Offers to Sell

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.

HDPE Dredging Pipe floaters/Floats are made of rotationally molded polyethylene with UV inhibitors to prevent degradation of the floats over time. SINCO HDPE Dredging pipe and floats are perfect solutions for dredging works, dewatering, pumping and other industrial projects. The dredge pipe floats are designed to be supplied with SINCO HDPE dredging pipes floats and flexible rubber hoses, which provide sufficient buoyancy to keep SINCO HDPE dredge pipes floating above the water level. HDPE dredging pipe floaters/floats are usually made in yellow color as a warning sign to other vessels in the vicinity. Other colors can be made upon request. HDPE Dredging Pipe Floaters/floats Features: • HDPE dredging pipe floaters/floats are usually made in yellow color as a warning sign to other vessels in the vicinity. Other colors can be made upon request. • To ensure long-term outdoor use, UV stabilizers must be added during manufacture to ensure good UV stability of the dredge pipe floats. • HDPE dredging pipe floaters/floats consist of two halves, the inner diameter of the pipe float is the same as (or slightly smaller than) the outer diameter of the HDPE dredging pipe so that the dredging pipe float can be firmly fixed to the dredging pipe without sliding. • The two halves of the pipe float connected by bolts/nuts made of galvanized steel (or stainless steel, if required). • The polyethylene used in the manufacturing process is fully recyclable (environmentally friendly), is fully compatible with the marine environment and has a high UV resistance. • HDPE dredging pipe floaters can absorb or reduce the energy generated by ship collisions and protect the dredging pipes they support. Double-reinforced bolts/nuts on each floater ensure a secure connection to the pipe. • SINCO HDPE dredging pipe floaters is the ideal solution and a necessity for modern dredging work projects.

HDPE Dredging Pipe with non-toxic, odorless, good heat and cold resistance. The pipe is made by PE100 high density polyethylene materials. HDPE dredge pipes are widely used for dredging industries, dredger pipelines, sand pumping pipelines, etc. HDPE Dredging pipe is high rigidity and toughness with high mechanical strength. It has ultra-high resistance, abrasion degree is 4-8 times of steel pipes, useful life can reach more than 5 years. It can withstand the impact of wind and waves on the sea, With good performance, high chemical stability, it can withstand various corrosive media (acid, alkali, salt, etc.) within a certain temperature and concentration range. HDPE dredging pips are manufactured and welded from two HDPE flange adapters and two steel flanges where the two pipes can be easily joined together by flanges and covered with floats to keep them afloat. SINCO HDPE Dredging Pipes are usually produce in 12 meters lenghts. The pipe can be provided from OD110mm to OD1400mm. with various wall thickness as per different SDR & designed pressure rating, and custom-made steel backing rings are available. HDPE Dredging Pipe Applications 1. HDPE Dredging Pipe could be used for transferring powder and coal ash in thermal power plant. 2. HDPE dredging pipe is suitable for delivering mine tailings and slurry, metallurgical mines in the mining industry. 3. HDPE dredging pipe can use for delivering pulverized coal and coal-water slurry of coal preparation plant in the coal industry. 4.Delivering mud and corrosive media with slag in the chemical industry. 5. Delivering crude oil and petroleum. 6. HDPE dredging pipe could be used for delivering sand\mud\slurry for dredger in dredging projects or sand suction projects, and also for seawater treatment projects.

HDPE gas pipe is suitable for outdoor gas transportation and distribution and is the preferred system for underground natural gas and liquefied petroleum gas mains. Sinco HDPE gas pipes are made from either PE80 or PE100 raw materials, which are sourced from world-leading suppliers of raw materials. The raw materials used in the production of HDPE gas pipes are carefully selected to ensure the highest quality and consistency. The gas pipeline is one of the most important components of the pipeline network in a city. The gas itself has certain dangers. If there is a leakage, it is easy to cause great harm, so the safety of HDPE gas pipes is very important. The replacement of the pipe network is also a very troublesome project. Excellent HDPE gas pipes have a service life of 2-3 times that of traditional pipes, up to 50 years. They have good properties, low installation costs and strong safety, so HDPE pipes are ideal used for gas transmission. HDPE Gas Pipe Application HDPE gas pipe is suitable for the gas conveying system which operating temperature range from -20℃-40℃and long time working pressure no more than 0.7Mpa. HDPE Gas Pipe Shipment HDPE Gas pipes are usually shipped by containers, pipes could be telescoped to minimize ocean freigth in terms of several sizes. Bulk shipment are also available. Sinco has its own logistics staffs with rich experiences in cargo packing & shipment. We can arrange the most reasonable shipping solutions for you to save shipping cost.

Standard: ISO4427-2-2019, AS/NZS4130-2018, EN12201-2, ASTM F714-13 etc Sizes: DN16-1400mm Length: 5.8meters or 11.8meters for straight Pipes 50 meters or 100meters coiled length(DN16-DN110) Raw Materials: PE80, PE100, PE4710. Color: Black with blue stripes or as per clients requirements Sinco HDPE pipe is a perfect solution for municipal engineering system and urban water supply and drainage system. HDPE water supply pipes are manufactured from high density polyethylene containing only those antioxidants, UV stabilizers and pigments necessary for the manufacture of pipes. HDPE Pipes are intended to be used for water supply including the conveyance of raw water prior to treatment and that of water for general purposes. Sinco Pipe could manufacture complete series of HDPE water supply pipes range from DN16mm-DN1400mm. The pipes are strictly conform to standards like ISO4427- 2-2019, AS/NZS4130-2018, EN12201-2, ASTM F714-13 etc. HDPE Water Supply Pipes Advantages Sinco HDPE pipe are commonly used for water supply applications because of their many advantages. Here are some of the benefits of using HDPE water supply pipes: 1- Non-toxic: no heavy metal additives, would not be covered with dirt or contaminated by bacterium. Sanitary. No Secondary pollution. 2- Corrosion Resistance: unaffected by chemical matters and electron chemical matters which cause corrosion in metals. 3 High flow capacity: smooth interior walls and low abrasion resistance result low flow resistance and high flow capacity. 4-Excellent Flexibility: can be supplied in coil form, fewer fittings required and lower cost in installation. 5-High impact and breakage resistance. 6- Excellent UV resistance. 7- Differential Settlement Resistance: low requirements for foundation treatment. 8- Easy Installation: light weight, easy to transport and handle friendly. PE pipes could be coiled for small diameters to reduce fittings usage. PE pipe may bend and reduce construction difficulty. 9- Long Service Life: PE water pipe can work for more than 50 years under proper use. 10-Use trenchless technology. 11- Various Joint Availability: socket fusion joint, butt fusion joint, electro fusion joint and transition joint. https://www.sincopipe.com/

　　Oil seals also known as rotary shaft seals, are essential components used to prevent the leakage of lubricants and fluids in rotating machinery. They are commonly used in various industries such as automotive, manufacturing, and engineering. The design and structure of oil seals can vary significantly depending on their application. One key distinction lies in the presence or absence of a spring. 　　Functionality 　　Oi , l seals with springs and without springs serve the same fundamental purpose, which is to prevent the leakage of fluids and contaminants. However, the inclusion of a spring in oil seals provides additional benefits. The spring serves as a radial load component, ensuring a constant pressure on the sealing lip against the shaft, thereby enhancing the sealing efficiency. On the other hand, oil seals without springs rely solely on the interference fit between the seal and the shaft to maintain the sealing integrity. 　　Sealing Efficiency 　　The presence of a spring in oil seals significantly improves their sealing efficiency. The spring helps to compensate for any wear or misalignment that may occur between the shaft and the seal over time. It ensures a continuous radial force against the shaft, maintaining a tight seal and preventing fluid leakage. In contrast, oil seals without springs may experience reduced sealing efficiency due to wear or misalignment, leading to potential leaks. 　　Installation and Assembly 　　Oil seals with springs are relatively easier to install and assemble compared to their counterparts without springs. The spring provides a self- adjusting feature, allowing for easier alignment and positioning during installation. The spring also helps to maintain a constant pressure on the sealing lip, ensuring a secure fit. Conversely, oil seals without springs require more precise alignment and careful installation to achieve an effective seal. 　　Applications 　　O , il seals with springs are commonly used in applications where there is a high degree of shaft misalignment or vibration. The spring compensates for any shaft movement, ensuring a constant radial force on the sealing lip. This makes them suitable for use in heavy machinery, automotive engines, and industrial equipment. Oil seals without springs, on the other hand, are used in applications where shaft misalignment and vibration are minimal, such as pumps, compressors, and light-duty machinery. 　　Longevity and Durability 　　Oil seals with springs generally have a longer lifespan and higher durability compared to those without springs. The spring helps to distribute the load evenly on the sealing lip, reducing wear and tear. It also provides additional support and stability to the seal, preventing deformation or damage. Oil seals without springs may experience faster wear and reduced durability, especially in applications with higher shaft misalignment or vibration. 　　Oil seals with springs offer improved sealing efficiency, easier installation, and better performance in applications with shaft misalignment or vibration. On the other hand, oil seals without springs are suitable for applications with minimal misalignment and vibration. Careful consideration of the specific application requirements is essential in selecting the appropriate oil seal type.

Minimum Order: 100