Offers to Sell

Contact :Sandy Lin Email : unity@mvme.cn Mob/Whatsapp : +86 18020776786 Skype: onlywnn_1 Wechat : mooreplc Packing & Delivery 1. lower your support costs 2. Provide on-going availability of automation replacement parts Quantity available:  1 pics Warranty: 1 Year Lead time: 1-2 working days. Type of payment:T/T Courier partners: DHL, UPS, TNT, FedEx and EMS. About us We are a global supplier of quality new, obsolete and refurbished automation parts. We offer the best prices possible with no hidden charges, full 12-month warranty and swift worldwide delivery. So that when you need a part fast, we’re here to help. Product Categories Distributed control system (DCS) Programmable Logic Controller (PLC) remote input / output module (RTU) Industrial PC (IPC) industrial low-frequency screen low-capacity hard drives for industrial use SCSI (50,68,80Pin) AnyBus (Gateway) human-machine interface industrial control related ancillary products Recommend Products BENTLY NEVADA 330930-065-00-CN BENTLY NEVADA 330104-00-14-10-02-00 BENTLY NEVADA 9200-01-02-10-00 BENTLY NEVADA 990-04-50-02-00 BENTLY NEVADA 330180-51-05 BENTLY NEVADA 330180-91-05 BENTLY NEVADA 125680-01 BENTLY NEVADA 133396-01 BENTLY NEVADA 125800-01 EMERSON 1C31223G01 YOKOGAWA ADV551-P00 S2 HIMA F8650X EMERSON KJ2005X1-MQ2 13P0072X082 VE3008 ICS T8310C ICS T8442C EPRO PR6423/004-010 EPRO PR6424/010-010 ABB FAU810 ABB 3BHB006309R0001 UNS0882A-P,V1 ABB 3BHE028959R0101 PP C902 CE101 BENTLY NEVADA 3500/40M 140734-01 BENTLY NEVADA 3500/60 133811-01 BENTLY NEVADA 3500/53 133388-01 BENTLY NEVADA 125680-01 BENTLY NEVADA 133819-01 BENTLY NEVADA 135137-01 BENTLY NEVADA 3500/22M 138607-01 BENTLY NEVADA 330180-51-05 BENTLY NEVADA 330180-91-05 EPRO CON021

Minimum Order: 1 bags

Miguel is from a hydraulic equipment company in Brazil. He began to purchase hydraulic components in China 3 years ago, and it was successful. At the beginning of last year, the hydraulic flow control valves he purchased encountered problem and almost suffered a claim. Since using AAK hydraulic flow control valves to replace, he knows that there are also hydraulic valve manufacturers in China that have benchmarked the quality of German manufacturers. Miguel company sold a hydraulic unit, which was used in wind power generation equipment near the sea. Half a year later, the customer complained that the valve body of the hydraulic flow control valve was seriously corroded and stuck, leading to the strike of the wind turbine generator. According to the factory feedback of the original hydraulic flow control valves, the corrosion of the valve body is caused by the objective marine climate, the hydraulic flow control valves can only be replaced. Miguel realized that replacing it within 6 months was not only expensive for after-sales, but also not necessarily acceptable to the customer. He purchased the hydraulic flow control valves from Germany to replace it. At the same time, he asked some new hydraulic valve manufacturers to make samples and required that the hydraulic flow control valves to be guaranteed for 12 months or more in the corrosive environment near the sea. Most manufacturers gave up, and only two were willing to test samples, including AAK. After 40 days, AAK shipped the trial order of 30 hydraulic flow control valves. There has been no email from Miguel since the trial order was delivered. 15 months later, that is, last week, Miguel suddenly emailed us to purchase 800 hydraulic flow control valves. After communication, we learned that they were very satisfied with AAK hydraulic flow control valve samples delivered 1 year ago. The samples from another factory were corroded in 10 months, while AAK’s were still fine after 15 months. This service life was benchmarked to the hydraulic flow control valves purchased from German manufacturers, but the price of AAK was 30% cheaper, so they directly placed a big order. AAK hydraulic flow control valves can be used in highly corrosive marine environment for 15 months without damage. The key lies in 3 points, which most domestic hydraulic valve manufacturers cannot do: 1. In terms of material, 3Cr3Mo3W2V hot working die steel is selected for the valve body, and its mechanical stress is optimized by at least 50% compared with other steels. After personalized heat treatment, the hardness, strength and corrosion resistance of the material are more than doubled. 2. In terms of surface treatment, zinc nickel alloy coating is adopted, and the corrosion resistance of the valve body is improved again. Its corrosion resistance is more than 10 times higher than that of ordinary zinc plating and nickel plating processes, which can ensure that there is no red rust after neutral salt spray test for more than 1500 hours. 3. In terms of detection, AAK has SH-90 salt spray testing machine, which tests the valve body according to the GB/T2423.17 test standard to ensure that any surface of the valve body meets the salt spray test standard. AAK hydraulic flow control valves are safe to use near the sea, and durable under high pressure and high frequency use. You can also have a small try! https://www.aakindustry.com/info-detai , l/hydraulic-flow-control-valves-aak302

Alex, an old friend from Brazil who has worked with AAK for 5 years, sent me an email last month, asking me to help his new colleague Marvin to make samples for a hydraulic cartridge directional control valve and to work overtime urgently. It was learned that Marvin just joined the industry for half a year. The coaxiality accuracy of the hydraulic cartridge directional control valve purchased by Marvin from the local cartridge valve manufacturer in Brazil was not up to the standard, which led to the customer's complaint about the unstable operation of the hydraulic winch. Their engineer detected that the coaxiality error of the hydraulic cartridge directional control valve was 0.004mm, which caused the pressure in the fitting gap between the valve hole and the valve spool to be unbalanced, it must be replaced, but the original manufacturer gave up. The customer has been pushing for progress. Marvin has no direction, so he asked Alex to help. According to the drawing of the hydraulic cartridge directional control valve sent by Marvin, although it is difficult for the coaxiality error to be less than 0.002mm, our engineers have the means and are willing to work overtime to deal with it. AAK treats regular customers with the green light as much as possible. After 25 days, 12 samples of hydraulic cartridge directional control valves were sent out. Last week, Marvin emailed that AAK hydraulic cartridge directional control valves had been installed on several abnormal hydraulic winches, and the customer was satisfied with his after-sales service. He was asking the boss whether he needed to replace all the hydraulic cartridge directional control valves in this batch of hydraulic winches, and asked me to ensure the stability of the quality. I told him that for this model, AAK quality may not be the best, but the most stable. There would be no cases that the coaxiality error is 0.004mm for one moment, the fitting clearance between valve hole and valve spool is 0.002mm for another moment. There would not be the case that the fitting clearance between valve hole and valve spool, is big or small. AAK hydraulic cartridge directional control valve, stable coaxiality error, and stable sealing of valve body and valve spool, fundamentally ensure the working stability of the hydraulic winch, which mainly comes from 3 aspects: 1. Technically, the machining process of the valve hole of the hydraulic cartridge directional control valve adopts 6 procedures, including drilling, rough boring, semi fine boring, fine boring, reaming and honing. Most cartridge valve manufacturers do not have semi fine boring procedure, and only 5 procedures. 2. On the equipment, the valve hole is processed by the horizontal machining center imported from Japan, which is mainly used for military products processing. At the same time, diamond reamers are equipped for reaming to ensure the surface roughness, cylindricity and roundness error of the valve hole. These precision parameters are controllable and stable. 3. In terms of detection, the improved CMM is used to check, and the coaxiality error is strictly controlled within 0.002mm. AAK hydraulic cartridge directional control valve is reliable, and you can also have a small try! https://www.aakindustry.com/info-detai , l/cartridge-directional-control-valves- aak420

Today, we launched a Hydraulic Pressure Reducing/Relieving Valve E-PRDB, which is equivalent to SUN standard part PRDB, including PRDB-LAN, PRDB-LBN, PRDB- LDN. This Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions. Direct operated version offers superior dynamic response compared to equivalent pilot operated models. This Direct-acting, pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). These valves incorporate a damped construction for stable operation allowing the use of high reduced pressure. AAK E-PRDB hydraulic Pressure Reducing/Relieving Valve 2 Selling Points: 1. Internal leakage: 2 in³/min., benchmarking SUN Hydraulics 2. Service life is 2 times that of domestic peers Technical parameters of AAK E-PRDB Hydraulic Pressure Reducing/Relieving Valve: Max. Operating Pressure: 350 bar (5000 psi) Flow: 10 gpm (40L/min) Internal Leakage: 2 in³/min. Temperature: - 35 to 120 °C (with Standard Buna N seals) Cavity: T-11A  The newly launched AAK E-PRDB Hydraulic Pressure Reducing/Relieving Valve, benchmarking 3 models of SUN PRDB Series. You can also try a small order. AAK HYDRAULIC VALVES (574) 2023-05-01 https://www.aakindustry.com/info , -detail/pressure-reducing-valve-aak574

Achilleus is from Greece. In the second half of last year, a high-pressure hydraulic winch sold by his company for less than 3 months, was unable to rise and fell suddenly during construction, which almost caused a safety accident. The on-site investigation found that an oil pipe in the hydraulic system was broken and leaked oil. After the oil pipe was replaced, the equipment was restored. But 2 months later, similar problems repeated. The customer couldn't stand this series of problems and complained to the boss. The boss was angry and asked the technical team to solve it completely within 1 month. Achilleus also felt the pressure of the boss and contacted several factories to inquire, but there was no result. Achilleus saw AAK on Google and sent an email asking with a try attitude, and attached the hydraulic schematic diagram. After analysis, AAK engineers found that the probable reason was that the oil pipe burst was caused by the energy conflict between the hydraulic counterbalance valves in the system and the flow control of the system. We informed Achilleus of the analysis results the next day and recommended that AAK make the samples directly. We will redesign the hydraulic counterbalance valve according to the energy principle of the hydraulic system. 3 days later, Achilleus placed the sample order for 10 hydraulic counterbalance valves and also paid the development cost. After 45 days, AAK sent the samples. Last week, Achilleus sent an email to express his thanks. After using the hydraulic counterbalance valves redesigned by AAK, the hydraulic winch has been running stably for half a year, and the customer is also very satisfied. The boss praised him, too. Their engineers admire the design ability of AAK and suggest Achilleus to take AAK as the preferred supplier of hydraulic counterbalance valves. AAK unique designed hydraulic counterbalance valves, with triple safety protection, customers no longer worry about the burst of the oil pipeline of the hydraulic system. 1. AAK changed the flow control groove of the hydraulic counterbalance valve, and redesigned small flow control groove. The maximum working pressure can reach 420bar, realizing zero leakage load maintenance. Even if the oil pipeline bursts, the load will not be out of control. 2. The working mode of the hydraulic counterbalance valve designed by AAK is similar to a two position flow controller with compensation, which can realize the curve of different forms of flow decreasing with the increase of load pressure, so that the control tank with small flow can realize the optimization of control. 3. According to the characteristics of this winch hydraulic system, the hydraulic counterbalance valve designed by AAK has different damping combination configurations, so as to ensure the stability of the winch hydraulic system. AAK hydraulic counterbalance valves, unique design, welcome to have a try! https://www.aakindustry.com/info-detai , l/hydraulic-counterbalance-valves-aak301

Yobachi, from Kenya, has not been working for a long time as a purchaser, and encountered difficulties in the hydraulic directional control cartridge valve. After 6 months of use, their hydraulic power unit has unstable operation. During after-sales checking, it was judged that that the main seal of the hydraulic directional control cartridge valve is worn, causing leakage and equipment failure. However, the hydraulic directional control cartridge valve manufacturer said that it had been nearly 1 year since the shipment, and he needed to purchase new ones again. Yobachi explained that taking the time on the delivery, transportation, assembly, equipment commissioning and inventory into account, the actual service life of this batch of hydraulic directional control cartridge valves was only 6 months. The boss was not satisfied that Yobachi had found an unreliable manufacturer. He had to re-purchase the hydraulic directional control cartridge valves with a service life of more than 1 year without leakage. Yobachi was under pressure. Yobachi left a message on our website: 1. I browsed the AAK cartridge valve website on Google. 2. Can AAK hydraulic directional control cartridge valve have zero leakage? And the service life is more than 1 year? 3. What is the time and cost of customizing the hydraulic directional control cartridge valve? This is the first time that AAK received an inquiry from Kenya about hydraulic cartridge valves. I was a little cautious. After communication, it was learned that he had met with an unreliable hydraulic cartridge valve manufacturer, which made him very passive with the boss and customers. According to the system hydraulic schematic diagram and the original drawing of the hydraulic directional control cartridge valve provided by him, after the analysis, AAK engineers found that it is not difficult to make this hydraulic directional control cartridge valve as zero leakage. Yobachi seemed a little unconvinced. I told him that in 2022, AAK customized 67 non-standard hydraulic cartridge valves for customers, and made samples of total 112 models of cartridge valves for new and old customers. Till now, there are no quality complaints. After 7 days, Yobachi requested AAK to make samples. After 40 days, AAK sent 20 samples of hydraulic directional control cartridge valves. 3 weeks later, Yobachi only told us that the equipment installed with AAK hydraulic directional control cartridge valve operated stably, and there was no further news. On the first working day after our CNY holiday, he sent an order for 380 hydraulic directional control cartridge valves. He said that AAK hydraulic directional control cartridge valve has been in use for more than 1 year, without leakage, and the equipment performance is more stable. The boss asked him to purchase in batches. The leakage of the original hydraulic directional control cartridge valve is mainly caused by the wear of the main seal, which leads to the leakage of the pilot hole. The cover plate, valve spool, valve cage, O-ring, guide rod and valve body of the pilot hole are all tricky. It is not difficult to make it zero leakage, AAK improved the original structure of the hydraulic directional control cartridge valve from 3 aspects: 1. The cover plate and valve body are connected by screws, the valve cage is inserted in the valve body, the valve spool is installed in the valve cage, the valve spool is located under the cover plate, and the bottom surface of the valve spool cavity is equipped with a return spring. 2. The inner wall of the valve spool is installed with a sealing ring that can prevent the leakage of the pilot port. The main seal adopts a soft and hard composite seal structure. The O-ring is installed on the valve spool guide cylinder, and the O-ring prevents the oil from flowing back to the tank from the pilot hole. 3. The main seal of the hydraulic directional control cartridge valve adopts a soft and hard composite seal structure to prevent leakage at the pilot hole and the main seal. AAK hydraulic directional control cartridge valve, no leakage, you can also try it! https://www.aakindustry.com/info-de , tail/directional-control-cartridge-valves- aak4 , 91

Titan comes from Türkiye, and does not purchase many hydraulic cartridge pressure control valves from AAK. In February of this year, he had an inquiry for a model of HydraForce hydraulic cartridge pressure control valve PS10-36. Titan felt that the price of AAK was high and chose another hydraulic cartridge valve manufacturer in Ningbo China. Last month, he came to me again for the same model PS10-36 and needed 400 pcs. After communication, it was learned that last time, the delivery of the hydraulic cartridge pressure control valves from the original manufacturer was delayed by 2 weeks, which made him very passive with the customer. The quantity of the hydraulic cartridge pressure control valves has been increased this time, and he is not sure about the delivery time of the original manufacturer. The 400 pcs of hydraulic cartridge pressure control valves benchmarking HydraForce PS10-36 needs to be delivered within 20 days. From material procurement to shipment, there should be no more than 5 hydraulic cartridge valve manufacturers in Ningbo that can complete within 20 days, unless the manufacturer has more than 300 pcs of hydraulic cartridge pressure control valves in stock, but there are not many manufacturers in Ningbo that dare to produce large quantities of inventory. I told Titan that AAK can complete the delivery of 400 pcs of hydraulic pressure control valves PS10-36 in 20 days, because of 2 advantages. Firstly, there is some inventory in the warehouse, and secondly, AAK's unmanned workshop produces this model, which can increase the production efficiency by more than 40% compared to the original manufacturer. Yesterday, the 400 pcs of hydraulic cartridge pressure control valves were delivered to Titan on time. Without comparison, there is no harm. I believe that the uniqueness of AAK this time will stimulate Titan to give AAK more and more inquiries for hydraulic cartridge pressure control valves. For this hydraulic cartridge pressure control valve PS10-36, AAK are equipped with a fully automatic CNC machine tool from Japan Tsugami, along with self- developed fixtures, to achieve an unmanned production process. Its servo drive and multi axis linkage ensure accuracy and avoid human error. Only the program settings need to be in place, but the equipment manual cannot be mechanically copied. Our technicians set the processing parameters according to the engineer's programming, implant the valve cage into the bracket, and after starting the equipment, there is no need for manual labor. The clamping arm automatically clamps the valve cage into the machine tool fixture, and the machine tool starts working. As long as there is a blank part on the bracket, processing will not stop. Most hydraulic cartridge valve manufacturer rely on manual clamping, resulting in slow processing and human error in accuracy. 1. AAK adopts Japanese military industrial CNC machining centers, and I don't know which hydraulic pressure control valve manufacturers in Ningbo have more efficient equipment than this. 2. The quality is equivalent to HydraForce and is stable, and AAK dares to make inventory levels that its peers dare not do. 3. Unmanned production workshop, with an efficiency 40% higher than most hydraulic pressure control valve manufacturers in Ningbo. AAK hydraulic cartridge pressure control valve, with a delivery time of 40% faster, reliable and stable quality, welcome to give it a try! AAK HYDRAULIC CARTRIDGE VALVES (671) 2023-09-14 https://www.aakindustry.com/info , -detail/hydraulic-pressure-control-valves- aak6 , 71

　　The performance and longevity of oil seals are significantly influenced by the surface roughness of the shaft with which they interact. If the shaft surface roughness is too high, exceeding Ra0.9μm, the peaks on the shaft surface will penetrate the oil film and come into contact with the seal lip, resulting in dry friction. This can lead to wear on the lip surface and an increase in oil film thickness beneath the lip, ultimately causing seal failure. 　　Conversely, if the shaft surface roughness is too low, falling below Ra0.12μm, the contact area between the seal lip and the shaft can be absorbed into the recesses on the shaft surface. This can lead to oil being squeezed out from beneath the lip, destroying the oil film and resulting in dry friction that wears down the seal lip. 　　Therefore, maintaining an optimal level of shaft surface roughness is crucial for ensuring effective sealing performance and prolonging the lifespan of oil seals. Generally, a surface roughness of Ra0.2~0.6μm is considered ideal for shafts used in conjunction with oil seals. 　　In addition to surface roughness, other factors such as shaft ovality, eccentricity, and runout also directly impact the sealing performance of oil seals. These factors should be carefully controlled during manufacturing and assembly processes to ensure optimal performance. 　　Understanding and controlling shaft surface roughness is vital for maximizing oil seal performance and longevity. By maintaining an optimal level of roughness and controlling other factors such as ovality, eccentricity, and runout, can significantly enhance the performance and lifespan of their oil seals.

Minimum Order: 100

Magnesia chrome brick is a type of refractory brick. Magnesia chrome brick is made by combining (MgO) and chromium trioxide (Cr2O3) in a high-temperature firing process. The resulting brick is highly resistant to corrosion, thermal shock, and wear. Magnesia Chrome Brick is mainly used in the metallurgical industry, such as the construction of flat-bottom furnace roofs, electric furnace roofs, refining furnaces outside the furnace, and various non-ferrous metal smelting furnaces. The content of chrome can be adjusted according to the customer’s requirement.  Magnesia chrome brick Features Good thermal shock resistance Excellent slag wear resistance Good cold compression strength High temperature resistance and high fire resistance High-grade chrome ore raw materials Lower impurity content

Magnesia Carbon Brick is a resin-bonded brick produced from dead-burned or fused magnesia and graphite, with some metallic powder as anti-oxidants to protect the carbon durability. MgO-C bricks are used extensively in high quality steel alloy making processes especially in basic oxygen furnaces, electric arc furnaces, ladle refining furnances,and is widely popular in the steelmaking industry. Magnesia Carbon Brick is mainly used in the converter lining, which is in direct contact with molten steel and molten slag. Mag Carbon Bricks have been used in the ladle refining slag line and has achieved good results. It is also used in the lining part of AC electric arc furnace, DC electric arc furnace, converter and other components. Mingshi Magnesia Carbon Brick Advantages: Good high temperature resistance: Bbetter insulation performance than magnesium aluminum carbon brick Strong anti-slag penetration resistance Resistance to thermal shock High Corrosion resistance to slag Non-Wettability to molten slag Increases lifespan of the vessal. Proper residual expansion

What is Caustic Calcined Magnesite (CCM) Caustic calcined magnesia (CCM) is a highly reactive form of magnesium oxide produced by calcining crude magnesite, brucite, or magnesium hydroxide extracted from brine at temperatures between 600°C - 1000°C. CCM is mainly used in: Agricultural applications, Hydrometallurgical processes, Pulp and paper, Construction and Sorel cement, Chemicals and pharmaceuticals industry, Environmental applications, Glass industry. Application: Construction: Indust , rial Flooring ·Ceramic tiles, boards & panels ·Abrasives Industrial: Hydrometallurgy ·Pulp & Paper Specialties: ·Glass making ·Friction materials Agri-business: ·Animal Nutrition ·Fertilizers ·Agriculture Enviromental: ·Soil decontamination ·Waste neutralization ·Water treatment ·Flue gas treatment

Fused magnesia (FM) is a type of refractory material that is produced by the electric arc melting of caustic calcined magnesia, deadburned magnesia or raw magnesite in furnaces at temperatures in excess of 2750°C. It has a high melting point, excellent thermal shock resistance, and good chemical stability, making it a popular choice for use in a variety of industrial applications such as steelmaking, cement manufacturing, and glass production.  Fused magnesia (FM) Application: - High performance MgO-C refractory bricks for steel industry, - Fired refractory bricks for cement and glass industry, - Heating elements industry Mingshi Fused Magnesia Production Process: Magnesite (magnesium carbonate MgCO3) is converted into magnesia by the application of heat which drives off carbon dioxide (CO2), thereby converting the carbonate to the oxide of magnesium (MgO). Fused magnesia is a high-purity material used in the production of refractory materials, ceramics, and other industrial applications. The production of fused magnesia involves several steps. Raw Material Preparation: The raw material used in the production of fused magnesia is magnesite, a natural mineral. The magnesite is first crushed into small pieces and then calcined at high temperatures to remove impurities and water. Fusion: The calcined magnesite is then mixed with coke and other additives and fed into an electric arc furnace. The furnace is heated to a temperature of around 3,000 degrees Celsius, causing the magnesite to fuse into a molten state. Cooling and Solidification: The molten magnesia is then cooled and solidified by pouring it into molds or by spraying it with water. This process can take several days or even weeks, depending on the size and shape of the desired product.

85%-92% Dead burned magnesiais mainly made of natural magnesite ore with 46% content, which is calcined by high temperature kiln at about 1400℃-1800℃. Application: Dead burned magnesia is mainly used as raw material for making magnesia bricks and producing amorphous refractory materials. The finished products are used in steel making, electric furnace bottom and ramming furnace. The main varieties of dead burned magnesia have 85%-92% content, these varieties are mainly selected 46.5% to magnesite, sintered kiln calcination heating to 1400-1800 ℃ Mg(CO3) completely decomposed, generating magnesite, become hard reddish-brown dead burned magnesium, it has a high refractorability. Dead burned magnesia is mainly used for magnesia brick, steelmaking, electric furnace bottom and ramming furnace lining. Product Name MgO (%) SiO2 (%) Al2O3 (%) Fe2O3 (%) CaO (%) Loi (%) BD (kg/cm3) Package DBM85 85 MIN 7.0MAX 0.7MAX 0.6MAX 5.0MAX 0.8MAX 3.10MIN TON BAG (1.25) DBM90 90 MIN 4.8MAX 1.0MAX 0.7MAX 4.0MAX 0.6MAX 3.15MIN TON BAG (1.25) DBM92 92 MIN 4.8MAX 1.0MAX 0.7MAX 3.5MAX 0.5MAX 3.15MIN TON BAG (1.25)

The dredging rubber hoses are suitable for dredging sand & slurry. It is normally installed between the HDPE dredging pipes to ensure the whole pipelines more flexible. SINCO Pipe could supply dredging rubber hoses ranging from 100mm inner diameter to 900mm inner diameter with various length and pressure ratings. Dredging Rubber Hose Advantages The dredging rubber hose is suitable for dredging engineering projects .It is consist out of an inner lining which can be adjusted to meet the specific requirement of the transported medium. Wear indicator layers can also be implemented in the lining of the hoses which transport abrasive medium. A proven textile reinforcement of high tensile strength controls the pressure resistance of the hose as well as its tensile strength. Whereas the outer cover is built up utilizing a rubber compound formulated to be highly resistant against weathering, UV light and ozone attack. On special request the outer cover can be built utilizing oil resistant materials. Hose end fittings are available in a wide range of designs specifically produced to match the selected hose service requirements. The dredging rubber hose main features as follows:   1. Dredging rubber hose outer cover with excellent aging resistance and corrosion resistance. 2. Dredging rubber hose inner cover with excellent abrasion resistance and high quality. 3. Wearing colored indicator layer. 4. Bending angle in working condition is from 0-45. 5. Low centre of gravity, strong ability of the anti-wave and good stability.