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China NDZRC-10A Transformer DC Resistance Tester (with Battery) - China Supplier
NDZRC-10A Transformer DC Resistance Tester (with Battery)
Negotiable
Category: Instruments & Meters/Testing Machines/Universal Testing Machines
Company: 武汉诺顿电气有限公司
Product Description: Product Introduction       DC resistance of transformers is a mandatory test item during the manufacturing process, factory acceptance tests, installation, commissioning tests, and preventive maintenance tests conducted by power departments. It effectively identifies manufacturing defects such as material selection, welding issues, loose connections, missing strands, broken wires in transformer windings, as well as problems that arise during operation.       The Transformer DC Resistance Tester is an innovative product equipped with a high-capacity lithium battery. It is compact and portable, making it easy to carry. It is suitable not only for measuring inductive test objects such as transformers, mutual inductors, and reactors, but also for resistive test objects like copper busbars, wires, and switch contacts. The instrument offers fast testing speed and high accuracy.Product Features◆Adaptive power supply: lithium battery or 220V AC. A single charge allows continuous testing of hundreds of transformer DC resistance tests. The testing process is simple and convenient.◆Six output current ranges, with a maximum output of 10A current and 25V voltage. Automatic current selection for ease and efficiency.◆Wide measurement range and high accuracy: 500μΩ to 50kΩ.◆Resistance temperature conversion function.◆Multiple protection features: back EMF protection, open circuit protection, power-off protection, and overheat alarm.◆5.6-inch ultra-large industrial-grade high-brightness color LCD screen, clearly visible even in strong sunlight.◆Equipped with a printer for easy data printing.◆On-board storage and USB storage capabilities.Technical Parameters more>
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China Steel Reinforced Polyethylene Composite Pipe with Perforated Web - China Supplier
Steel Reinforced Polyethylene Composite Pipe with Perforated Web
Negotiable
Category: Others
Company: 四川东泰管业有限公司
Product Description: Research and manufacturing of perforated steel strip polyethylene composite pipes for over 20 years1) For Cold Water Use Perforated Steel Strip Polyethylene Composite PipeThe perforated steel strip polyethylene composite pipe is a composite pipe that uses a perforated pipe welded from cold-rolled steel strip as the reinforcing skeleton and is combined with thermoplastic plastic. Due to the introduction of the reinforcing skeleton, the heat resistance and strength of the pipe are significantly improved. In terms of process, this product introduces an adhesive layer between the steel strip and polyethylene, and uses argon protection during steel strip welding to prevent oxidation of the molten steel during high-temperature welding. This solves the problem of water channeling in composite pipes, making the performance of the composite pipe even better.1. Has higher rigidity and impact resistance than plastic pipes, with a low expansion coefficient and creep resistance similar to steel pipes.2. Double-sided anti-corrosion, with the same anti-corrosion performance as plastic pipes, and is corrosion-resistant. Operating temperature is increased.3. Low thermal conductivity.4. Smooth inner wall, no scaling, head loss is 30% lower than that of steel pipes.5. Pipe connections use electrothermal fusion, a mature technology, with a wide variety of pipe fittings.6. Lightweight, easy to transport and construct.7. By adjusting the thickness of the steel plate and plastic, pipes of different pressure grades can be manufactured. It is very convenient to change the parameters of the reinforcement to produce pipes of various pressure resistance levels.8. Using plastics with high temperature resistance, such as heat-resistant PE-RT polyethylene, random copolymer polypropylene (PP-R), etc., can produce temperature and pressure resistant pipes.9. High overall reliability of the pipe, with a service life of up to 50 years under normal conditions.   2、For Hot Fluids Perforated Steel Strip Heat-Resistant Polyethylene (PE-RT) Composite Pipe (Dongtai Pipe Industry)This product uses a perforated pipe welded from cold-rolled punched steel strip as the reinforcing skeleton and heat-resistant polyethylene (PE-RT) as the main material. Due to the introduction of the reinforcing skeleton and heat-resistant polyethylene (PE-RT), the pressure resistance and heat resistance of the pipe are significantly improved. This allows composite pipes originally only suitable for low-temperature (≤40°C) water supply to be used for hot water transportation, secondary heating pipelines, and pipelines in chemical and pharmaceutical industries for transporting high-temperature media.3) Application Areas1、Chemical Industry: Process and discharge pipes for transporting corrosive gases, liquids, and solid powders in industries such as acid, alkali, salt manufacturing, petroleum, fertilizers, pesticides, pharmaceuticals, chemicals, mining, rubber, and plastics.2、Oil and Gas Fields: Gathering and transportation pipelines for oil-containing wastewater, gas field wastewater, oil-gas mixtures, and polymer solution reinjection in oil wells, as well as secondary and tertiary oil recovery and gathering process pipelines.3、Mining: Slurry, tailings, ventilation pipes, and engineering pipes.4、Textile, Printing, and Paper Industries: Process distribution and discharge pipes for transporting corrosive media.5、Municipal Engineering: Urban building water supply and drainage, drinking water, and hot water return transportation.6、Non-Ferrous Metals: For transporting corrosive media in non-ferrous metal smelting.7、Agriculture: Deep well pipes, filter pipes, drainage pipes, ballast water pipes, ventilation pipes, etc.8、Seawater Transportation: Seawater desalination plants, coastal power plants, seawater transportation in port cities, submarine pipelines, and optical fiber (cable) conduits.9、Thermal Power Engineering : Process water return transportation, waste slag transportation.10、Highways: Buried water supply and drainage pipes, cable conduits. more>
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China A47H-16C Spring-Loaded Safety Valve with Handle - China Supplier
A47H-16C Spring-Loaded Safety Valve with Handle
Negotiable
Category: Machinery & Equipment/Valves/Safety Valves
Company: 上海菲亿阀门有限公司
Product Description: Shanghai Feiyi Valve Co., Ltd. adheres to the business philosophy of customer first, integrity-based, and innovation-driven, wholeheartedly providing users with high-quality valve products and more comprehensive after-sales services. We pay attention to every detail with passion and professionalism, meticulously refining every aspect of our products. We meet your personalized pump and valve system solution needs, offering complete fluid control solutions. We sincerely seek extensive cooperation with friends from all walks of life to jointly create a bright future! Warmly welcome friends from all sectors to discuss business, and we are committed to mutual benefit, win-win cooperation, common development, and shared success with domestic and international merchants!A47H-16C spring-type safety valve with handle, A47H spring-type safety valve with handle, spring-type safety valve with handle,Application:This valve is suitable for equipment or pipelines with working temperatures ≤350℃, such as steam and air, serving as an overpressure protection device. more>
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China Oxygen concentrator with bottle filling function - China Supplier
Oxygen concentrator with bottle filling function
Negotiable
Category: Others
Company: 杭州乐成气体设备有限公司
Product Description: Bottled oxygen is gradually being replaced by oxygen produced by oxygen generators due to the inconvenience of cylinder replacement and high costs. Hangzhou Lecheng Gas Equipment Co., Ltd. has launched a cylinder-filling oxygen generator that automates the entire process of cylinder filling. It offers high oxygen purity, low cost, and a quick return on investment.Working Principle of the Cylinder-Filling Oxygen GeneratorThe oxygen generator's cylinder-filling system operates based on the pressure swing adsorption (PSA) principle, using zeolite molecular sieve as the adsorbent. Due to the selective adsorption characteristics of the zeolite molecular sieve, nitrogen is largely adsorbed by the sieve, while oxygen is enriched in the gas phase, achieving nitrogen-oxygen separation under the effect of pressure swing adsorption. The system employs a dual adsorption tower process: one tower adsorbs and produces oxygen, while the other undergoes desorption and regeneration. Through PLC intelligent program control, pneumatic angle seat valves open and close, enabling the two towers to alternate cycles and continuously produce high-purity oxygen.Technical Parameters of the Cylinder-Filling Oxygen GeneratorOxygen Output: 3-150 Nm³/hOxygen Purity: 90-95%Oxygen Pressure: 0.1-0.3 MPaDew Point: ≤ -48°CComponents of the Cylinder-Filling Oxygen Generator1. Compressed Air Purification UnitThe compressed air provided by the air compressor first enters the compressed air purification unit. The compressed air passes through a pipeline filter to remove most oil, water, and dust, then undergoes further dehumidification via a refrigerated dryer, followed by oil and dust removal through a precision filter. It is then deeply purified by an ultra-precision filter immediately afterward. Based on system conditions, UE Gas has specially designed a compressed air oil remover to prevent potential微量 oil penetration, providing full protection for the molecular sieve. The rigorously designed air purification unit ensures the longevity of the molecular sieve. The clean air processed by this unit can be used as instrument air.2. Air Storage TankThe air storage tank serves to reduce airflow pulsation and act as a buffer, thereby minimizing system pressure fluctuations. It allows compressed air to flow smoothly through the compressed air purification unit, ensuring thorough removal of oil and water impurities and reducing the load on the subsequent PSA oxygen-nitrogen separation unit. Additionally, during the switching of the adsorption towers, it supplies a large volume of compressed air needed for rapid pressurization within a short time, enabling the pressure in the adsorption tower to quickly rise to the operating pressure and ensuring reliable and stable operation of the equipment.3. Oxygen-Nitrogen Separation UnitThe adsorption towers, filled with specialized molecular sieve, consist of two units: A and B. When clean compressed air enters the inlet end of Tower A and flows through the molecular sieve toward the outlet end, nitrogen is adsorbed, and product oxygen flows out from the outlet end. After a period, the molecular sieve in Tower A becomes saturated with adsorption. At this point, Tower A automatically stops adsorbing, and compressed air flows into Tower B for nitrogen adsorption and oxygen production, while Tower A undergoes molecular sieve regeneration. Regeneration of the molecular sieve is achieved by rapidly depressurizing the adsorption tower to atmospheric pressure to remove the adsorbed nitrogen. The two towers alternate between adsorption and regeneration, completing oxygen-nitrogen separation and continuously outputting oxygen. The entire process is controlled by a programmable logic controller (PLC). When the oxygen purity at the outlet falls below the set value, the PLC program activates, automatically opening the vent valve to discharge non-compliant oxygen, ensuring it does not reach the point of use.4. Oxygen Buffer TankThe oxygen buffer tank is used to balance the pressure and purity of the oxygen separated from the nitrogen-oxygen separation system, ensuring a stable and continuous supply of oxygen. Additionally, after the adsorption towers switch operations, it partially refills the adsorption tower with its own gas, aiding in pressurization and protecting the bed layer. It plays a critical auxiliary role in the equipment's operation.5. Oxygen Filling SystemThe oxygen filling system includes an oxygen balloon, oxygen booster, and oxygen filling manifold, enabling the filling of finished oxygen into steel cylinders.The above is a product introduction to the cylinder-filling oxygen generator from Hangzhou Lecheng Gas Equipment Co., Ltd. For more product information, please feel free to call for consultation. more>
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China Manhole with core - China Supplier
Manhole with core
Negotiable
Category: Others
Company: 洪湖市蓝天安环节能设备有限公司
Product Description: Generally, the cylinder where the manhole of a typical oil tank connects with the tank wall penetrates through the tank wall. This type of manhole is not conducive to the lifting and sealing of the floating roof. A core-equipped manhole features an additional core plate inside the manhole cover that matches the curvature of the tank wall and is flush with it. For ease of opening and closing, a rotating arm and lifting lug are installed on the connecting cylinder at the orifice, allowing the manhole cover to remain attached to the oil tank during operation. It is installed approximately 2400 mm from the bottom plate of the oil tank for maintenance personnel to inspect the floating roof. more>
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China Marine Butterfly Valve with Travel Switch - China Supplier
Marine Butterfly Valve with Travel Switch
$188
Category: Machinery & Equipment/Valves/Butterfly Valves
Company: 上海精骋阀门制造有限公司
Product Description: Marine Butterfly Valve with Limit Switch, Marine Butterfly Valve with Travel Switch, Marine Butterfly Valve with Feedback Device, Marine Desulfurization Special Butterfly Valve 104 Special Hydraulic Butterfly Valve for Marine Desulfurization Equipment, Special Pneumatic Butterfly Valve for Marine Desulfurization Equipment, Special Butterfly Valve with Limit Switch for Marine Desulfurization Equipment more>
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China Self-tapping screw with square groove drill bit - China Supplier
Self-tapping screw with square groove drill bit
Negotiable
Category: Hardware & Tools/Cutting Power Tools/Drill Bits
Company: 如皋市江朗五金经营部
Product Description: "Production and Sales/ Anti-Corrosion Nails/ Self-Tapping Screws/ Stitching Nails/ Drill Tail Screws/ Waterproof Nails/ Coated Nails/ Photovoltaic Screws/ Stainless Steel Bimetallic Composite Nails. 18001482661Applicable Projects: Steel Structure Engineering, Livestock Engineering, Solar Energy Engineering, Door and Window Curtain Wall Engineering, Photovoltaic Power Generation Engineering, Guardrail Installation Engineering, Sunshade Canopy Engineering, Aluminum Alloy Door and Window Engineering, Sheet Metal House Engineering, etc.Source Factory for Export Quality" more>
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