Smooth Surface 10000 Psi 3/8" Hydraulic Jack Hose For ...
Smooth Surface Psi 3/8" Hydraulic Jack Hose For ...
Product Description
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Paishun Advantages
* Various colors.
* Free hose sample available.
* Words and your logo can be printed. OEM accepted.
* Strict quality control. Test the products before shipping out with the complete line of test machines.
* Customized hose accepted.
* Factory sale with lower prices.
* Solid construction
* Good service lifetime
* Increased working pressure
* Very flexible and light
Product Detail
Name Jack Hose Size 3/8" Reinforcement 2 steel wire braid. Temperature Range -40ºC ~ +100ºC (-40ºF~ +212 ºF) Application Lifting Jacks Certification CE ans ISO approved Printing Word We can print LOGO or as your requirement. Packaging Detail By poly stripes or as your request. Delivery About 28 days for a 20' container.
Product Specification
Picture
Photo of Factory
With 14 brand new automatic inner hose knitting machines from Italy. The knitting speed is faster,
production capacity has been greatly improved, quality is better and more stable.
More of Paishun
Paishun factory covers a land of over 3 hectares, and the workshops occupy a surface of square
meters. We own complete production lines of the rubber mixing process, cold feeding material extrusion
process, microwave vulcanization process, and high-speed braiding process, etc.
We produce mainly industrial hoses like Air Hose, Water Hose, Oil Hose, Welding Hose, Hydraulic Hose,
and Assemblies. Paishun, being a rapidly growing enterprise focusing on the professional production of
pure rubber hoses and braided rubber hoses, its yearly production capacity reaches 10 million meters.
Our key policy is "enterprise may thrive with the technology, and may last with good quality". So we put
much investment in the research team, and in advanced testing laboratory equipment. We now use a
series of tensile testing machines, vulcanization testing devices, aging testing chest, pressure testing
machines to ensure effective quality control. All these testing machines and related procedures may
form a complete quality control system, beginning from the selection of the raw materials until the end
step. Thus, we wish our products can satisfy all of our customers, and help them to gain more and
more market share.
RELATIONSHIPS
Long term business relationships are of upmost importance to us at Paishun. With our roots planted
as a manufacturer, we take the time to learn about your business and your individual needs so we
can provide better service to you. We pride ourselves on maintaining long term business relationships
and understand that it takes time to build trust in new ones.
QUALITY
Paishun is ISO : certified for the manufacturing of rubber hoses. This certification encompassed
with lean manufacturing allows us to ensure our products are safe, reliable and of superior quality.
Our workshop upholds strict cleanliness guidelines at all times. We maintain a clean and organized
environment. This allows us to guarantee your hoses are produced promptly and efficiently.
SHORT LEAD TIMES
We have continually made improvements to our manufacturing process over 12+ years. We've implemented
lean manufacturing and moved to a larger workshop. These changes have enabled us to support growth
and streamlined our supply chain process in order to respond quickly to market change. All with the goal to
decrease lead time and improve quality.
INVENTORY MANAGEMENT
A consistent unbroken supply chain allows us to produce rubber hoses at a steady pace. We understand
how important production scheduling and inventory flow are to your business. We will work with you on
an individual basis and will process blanket orders to assist with your inventory level. All of our materials
are sourced from big group company such as China Petro and Sinopec, to adhere to our best quality
standard.
How to select high quality hydraulic hose - 4 ways ...
The quality of the hydraulic rubber hose is directly related to the safety of the use. So it is very important that how to determine whether the quality of the high-pressure pipe hose is qualified.
High-pressure rubber hose usually consists of four layers: outer rubber layer, steel wire reinforcement layer, middle rubber layer, and inner rubber layer.
1. The inner rubber layer directly touches the hydraulic oil, usually made of synthetic rubber.
Are you interested in learning more about china smooth surface hydraulic hose? Contact us today to secure an expert consultation!
2. The bearing capacity of the flexible hose depends on the reinforcement layer. This layer is the skeleton of the hose pipe, which is usually woven or wound with steel wire.
3. Most medium and high pressure use steel wire woven body as the skeleton, and high pressure and super high pressure mostly use the steel wire to surround the skeleton.
4. The outer rubber layer is usually made of abrasion-resistant and corrosion-resistant rubber to ensure that the reinforcement layer is not subject to mechanical damage, chemical corrosion, wet rust. Used for oil return pipeline.
The inner and outer layers of the high-pressure hose wall are oil-resistant rubber, and the center is (2 to 4 layers) interspersed with steel wire or surrounding steel wire.
Poor quality hydraulic hose pipe will show:
1, the thickness of the braided hose wall is uneven; the steel wire is too tight, too loose, or the number of steel wire layers is too less;
2. The amount of deformation (elongation, shortening or bending deformation) of the pressure hose after adding pressure is large;
3. Poor air-tightness of the outer layer of rubber causes corrosion of the steel wire; poor sealing of the inner layer of rubber allows high-pressure oil to easily enter the steel wire layer; lack of adhesion between the rubber layer and the steel wire layer.
The above conditions will reduce the bearing capacity of the hose hydraulic, and as a result, the pipe will burst at the place of the thin wall, so you need to pay special attention during installation.
The following methods will help you identify the quality of high-pressure hydraulic hoses:
First: Observed
1. The appearance quality of the hydraulic hose:
The appearance quality of the hose flexible can not be ignored. It not only affects the appearance quality of the rubber hose pipe assembly and will affect the quality of use. If the outer rubber layer has air bubbles, pores or mechanical damage, the reinforcement layer is exposed, causing corrosion of the skeleton layer, reducing the compressive strength of the rubber hose hydraulic, directly affecting the crimp hose service life, and even accidents during use.
Therefore, attention should be paid to the appearance quality of the hose and appearance defects that affect the performance of the hose assembly should be eliminated.
The surface of the rubber hose is generally divided into two types: smooth surface and cloth pattern: smooth surface requires smooth, no air bubbles and alignment, etc., or there is an Uneven bump; There are gaps and the winding is not tight.
2. Look at the steel wire layer:
Quantity: Rubber hoses are generally divided into three layers, namely the inner rubber layer, the reinforcement layer, and the outer rubber layer. The reinforcement layer belongs to the middle layer. This layer generally adopts fiber, steel wire weaving or winding. The more layers, the more the strength coefficient (also related to the material and thickness of the reinforcement layer).
Also observe if the wire layer placement is whether uniform.
3. See if the rubber hose has eccentricity:
The rubber tube core is perfectly round under normal conditions. Under eccentric conditions, it may affect the use.
4. Look at the Curvature of the rubber hose:
After the hydralic hose is folded in half, look at the color change and rebound speed of the surface of the rubber hose. The color change is small and the rubber hose with fast rebound speed is generally of better quality.
5. Deviation of high-pressure flexible hose wall thickness.
Due to The influence of the overlap width of the middle rubber layer of the skeleton layer, May cause excessive hose wall thickness deviation. If the wall thickness deviation exceeds the allowable range, it will affect the subsequent sealing and pull-out strength, and even cause the hose assembly fittings to deviate (crooked head). Therefore, the deviation of the wall thickness of the hydrolic hose should be strictly controlled. Generally, If the wall thickness deviation exceeds 0.5mm, it should be chosen carefully.
6. Adhesion between the layers of the hidraulic hose.
High-quality rubber hoses should have good integrity, that is, there should be high adhesion between the structural layers, and the bonding between the rubber layers becomes a whole. In this way, it can meet the various process requirements in the process of fittings assembly and crimping, and can ensure the performance requirements of the hose assembly. Therefore, the adhesion between the various layers of the hose must be controlled not less than the technical standards, and every effort should be made to select a hose with high adhesion for the production of the hydraulic hose assembly.
7. See whether the inner wall of the rubber tube is lubricating, smooth. Use your fingers to poke. Is the inner rubber elastic? Good elasticity means high rubber content.
8. Dip in diesel and let it sit for a day. The next day, take it out to see if the inner rubber of the high-pressure hose has swelled, if the expansion coefficient is large, indicating that the rubber quality is not good.
Second: Measure
Measure hidraulic hose diameter and wall thickness: Good quality rubber hose has a uniform wall thickness, and spiral hose diameter is equal everywhere.
There is an actual deviation between the size in use and the size in production so that the inner diameter and outer diameter will fluctuate during normal work. If the fluctuation range exceeds the allowable range, there is no way to ensure the hose fitting crimping pressure uniform, it difficult to guarantee the quality of the hose assembly. Therefore, for the hoses used in assembly production, it is necessary to strictly check whether the inner diameter and outer diameter and the skeleton layer meet the requirements. For the outer diameter deviation, the requirements can be appropriately relaxed.
Hydraulic rubber pipe hose inner diameter measurement: Wire-reinforced hydraulic hose should be measured at least 25mm away from the end of the hose.
Measurement methods:
1. Measurement of rubber hoses with a nominal inner diameter of less than 150mm can be performed with plug gauges with a Increments of 0.25mm. Insert the plug gauge slowly into the excavator hose sample without applying pressure. When the lumen of the hose is not exactly round, it should be measured more carefully.
2. For hoses with a nominal inner diameter of less than 63mm, which require high accuracy, such as steel wire-reinforced hydraulic hoses, an Expansion ball style or telescopic inner diameter gauge should be used for measurement.
3. For measuring excavator hose with a nominal inner diameter of 100mm and below, it can be measured using the inner claw of a sliding vernier caliper that meets the requirements of GB.2. Take two measurements at right angles to each other and take the average as the inside diameter. Take care not to deform the hose during the measurement. When measuring hoses with a nominal inner diameter of 100mm or more, if the accuracy of the measurement result is required to be higher than that, you can use a suitable caliper to measure
4. For measuring all inner diameter hoses, the caliper specifications should be suitable for the inner diameter being measured. Two measurements should be taken at right angles to each other and the average value should be taken as the inner diameter.
Hose outer diameter measurement: Generally measured at both ends, because the size here directly affects the use of the assembly.
When measuring the outer diameter of the braided hose pipe with a caliper, you can use the full length of the claw to contact the outer circle of the hose in parallel. In this way, you can measure a long range outer circle at a time, and grasp the feel to obtain the reading based on the principle of "minimum contact force".
1. Measuring the outer diameter of the hose with an outer diameter measuring cylinder:
The measured outer diameter of the hose is generally below 50: When measuring, you only need to gently insert the hpipe rubber hose into an outer diameter measuring cylinder, with the "minimum contact force". The maximum and minimum size of the hose can be determined at one time Qualified. Fast and accurate; especially practical for some hoses that require 100% inspection of the outside diameter; if the hydraulic rubber hose flexible is out of roundness, it can also be rotated or lightly squeezed to eliminate the impact.
2. Outside diameter go-stop gauge measure the outer diameter of larger hoses: When measuring, insert the outside diameter go-stop gauges gently into the outer circle of the flexi hose with "minimum contact force", and you can determine at one time whether the maximum and minimum dimensions of the reinforcement hose Qualified, fast and accurate: If the hose is much out of round, you should make a comprehensive judgment in 2-3 directions, or immediately measure after the outer circle of the hose is properly rounded by hand: H1 should be larger than the manufacture hose diameter 3-5 mm , H2 should be equal to or greater than 2/3 of the high pressure rubber hose diameter.
Third: smell
Smell the hose body, to check if with or without odor: the rubber hose material with less odor has better quality.
With the development of the rubber industry, various kinds of recycled materials such as factory scraps and experimental slag are increasingly used. If the rubber tube you buy has a large odor, it is very It may be the recycled material used. Recycled materials not only cause great irritating taste. If these recycled materials are used in large proportions, due to the fear of scorch during vulcanization, low temperatures or shortening the vulcanization time often lead to undersulfurization, which will not only affect the vulcanization effect, but also the quality of hydraulic hoses.
Fourth: test
Pressure test, Impulse test, etc.
Verification pressure test:
When using a verification pressure test to check if the hose assembly leaks, the applied pressure is twice the working pressure and the hold time is 3 minutes. During this period, the test piece should be inspected for signs of material, processing uneven leaks, cracks, and other signs of damage to the product. This test is used as a mandatory inspection item for TOPA factory inspection. Note: The high pressure hose rubber must not be bent during the experiment.
Pressure bear deformation test: Hold for 1 minute at the specified pressure (working pressure, verification pressure or other pressure lower than verification pressure), measure the length and outer diameter change of the hose high pressure, and the twist angle and bending
Burst pressure test: Determine the pressure of the hydraulic hose high pressure when it bursts at the specified boosting speed
Leak test: Store under static pressure of 70% of the minimum burst pressure for 5 minutes and repeat it once to check for leaks or damage. Because the test often uses water, and the viscosity of the actual liquid is different, the burst pressure and leakage pressure measured at room temperature may be slightly lower.
Bending test:
After bending the tube hose to a certain degree, measure the ratio of the minimum outer diameter of the bent part to the outer diameter before bending, the steel ball passing capacity and the bending force when the tube is pressurized.
Pulse test:
The design of the rubber tube itself is used for gas or liquid transportation. This determines that the rubber tube must withstand a certain pressure strength. The rubber tube pulse test can simulate the use environment of the rubber tube, such as pressure, temperature, humidity, flow rate, corrosion, etc. From the data obtained, the rubber tube quality and fatigue life can be deduced. Troubleshoot related security risks.
It is required that after the specified total number of pulses is completed, the rubber flex hoses cannot fail so that it can be regarded as a pass.
The rubber flexible rubber hoses pulse test can be performed intermittently as long as the number of continuous pulses can be determined. Of course, this is a destructive test. After testing, the rubber hoses braided will be discarded.
The quality of the hydraulic hose directly determines the safety of the consumer. Therefore, we must choose qualified products to prevent fake and shoddy products, avoid bringing hidden safety hazards to the user.
The stable quality of hydraulic hose is the first requirement for TOPA hydraulic hose manufacturer workshop production. By managing the process parameters and operating methods of the hydraulic hose production process to achieve the purpose of stabilizing the quality of the hose product. It is professional to ensure the quality of hydraulic hoses during production. In article'Hydraulic hose assembly failure analysis', we will show you what leads to hose assembly failure.
Do you have other questions about choosing high quality hydraulic hose? Feel free to contact TOPA rubber hose manufacturer.
Contact Mrs. Mary Guo
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Skype: mary_
For more information, please visit germany standard hydraulic hose pricelist.