Series pf plate-press oil purifier is mainly used to purify transformer oil, turbine oil, engine oil, diesel oil, aviation hydraulic oil etc. It can remove water and particles from oil, if adopting stainless steel body, the machine can be as the vegetable oil purifier. The machine is mainly composed of filtering bed, oil pump and primary-filtering components. It uses filter paper as filter medium, different filtration precisions choosing different filter paper. Series pf is high filtration precision, simple structure, easy operation, low operation cost. Our products list as following: Zy-high effective vacuum transformer oil purifier, oil filtration Zyd-double stages insulating oil purifier, oil treatment, oil purification Zym-mobile/trailer type transformer oil treatment, oil filtration mnachine Ty-turbine oil purifier, oil treatment Tj-coalescence and separating oil filter, oil purifier machine Tya-lubricating oil purifier/hydraulic oil purification Tyj- phosphate ester fire-resistant oil purifier, oil filtration machine Jzs-engine oil regeneration system, waste oil recycling Bz-trasnformer oil regeneration device, oil pruifier Pf-plate pressure oul filter, oil purifier machine Jl-portable oil piurifier, oil filtering, oil filter Iij-ii-bdv oil tester, insulating oil dielectric strength tester Nkee-oil moisture sensor, water content tester
Sino-nsh lubrication oil purifier plant Sino-nsh lubrication oil purifier plant lv series oil purifier are suitable especially for purifying and restoring hydraulic oil, machine oil, coolant oil and various other lubrication oil. The most breakdown of machinery which has lubrication oil system results from contaminated lubrication in which has water, gas, impurities etc. Lv series can rapidly remove water, gas, particulate matters and impurities from lubrication oil and improve properties of lubricating oil so as to greatly extend lifetime of machinery which has lubrication system. We offer kinds of waste oil regeneration equipment such as transfomer oil recycling system, lubricating oil purification plant, turbine oil filtration plant, fuel oil purifier, engine oil reclamation and so on. Sino-nsh transformer oil purifier plant Sino-nsh lubricating oil purification plant Sino-nsh turbine oil recycling plant Sino-nsh engine oil regeneration system
Vfd(oil purifier, oil purification, oil filtration, oil filter, oil treatment, oil recycling, oil regeneration, oil filtering) series is mainly used to improve the properties of insulation oil. It can remove trace water, gas, particulate matters etc. From the insulating oil effectively and rapidly so as to boost performance of transformers, circuit breakers, mutual inductors, cable and capacitors which has insulation system. Vfd(oil reclaim plant, oil recovery, waste managment, oil disposal, oil reclamation, oil restoration, oil reconstituted, oil restituting, oil recuperation, oil resuming, oil recuperation, oil extraction, oil separation, oil dehydration, oil reconditioned, oil reprocessing) series specialize in purifying branded oil, insulating oil of high voltage and super high voltage transformer. Additionally, it is suitable for treating low viscosity lubrication oil.
Sino-nsh vacuum insulation oil purifier plant Sino-nsh vacuum insulation oil purifier(oil purification, oil filtration, oil filter, oil treatment, oil recycling, oil regeneration) plant is mainly used to improve the properties of insulation oil. It can remove trace water, gas, particulate matters etc. From the insulating oil effectively and rapidly so as to boost performance of transformers, circuit breakers, mutual inductors, cable and capacitors which has insulation system. Vfd series specialize in purifying branded oil, insulating oil of high voltage and super high voltage transformer. Additionally, it is suitable for treating low viscosity lubrication oil. Wooden case
Sino-nsh turbine oil purifier plant Sino-nsh turbine oil purifier(oil purification, oil filtration, oil filter, oil treatment, oil recycling, oil regeneration) plant is particularly suitable for purifying turbine lubricating oil. It also applys to treat hydraulic, coolant oil and other lubrication in which contain large of water, vapor, impurities, sludge, dielectric and colloid. It can eliminate them effectively and efficiently. Tf series will result in the improvement of the properties of turbine oil, other lubrication and extend the maintenance period of turbine or other equipment which has lubrication system and keep them operate in good condition. Wooden case
Light Diesel Gasoline Oil Purifier for Series TYB Gasoline Diesel Oil Purifier Light Diesel Gasoline Oil Purifier for Series TYB Application: It is for treating the diesel oil,fuel oil,gasoline oil for the generators. This machine integrates fine filter, high efficiency demulsification and dehydration into one body. This machine, which can remove large amount of water without heating, even 50% water, creates the fastest dehydration speed, It can quickly separate water from the oil, which even contains half water, to attain cleanness of NAS 6 grade, Convenient using with the go-cart model designed. In a word, it is be used for fast removal of water and sediment in fuel oil or light oil which contains large amount of water. It can not only remove the impurities, water, and acid matters, organic and inorganic acid effectively, but also can remove guargum,surf, colloid and other sludge can be removed together. Feature: 1 TYB series purifier adopt special oil water separator which requires no heating, offering 20 times higher water removing efficiently than over other types of purifiers. 2 As no heating is needed, the additives in the oil are well prevented from degradation or deterioration. 3 Easy-to-operate, water can be discharged online automatically without the presence of operators. 4 Low operation cost, 20%-40% lower than vacuum purifier, centrifugal purifier and filter press. Technical Parameters: Parameters Unit TYB-10 TYB-20 TYB-30 TYB-50 TYB- 80 TYB- 150 TYB-200 TYB-300 Flow rate L/min 10 20 30 50 80 150 200 300 Working pressure Mpa 0.3 Working noise Db(A) 65-75 Running hours without malfunction H 4000 Continuous running hours H 150 Water content ppm 3 Particle Size um 0.5 Cleanliness NAS 6 Power KW 0.75 0.75 0.75 2.2 2.2 3 3.5 3.8 Size mm 700*570*1200 700*600*1200 800*600*1200 850*650*1200 900*680*1200 1100*750*1200 1300*750*1200 1400*800*1200 Weight Kg 80 90 105 135 150 185 200 230 Our company export all kinds of Oil Purifier Machine we have a whole set of quality Oil Filtration system. If you have interested in our Oil Treatment Plant such as Oil Purification Machine, Vacuum Dielectric Oil Filtration Plant, Hydraulic Oil Filtration Plant, ect. Please feel free to contact us.
Portable Oil Filtering and Flushing Machine for Series JL Portable Oil Filter Machine Portable Oil Filtering and Flushing Machine for Series JL Application Series JL portable oil filtering machine can do precision filtering, remove the tiny or big sized impurity, particleï¼?sediments,and sludes from waste oils. Such asl lubricant oil, hydraulic oil,turbine oil,gear oil,and industrial oils etc. It can also as a pre-filter for all oil treatment equipments Series JL Oil Flushing machine is composed of high pressure pump, oil storage tank and precise filtering, this machine is an ideal machine for cleaning the dirty oil pipes of those hydraulic equipments,Gear ,turbine equipments as well as collecting and purifying the waste oil come back from the pipes. It can efficaciously remove impurities including sludge and carbon matters from oil, so as to recover the oil nature and make the machine work normally and effectively, for maintaining the hydraulic equipment from blocking and corrupting by impurities. It will greatly prolong the oil and equipments service life. Feature 1.Using high-quality filter, pollutant carrying capacity, corrosion resistance, high temperature resistance, high mechanical strength, high precision filtering 2.The oil can get to the new oil standard after filtering the mechanical impurities in it 3.Provide the best performance and the most compact design 4.High efficiency, low noise, long life
Vacuum Hydraulic Oil Filtration Machine for Series TYH Hydraulic Oil Filtration Plant Vacuum Hydraulic Oil Filtration Machine for Series TYH TYH Series Hydraulic Oil Filtration Machine is specially used in the treatment and regeneration of fire-resistant hydraulic oil in the big and medium-sized thermo electric generator speed-governing system. It can remove free water, emulsified water ,suspended solids and dirt from hydraulic oil. Hydraulic lubricating oil treated by this machine contains so low emulsification value, few water content and impurities that it can be used repeatedly in the highly precise hydraulic lubricating equipment Enhances the oil quality, restores the lubricating oil viscosity, augments the flash point and improves the operational performance. Guaranteed the hydraulic system and the dynamic system, the lubrication system normal operation, so the machine is suit for many lines, such as the mine, metallurgy, electric power, transportation, manufactures and so on. Features: 1.Strong capability of breaking emulsification, make the turbid and emulsified hydraulic oil become limpid and clear. 2.The combination of coalescing-separation filter elements and vacuum dehydrator. 3.Strong ability to filter the impurity, which can filter the particles completely. 4.It has the back flush system, which can clear impurities automatically. 5.Advanced dielectric condensation device 6.This machine installs the new pressure protector, which can control the temperature automatically; 7.We adopt the high quality filter materials, which has a good function in anti-corrosive, thermostable, mechanical strength. Especially, the precision of eliminates impurity is high and the service life is long. Also, it has a large volume for storing the impurities. 8. The unique degas and dehydrator system: Using the Stereo-Evaporation technical, which can separate the water and gas from the oil quickly by the Multi-level water-oil separation technology. Technical specs( It will be changed as customer's requirements) Item Unit TYH-10 TYH-20 TYH-30 TYH-50 TYH-100 TYH-150 TYH-200 TYH-300 Flow Rate L/min 10 20 30 50 100 150 200 300 Vacuum Degree MPa -0.06 -0.095 Working Pressure MPa 0.4 Temperature 0 100 Power Supply 3phrase,50Hz, 380V(or as needed) Working Noise dB(A) 75 75 75 78 78 78 80 82 Heating power kW 36 40 45 72 80 90 120 135 Total power KW 38 42 47 75 87 101 135 147 Inlet/outlet caliber mm 25 25 25 32 42 50 50 60 Weight Kg 450 550 600 750 850 1000 1200 1500 Dimension Length mm 1500 1500 1500 1600 1750 1900 1900 2100 Width mm 1000 1050 1050 1150 1250 1600 1700 1700 Height mm 1200 1600 1600 1700 1800 1950 2000 2100 Parameter After Purification
Transformer Oil Dielectric Strength Tester Transformer Oil Tester HJT Transformer oil tester conforms to international standard IEC-156, can be used for power frequency dielectric break down test on the transformer oil, capacitor oil, electric device, insulation tool, electric manufacturer and etc. It??s widely used in the fields of power system, petroleum, chemical industry, railway station, power station, electric manufacturer and etc. Features: 1.Self detecting function. The regulator could return to zero start automatically. 2.Controlled by micro computer, easy to operate. 3.Build-in printer. 4.Automatic magnetic bar stir, to eliminate uneven and bubble of oil. 5.100 test data storage, can display the ambient temperature and humidity. 6.Over voltage, over current, limitation protection functions, to ensure the safety of operators. 6.RS232 interface. Specification: Power supply: AC 220V ±10%, 50 Hz ±5% Test voltage: : AC 0 80KV 0-100kV at option Limitation current: 5mA Test precision: 1% Voltage boosting rate: 0.5-5KV/s (adjustable) Presetting: 1-9 times Stirring time: 0-1 minute 9 seconds Static time: 0-10 minutes 39 seconds Environmental temperature: 0-35 Relative humidity: 75%RH Power: 300VA Electrodes Gap Size: 2.5mm Our company export all kinds of Oil Purifier Machinewe have a whole set of quality Oil Filtration system. If you have interested in our Oil Treatment Plant such as Oil Purification Machine, Vacuum Dielectric Oil Filtration Plant, Hydraulic Oil Filtration Plant, ect. Please feel free to contact us.
Oil Trace moisture titrator Tester/ Analyzer for Series HST Oil Moisture Tester Oil Trace moisture titrator Tester for Series HST Overview Karl Fischer Coulomb titration is the most reliable method to detect trace moisture for different substances, which was utilized successfully by HOPU trace moisture titrator. Whats important, this instrument is able to work more reliably and conveniently by using the most advanced control circuit and 32 bit embedded microcontroller processor as the master control core and utilizing embedded mini operating system. Character with fast analyzing speed, simple operation, high precision and strong automatism, the trace moisture titrator has been widely used in the industry of petroleum, chemical, power, railway, pesticide, medicine and environmental protection. Instrument features Utilizing 32 bit embedded microcontroller processor as the master control core and embedded mini operating system. Be stable and reliable because of constant pressure detection, high precision and rapid measuring speed. Simple operation and convenient digital calculation due to color touch screen and full digital keyboard. Four calculation formulas are included, which can meet the different requirement of customer. Miniature thermal printer with time record make searching more convenient. New profile is designed according to the ergonomics. Creative and optimal operating software will bring a different touch experience for you. . Technical parameters Titration methodCoulometric titrationCoulomb analysis DisplayColor LCD touch screen Electrolytic current control0400mA automatic control Measurement scope0ug200mg Sensitive valve0.1µg H2O Accuracy10µg1000µg±3µg More than 1mg but not greater than 0.3% PrinterMiniature thermal printer Power supply220V±10%50Hz Power 40W Ambient temperature540 Ambient humidity 85% Our company export all kinds of Oil Purifier Machinewe have a whole set of quality Oil Filtration system. If you have interested in our Oil Treatment Plant such as Oil Purification Machine, Vacuum Dielectric Oil Filtration Plant, Hydraulic Oil Filtration Plant, ect. Please feel free to contact us.
Vacuum Insulation Oil Filtration Machine for Series ZY Vacuum Insulation Oil Purifier Vacuum Insulation Oil Filtration Machine for Series ZY Application This purifier is applied to treat various of unqualified or used insulation oils including aging transformer oil, mutual inductor oil, switch oil,cable oil. This type of Insulation Oil Filtration Machine can degas, dewater by low vacuum distillation,removing the impurities of insulating oil quickly and effectively. It improves the value of voltage value, oil dielectric strength, extends oil service life and make sure electrical equipment work safely. The power station and mine mainly use the machine to deal with transformer oil,mutual inductor oil, switch oil and cable oil. Features: 1.This machine is small, hi-efficient conveniently. And it can live operated with electrical, vacuum oiling the power equipment and dry moisture of power equipment. 2.Distinctive removing the impurities technology filtering through double FH trapezoidal network and absorbing by high polymer without the mechanical power.3. This machine adopts a high effective vacuum and the internationally advanced stereo-evaporation technology 4.The oil of any grades can be treated on line at the working site 5.This machine can work independently; also it can work with the oil regeneration system. Technical Parameter Parameters Unit ZY-10 ZY-20 ZY-30 ZY-50 ZY-70 ZY-150 ZY-200 ZY-300 Flow rate L/h 600 1200 1800 3000 4200 9000 12000 60000 Working vacuum MPa -0.06 -0.095 Working pressure MPa 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 Breakdown voltage KV 55 55 55 60 60 60 60 65 Moisture PPM 5 Gas content % 0.1 Impurity content 5 Temperature range 10 80 Power supply 50HZ380V(or as needed) Working noise dBA 61 63 70 70 75 70 70 70 Heating power KW 11 13 15 30 48 52.5 57.5 60 Total power KW 12.5 14.5 16.5 33.5 51.5 57.5 65.5 68 Inlet/outlet caliber mm 25 25 25 32 40 50 50 60
Vacuum Lubricant Oil Filtration Machine for Series TYA Vacuum Lubricant Oil Purifier Vacuum Lubricant Oil Filtration Machine for Series TYA TYA series Vacuum Lubricant Oil Filtration Machine is applied to recover and purify various high-precision lubricating oil,hydraulic oil, compressor oilgear oil, heat treatment oil,cutting fluids,quench oil and various industrial oils etc It can remove free water,dissolved water, free gas, acid, emulsification, and eliminate impurity, big and small particulates,dust, and foam in the waste oil. It can also eliminate metallic impurity,colloid,slude and the volatile matter (for example ethyl alcohol, gasoline, ammonia and so on). It enhances the oil quality, restores the oil viscosity, augments the flash point and improves the operational performance. Guaranteed the hydraulic system and the dynamic system, the lubrication system normal operation, so the machine is suitable for many lines, such as the mine, metallurgy, electric power, transportation,drilling and so on. Features 1. Strong capability of breaking emulsification. 2. The combination of coalescing separation and vacuum dewatering. 3.The unique degas and dewater system: Using the Stereo-Evaporation technical, which can separate the water and gas from the oil quickly by the Multi-level water-oil separation technology. 4. Advanced dielectric condensation device 5. With H.P.M high polymeric absorbing material 6.Strong ability to filter the impurity,strong capability of breaking emulsification. We adopt the high quality filter materials, which has a good function in anti-corrosive, thermos table, mechanical strength. Especially, the precision of eliminates impurity is high and the service life is long. Also, it has a large volume for storing the impurities. Technical specs( It will be changed as customer's requirements) Item Unit TYA-10 TYA-20 TYA-30 TYA-50 TYA-100 TYA-150 TYA-200 TYA-300 Flow Rate L/min 10 20 30 50 100 150 200 300 Vacuum Degree MPa -0.06 ï½? -0.095 Working Pressure MPa â?¤0.4 Temperature â?? 0 ï½? 100 Power Supply 3phrase,50Hz, 380V(or as needed) Working Noise dB(A) â?¤75 â?¤75 â?¤75 â?¤78 â?¤78 â?¤78 â?¤80 â?¤82 Heating power kW 36 40 45 72 80 90 120 135 Total power KW 38 42 47 75 87 101 135 147 Inlet/outlet caliber mm 25 25 25 32 42 50 50 60 Weight Kg 450 550 600 750 850 1000 1200 1500 Dimension Length mm 1500 1500 1500 1600 1750 1900 1900 2100 Width mm 1000 1050 1050 1150 1250 1600 1700 1700 Height mm 1200 1600 1600 1700 1800 1950 2000 2100 Parameter After Purification
Vacuum Transformer Oil Filtration Plant Dielectric Oil Purification Machine Transformer Oil Filtration Machine Application scope ZYD series vacuum transformer oil filtration machine is a typical product, develop and produced by HOPU Oil Purifier Manufacturer as especial equipment for dehydration, degassing, purification process of various kind of insulation oils in electrical transformers and circuit breakers etc,. it is designed on vacuum drying principle, accurate fine filtration and other modern technique . Characteristics 1. Precise multi-stage filtration system adopts high quality filtering materials and big capacity of containing pollutants to remove solid mechanical impurities in the oil effective. 2. The constant electric heating system is easy to operate the oil temperature increases quickly and temperature is even and constant, suitable for different kinds of oil. 3. High quality filtration element which can resist acid, alkali and high temperature, the mechanic strength is high and service life long 4. No environment pollution function in many cases Guarantee value: Moisture PPM 5 Gas content % 0.1 Impurity size ¼1 (no free carbon) Breakdown voltage kV70 IFT dynes/cm Acid value mgKOH/g0.03 Dielectric loss factors tg´(90 C)0.001
Ultra High Voltage Vacuum Transformer Oil Filtration Machine (1000KV, ±800KV, 750KV, ±660KV project) ( two stage vacuum chamber) for Series ZYD-U Untra High Voltage Transformer Oil Treatment Plant Vacuum Transformer Oil Purifier Application: ZYD-U Series Ultra-high voltage Transformer Oil Filtration Machine with Double Vacuum Distillation is for Ultra-High Voltage transformers like 500KV, 750KV, 1000KV, it is mainly used to improve the properties of insulation oil for 66KV to 500KV project. It can remove trace water, gas, particulate matters etc. from the insulating oil effectively and rapidly so as to boost performance of transformers, circuit breakers, mutual inductors, cable and capacitors which has insulation system. ZYD-U series specialize in purifying branded oil, insulating oil of high voltage and super high voltage transformer. Additionally, it is suitable for treating low viscosity lubrication oil. Features: 1.ZYD-U series Ultra-High Voltage Vacuum Transformer oil purifying machine has one pot with two-stage vacuum-segregating space, it come into being different pressure so as to keep oil line balance between two stages. 2.The pump of this product is adopted vacuum-pump imported from Europe, which have preceding level in the world, and with high air pump speed so as to get high working vacuity. 3.As the new technology, vacuum-segregating employs particular spinning disk and stainless steel machine with dehydration and air pump so that enlarge the area of segregating and coming to three-dimensional evaporation. 4.Using new type of heating equipment , it can reduce heating burden and extend oil life. 5.Oil level control adopt photoelectric way which the main components is imported from Switzerland and have features of sensitive control, exactitude so much as feel the spume of oil, mount the equipment to prevent super high and super low oil level. Spurting oil phenomena is never appeared. 6.As the clients requirement, they could choose equipment which their components were all or partly imported from overseas. Include touching screen and flow gauge is can be selected according to customers. This series could meet different kinds of customers need. 7. ZYD-U series Ultra-High Voltage Vacuum Transformer oil purifying machine equips filter assemblies imported from U.S.A. and it has large filtering area, strongly absorbent-dirt capability, high filtering precision. 8. Whether clients choose the oil pump from domestic or abroad, they all must be airproofed by our factory, moreover running without noise and leakage. extended oil life
Model vfd series utilizes coacervation technology, coalescing technology, separating technology and refined purification technology. Comparing to model vf series, it is equipped with roots vacuum system, second stage of separating system to improve the effect of purification. To remove free, soluble water, carbon, free and dissolved gases and particulate matters from insulating oil effectively and rapidly.
Achieving proper cleanness level in hydraulic and lubrication systems requires the successful capture and removal of contaminants. Purification must be done by minimizing fluid oxidation, maintaining lubricity properties and reducing aeration. LVP Hydraulic Oil Filtration Cleaning Equipment removes 100 percent of free water and 80 percent of dissolved water. It also can removes 99 percent of particulate more than 1 micron. LVP Hydraulic Oil Filtration Cleaning Equipment is designed to be robust and reliable under the most arduous of conditions. All components are easy to maintain and filter elements are readily accessible Features: 1. LVP Hydraulic Oil Filtration Cleaning Equipment extends reliability of lubrication systems and the life of system components and fluids 2. Coalescing technology combining vacuum system and precise filter elements 3. Extending fluid life, improving productivity and reducing time of fluid changes. 4. Hydraulic oil purified by LVP Hydraulic Oil Filtration Cleaning Equipment can achieve NAS 6 grade cleanness level.
Application: It is applied to recover and purify various high-precision lubricating oil, such as hydraulic oil, mechanical oil, coolant oil, gear oil, heat treatment oil. According to the lubricating oil's nature, this machine can rapidly remove water, gas, particulate matters and impurities from lubrication oil, so can guarantee lubricating system of machine to work properly and prolong machine's lifetime. Advantages: This machine can fast degas, dewater, remove impurities and volatile matter (e.G. Ethyl alcohol, gasoline, ammonia). It enhances the oil quality, restores the lubricating oil viscosity, flash point and improves the oil capability, guarantees the hydraulic system, dynamic system and lubricating system running normally.
Application: It is applied to treat various unqualified insulating oils, including aging transformer oil, mutual inductor oil, switch oil ect. Advantages: It's a new-type of high effective vacuum oil purifier with the duplex 3d stereo-evaporation technology and g technology. Adopting the technology, which removes impurities through double fh trapezoidal network and absorbs by high polymer without mechanical power, it's five to eight times more effective than the common vacuum oil purifiers. The consumption of energy is low and it doesn't require other wearing materials. Features: 1 bi-infrared liquid duplex 3d stereo-evaporation technology, dewatering and degassing effectively 2 distinctive removing impurities technology of filtering through double fh trapezoidal network and absorbing by high polymer without mechanical power 3 bi-infrared liquid level automatic controller system 4 trinity inter locked preventive device 5 it can work independently, and can also work with the oil regeneration system 6 it can work as vacuum oiling machine or vacuum drying machine to the power equipment, like transformer 7 automatic testing the oil dielectric strength and printing out the result 8 it can work on line contact
DSP Coalescence-separation Diesel Fuel Oil Filtration Systems uses coalescing filter to separate the free and dissolved water from oil, meanwhile, it also equips separation filter, which removes the water drop by gravity, falling into the water tank. DSP Diesel Fuel Oil Filtration Systems equips micro filter elements to remove the particles and cleanness up to NAS 6 grade. The oil purifier realizes online running with fuel filled, turbine oil filled and lubricating oil filled systems, especially good for water- leakage systems. Features: 1.Rapidly removing large amount of water from oil and water content reach 100 PPM. 2.The working conditions of all the parts are displayed clearly, monitoring, alarming, action control and safety stop enable the oil purifier to run online. 3.The coalesced oil takes the least restricted path to exit and rises or floats through the media to the top of the bulk liquid surface. 4. DSP Diesel Fuel Oil Filtration Systems can remove the impurities through coarse filter, protecting filter, and fine filter.
Series tya vacuum lube oil purifier is mainly for purifying unqualified lubricating oil, hydraulic oil, compressor oil, refrigeration oil and other industrial oils, this machine can rapidly separate water, gas, particles and volatile matter (such as alcohol, gasoline, ammonia, etc.) from oil, restoring oil viscosity, flash point and performance. The treated oil can reuse again in various industrial equipments. It is widely applied in petroleum, chemical, mining, metallurgy, electric power, transportation, machinery manufacturing, railway etc.
