oil resistance (in a steel mill or a shop), or Grade-R, which will have reduced resistances to oil.Needless to say—though, we'll say it anyway—when dealing with something that can be as dangerous as burning hose, it's important to know your application and the environment in which these hoses are being used to ensure safety. When it comes down to it, choosing a welding hose isn't much more complicated than deciding whether you need Grade-T or Grade-R. We carry Grade-T for most calls.
Application of Hoses
Construction
Hydraulic hoses are commonly used in construction equipment such as cranes, excavators, and bulldozers to power hydraulic cylinders that control movement and lift heavy loads.
Agriculture
Hydraulic hoses are used in farm equipment such as tractors and harvesters to power hydraulic cylinders that control the movement of attachments such as plows and sprayers.
Mining
Hydraulic hoses are used in mining equipment such as drills and excavators to power hydraulic motors that drive the machinery and hydraulic cylinders that control movement.
Manufacturing
Hydraulic hoses are used in manufacturing equipment such as presses and injection molding machines to power hydraulic cylinders that control the movement of the equipment.
Aerospace
Hydraulic hoses are used in aircraft to power hydraulic actuators that control the movement of the landing gear, brakes, and flaps.
Automotive
Hydraulic hoses are used in vehicles to power the braking system, power steering system, and suspension system.
Marine
Hydraulic hoses are used in marine equipment such as cranes and winches to power hydraulic cylinders that control movement and lift heavy loads.
How to Differentiate Between a Hose and a Pipe?
Function
Pipes are referred to as rigid tubes, whereas metal corrugated hoses are considered as a flexible alternatives. The functions of pipes and hoses can't be exaggerated as they both serve mostly the same purpose of conveying fluids or gases but in different architectural setups.But, to help you give clarity, let's try and understand the core functions of each of them. Metal corrugated hoses are leak-tight and are mostly used for transferring gases or fluids as the vacuum lines or while under pressure. The unique design helps achieve both pressure resistance and flexibility. They are used for transferring various materials such as chemicals, water, air and others.
Building Material
Hoses being used in industries are built as metallic corrugated hose, composite hose and rubber hose. Composite hoses are meant to resist temperature and pressure immensely, which makes them ideal for being used in high-pressure applications.Moreover, they are also anti-static, which makes them suitable for being used even in explosive environments. Rubber hoses, on the other hand, are quite flexible, durable and versatile. Rubber hoses are the ones mostly used in the conveying systems for both bends as well as pipelines.
Flexibility
The primary difference between pipe and hose is due to the materials being used for its making. And that also affects their flexibility quotient! Metallic corrugated hoses are often considered more flexible than that of the pipes. In comparison to the rigid traditional pipes, metal hoses can be routed easily at the application area.The metal hoses are meant to absorb the vibrations, withstand thermal expansion, and bear the contractions. In addition to that, metal hoses are resistant to penetration, permeation and abrasion. This property is what makes the metal corrugated or steel braided hoses ideal for liquid or gas transfers, as they can handle the worst of temperatures or pressures.
DESIGN
Hoses undergo designing based on their performance and application. But, they are often customised based on weight, rating, chemical compatibility and pressure to suit different environments. Metallic hoses are designed with the compensation of thermal expansion, which is the root triggering factor of its flexibility quotient.On the other hand, the pipes are meant to transport fluids, which are specifically utilised for the fabrication, railings and structural applications. Pipes are designed in a way such that they can last for a longer time than that of the hoses.
Size
The hose I.D. must be sized accurately to obtain the proper flow velocity. A flow that's too slow results in sluggish system performance and a flow that's too high causes excessive pressure drops, system damage, and leaks. Use the Flow Capacity Nomogram to determine the proper hose I.D. for your application's flow rate requirements.The fluid power industry uses a system of measurement called Dash Numbers or Dash Sizes to identify hose and fitting size. The Dash Number is the measure of a hose's Inner Diameter (I.D.) in sixteenths of an inch. (See the chart on the Dash Number page for complete details and exceptions.)
Temperature
Both media temperature (the temperature of the media conveyed through the hose) and the ambient temperature (the temperature around the hose where it is being used) need to be considered when selecting the hose. Make sure that temperature rating of the hose you are considering meets or exceeds the higher of the media or ambient temperature of your application.
Media
The hose you order must be compatible with the medium being conveyed. Compatibility must cover not just the inner tube, but the cover, hose fittings, and o-rings as well. Use the Chemical Resistance Chart to select the correct components of the hose assembly that will be compatible with your system's media. The chart contains the chemical resistance rating of a variety of hose materials with many commonly used fluids and chemicals.
Pressure
It is important to know both the system working pressure and any surge pressures and spikes. Select a hose with the published maximum working pressure equal to or greater than the maximum system pressure AND any surge pressures or peak transient pressures in the system. Pressure ratings for the most common Parker hoses can be found on the Hose Overview Chart.
Process of Hoses
Material Selection and Preparation
The process begins with the selection of raw materials. The primary component, rubber, can be natural or synthetic, depending on the hose's requirements. Additives such as carbon black for reinforcement, plasticisers for flexibility, and antioxidants for durability are carefully chosen and blended to create a rubber compound that meets specific performance criteria.
Extrusion of the Inner Tube
The inner tube is the first layer to be formed. The rubber compound is fed into an extruder, where it is heated and forced through a die that shapes it into a continuous tube. The extrusion process must be closely controlled to ensure consistent wall thickness and diameter.
Reinforcement Layer Application
Once the inner tube is extruded, it's time to add the reinforcement layer. This can be done in various ways, such as braiding, spiraling, or knitting textile fibers or wire around the tube. The reinforcement layer is crucial as it provides the hose with the necessary strength to handle internal pressures and external forces.
Vulcanisation
After the reinforcement layer is applied, the hose assembly goes through vulcanisation, also known as curing. This process involves heating the hose in a press or autoclave, which causes the rubber to undergo a chemical reaction that cross-links the polymer chains, giving the material its final properties of elasticity and strength.
Applying the Outer Cover
The outer cover is then applied over the reinforcement layer. This may involve another extrusion process similar to that of the inner tube, or it could be wrapped around the hose in a spiral fashion. The outer cover is designed to protect the hose from environmental damage, abrasion, and other external factors.
Cooling and Finishing
Once the hose is fully assembled, it is cooled slowly to stabilise its form. The hose may then be cut to length, fitted with connectors, or undergo additional finishing processes such as wrapping or labeling.
Quality Control
Throughout the manufacturing process, quality control is paramount. The hose is subject to various tests to ensure it meets the required specifications. These tests can include burst pressure tests, flexibility assessments, and inspections for imperfections or inconsistencies.
How to Maintain Hoses
Visual inspections are one of the most important—and one of the simplest—steps of preventative maintenance. Regularly inspect the hose system and its fittings for damage, disrepair, or signs of unusual performance problems on a daily, weekly, or monthly basis as appropriate for your application.We recommend compiling a list of signals that trigger a complete shutdown and hose assembly replacement so your employees can quickly mitigate problems.
Each industrial and hydraulic hose—and its fittings—has a known expected lifespan. Each end application is at least somewhat unique and requires consideration as to how long the hose assembly should last. Ask your manufacturer or supplier about that lifespan and the ideal interval for inspections and tune-ups. Tailor the preventative maintenance schedule to the individual components to allow your facility's inspectors to perform efficient, optimal maintenance. At each stage of the lifespan, look for signs of cuts, kinks, corrosion, or deterioration that match the life stage of the part.
Test each hose system by operating it at its maximum rated working pressure and checking it for leaks or problems. During this test, make sure any system surges also are below the maximum permissible pressure and that personnel maintain a safe distance from the equipment in the event of a malfunction.Never inspect a hose by being in direct physical contact with a hose under pressure. Fluid injections can cause severe injury.
Even with good preventative maintenance and optimal system operations, parts of the hose system will break down over time. The elastomeric seals, for example, will start to harden, wear, or turn brittle due to both age and frequent exposure to heat and pressure. Replacing these parts anytime the hose is removed helps keep the system as a whole in good condition and doesn't require unscheduled downtime for troubleshooting and repairs. It prevents failures that could result in injuries or loss of production.
During each step of your facility's preventative maintenance program, keep a running record of the assembly's condition, any parts replaced or repaired, and even that regular inspections occurred without the need for adjustment. All of this data allows your company to monitor the long-term performance of the system and see if the system is performing as expected. Analyzing the data also can help your company determine if it's time for a new design or system.
As opposed to having to turn off the machines and cause delays for known or anticipated repairs because you don't have the parts on hand, maintain an inventory of spare parts. A smart analytics system, combined with your preventative maintenance data, can recommend the right quantities of which components to keep on-site for fast replacement. Along with an in-house inventory, you can order replacements in preparation for scheduled parts replacement tasks and streamline the entire process.
Our Factory
Jining Luoling New Mining Products Co., Ltd. is a state-owned enterprise that produces supporting materials and supporting equipment. The company has now developed into a high-tech enterprise with complete products, excellent quality, large scale and strong production capacity in the same industry.
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FAQ
As one of the leading hoses suppliers in China, we warmly welcome you to buy bulk discount hoses in stock here from our factory. All our products are with high quality and low price. Contact us for free sample.
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