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SF6 Recovery System
quality Manual Operation Basic SF6 Recovery Device 36m3/h Compressor factory

SF6 Gas Tester
quality SF6 Density Relay ChecSF6 Density Meter Check 0.2 Level factory

SF6 Leak Detector
quality How to choose a leak detector for on-site leak detection，Quick response and high sensitivity factory

Gas Leak Detector
quality UNLOCK the secret to xp-1a, Sulfur Hexafluoride Gas Leak Detector Battery factory

Dew Point Meter
quality Fully automatic Portable Dewpoint Meter Monitor For N2 H2 & SF6 Testing factory

Online Monitoring System
quality Handheld RS485 SF6 Gas Online Ph Monitoring System Anti Interference factory

Dry Air Equipment
quality Dry air source, producing dry air, filtering method to produce dry air factory

SF6 Vacuum Pump
quality Vacuum inflating trolley, 15m3/h, 63m3/h, 100m3/h factory

Gas Mixing Unit
quality SF6 N2 C4F7N Gas Blending System Mixing Device Industrial Grade factory

Refrigerant Recycling Machine
quality 14L Automatic Refrigerant Recovery Machine 134a/12 for Auto Repair Shops factory

Refrigerant Leak Detector
quality 9V Electronic Refrigerant Leak Detector For SF6 R22 R410 R600 CO2 NH3 factory

SF6 Gas Purification
quality Purification Device Can Obtain 99.99% SF6 Meeting The New Gas Standard Reducing Emissions factory

SF6 Accessories
quality High precision pressure gauge, dry air inflation kit, density relay, safety valve factory

Partial Discharge Detector
quality Live Insulator Fault Partial Discharge Detector Tester 6kV-500kV With Laser Aiming factory

C4F7N Series Instruments And Equipment
quality C4F7N Mixing Ratio Tester C4F7N CO2 O2 Moisture Content factory
China Shanghai Kstone S&T Development Co .,LTD.
Shanghai Kstone S&T Development Co .,LTD.
Manufacturer of SF6 testing instruments and equipment with the most complete range of products from China, with 13 years of professional experienceCompany ProfileLeading SF6 testing equipment manufacturer (with over 1000 customers all over the word)Passed ISO9001 new version certificationDouble soft certification enterpriseNational level high-tech enterprise, specialized and innovative enterprise, national level technology-based small and medium-sized enterpriseNational standard: "GB/T11023-2018 ...
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SF6 Recovery System & SF6 Gas Tester

quality Small oil-free compressor, vacuum recovery, fully automatic control factory

Small oil-free compressor, vacuum recovery, fully automatic control

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quality 500L-2000L SF6 Recovery Machine,customizable large recovery inflation device factory

500L-2000L SF6 Recovery Machine,customizable large recovery inflation device

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quality Dew Point SF6 Gas Tester instrument 10W 220V factory

Dew Point SF6 Gas Tester instrument 10W 220V

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quality Rechargeable SF6 Leak Detector Pointer LCD Screen High Sensitivity OEM factory

Rechargeable SF6 Leak Detector Pointer LCD Screen High Sensitivity OEM

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quality SF6 qualitative gas, halogen gas. Refrigerant leak detector, replacing xp-1a factory

SF6 qualitative gas, halogen gas. Refrigerant leak detector, replacing xp-1a

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quality Fully automatic Portable Dewpoint Meter Monitor For N2 H2 & SF6 Testing factory

Fully automatic Portable Dewpoint Meter Monitor For N2 H2 & SF6 Testing

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quality Handheld RS485 SF6 Gas Online Ph Monitoring System Anti Interference factory

Handheld RS485 SF6 Gas Online Ph Monitoring System Anti Interference

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quality Dry air source, producing dry air, filtering method to produce dry air factory

Dry air source, producing dry air, filtering method to produce dry air

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quality 3-channel ，300l/s vacuum unit，Vacuum pumping and inflation, DN20 pipeline factory

3-channel ，300l/s vacuum unit，Vacuum pumping and inflation, DN20 pipeline

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More Products
Titanium Alloy Sintering SF6 Accessories Nitrogen Tank Connector
Industrial Gas Inflation System SF6 Connector 15 Piece Set DN15-DN25 Customized
One turn multi gas distributor, with 1 inlet and 3 outlets，Multi Channel Converter
Rechargeable handheld SF6 gas leak detector ，qualitative leak detector, infrared principle
Automatic Gas Mixing Unit Distribution Dilution Device system ，Flow Meters
220V50Hz， Mobile SF6 vacuum inflating trolley,3-001-4-R002,DN8,Cylinder Weighing
Dilo Nitrogen Dry Gas SF6 Cart Moisture & Particle Filter 50ppm
SF6/N2 mixing device, high flow mixing, 30% SF6, SF6 And CF4 Mixing,C4F7N And CO2 Mixing
Customized Online Monitoring System Humidity Meter SF6 Density Monitor
Multi Gas Electrochemical Sf6 Gas Monitor Sniffer Leak Detector IP65 Waterproof
Dual wave infrared quantitative leak detector, simple model, 0.1ppm
Adjustable Quantitative SF6 Gas Sensor Dilo Leak Detector Equipment
Portable SF6 Gas Sensor Leak Dilo Detector NDIR Infrared
Combustible Gas SF6 Gas Leak Detector NDIR Sensor GB/T11023-2018 Certified
SF6 on-site leak detection, able to detect minor leaks and respond quickly
Customized portable SF6 gas leak detection sensor, most suitable for on-site leak detection
Precision of 0.01ppm, digital display of concentration, high sensitivity, portable leak detector
0.1ppm SF6 R22 Refrigerant Gas Leak Detector NDIR Sensor Touchscreen control
CH Refrigerant Sf6 Sniffer Leak Detector NDIR Sensor For CO₂ NH₃
Oil Lubricated Telescopic Leak SF6 Gas Detector 0.01ppm With Digital LCD Display
News
Latest company news about The first 500kv GIL using C4 gas is operating with electricity in China
The first 500kv GIL using C4 gas is operating with electricity in China
2025-06-18 11:28:52
The first 500kv GIL using C4 gas is operating with electricity in China The first environmentally friendly gas insulated equipment with the highest voltage level in the country has successfully operated with electricityRecently, the first 550 kV perfluoroisobutyronitrile (C4F7N, abbreviated as C4) environmentally friendly gas insulated metal enclosed transmission pipeline (abbreviated as GIL) in China was put into live operation at the 500 kV Rongsheng substation in Anqing. This is the highest voltage level environmentally friendly gas insulated electrical equipment for engineering applications in China.Sulfur hexafluoride (SF6) gas is widely used in electrical equipment due to its excellent insulation and arc extinguishing properties, but it has a high potential for greenhouse effect and has been strictly controlled and constrained.State Grid Corporation of China issued Document No. 290 in 2022, promoting SF6/N2 mixed gas as a substitute for SF6 pure gas in GIS and GIL. Currently, SF6/N2 mixed gas is basically used for all newly built 110-220kV GIS in State Grid of China. C4 is a new type of environmentally friendly insulating gas, with a greenhouse effect about one tenth that of sulfur hexafluoride and an insulation strength about 2.2 times that of sulfur hexafluoride. It has become internationally recognized as the most promising SF6 alternative gas and is one of the solutions to replace SF6. To solve this problem, since 2017, Anhui Electric Power Co., Ltd., a subsidiary of State Grid Corporation of China, has collaborated with advantageous units such as China Electric Power Research Institute Co., Ltd. to carry out joint research and development. In 2019, the localization of C4 gas industrial preparation was successfully achieved, and the insulation design basis and compatibility evaluation indicators for C4 gas electrical equipment were proposed. In May 2021, the 12 kV C4 environmentally friendly gas ring main unit developed by the team was put into operation on the grid in Anhui and achieved large-scale application. The first batch of equipment has been running stably for over 4 years with excellent performance, further verifying the reliability of long-term operation of C4 environmentally friendly gas.
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Latest company news about You know what? Who can produce C4 gas?
You know what? Who can produce C4 gas?
2025-06-17 16:12:58
You know what? Who can produce C4 gas?   3M™ Novec™ 4710 Insulating Gas is a sustainable alternative to sulfur hexafluoride (SF6) for electrical equipment insulation and arc quenching applications. It offers excellent dielectric properties, a wide range of operating temperatures and significant reductions in environmental impacts compared to SF6. Novec 4710 gas is non- flammable and has a wide safety margin for workers when used as designed for intended applications. This SF6 alternative also has important environmental properties such as low global warming potential (GWP) when mixed with inert gases and zero ozone depletion potential (ODP). Novec 4710 gas in pure form has a relative dielectric strength two times greater than SF6 at a given pressure.   On December 20, 2022, 3M announced that it will cease production of 58 Per/polyfluoroalkyl substances (PFAS) products, including perfluoroisobutyronitrile (C4F7N, 3M Novec 4710) and perfluoropentanone (C5F10, 3M Novec 5110), by the end of 2025 to reduce or eliminate the impact of PFAS on climate, environment, and ecological health.   In fact, in the ultra-high voltage industry, research and testing on using C4 or C5 instead of SF6 have not been interrupted. In China, many companies have passed type tests for their products, but have yet to mass produce them; Similarly, the production and supply of C4 and C5 gases are also limited to sample trials, and gas prices remain high. Currently, C4 prices are at 3000 RMB/kg, and it is reported that the largest production scale enterprise is yuji,It is said that there is a production line with an annual output of 100 tons. The current C4 manufacturing companies in China include Yuji ,HEXAFLUO, Haohua, and Ankura.   KSTONE  is a leading enterprise in China that develops C4 and C5 related instruments and equipment;and has precise cooperation with 3M and  chinese C4 or C5 manufacturers ;  
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Latest company news about Attended the Mumbai Power Show in India from February 4-6, 2019, booth number D23
Attended the Mumbai Power Show in India from February 4-6, 2019, booth number D23
2025-06-09 05:07:11
According to the arrangement of the China Electrical Equipment Industry Association, kstone participated in the power exhibition held in Mumbai, India from February 4-6, 2019; At the meeting, some SF6 instruments and meters were exhibited, such as portable SF6 quantitative leak detectors, LF-200, LF-300, SF6 qualitative leak detectors, such as Smart-01b based on corona principle, Samrt-200-Fr based on infrared principle, and KS30 SF6 comprehensive tester; The booth is still very popular We were also invited to attend the opening ceremony organized by the Indian Ministry of Energy, where we cut the ribbon and lit candles; The exhibition has ended, and we exhibitors have taken a group photo
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SF6 Leak Detector

The most suitable quantitative leak detector for finding leaks, suitable for use in workshops

The best tool for finding leaks, with fast response and sensitivity up to 0.01ppm, used by thousands of factory customers in China

Instant Digital SF6 Leak Detector NDIR Gas Sensors Explosion Proof

Gas Leak Detector

Corona principle, halogen gas leak detection, qualitative leak detector, xp-1a

TIF, ROBINAIR,BOSCH， Halogen gas leak detector, xp-1a

SF6 Corona Principle Gas Leak Detector 3.7V Rechargeable

Dew Point Meter

High Precision SF6 Dew Point Meter Temperature Instrument Analysis For N2 H2

Fully automatic Portable Dewpoint Meter Monitor For N2 H2 & SF6 Testing

Cold Mirror Method，Portable dew point meter, high-precision dew point meter
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