Grading Ring
- Quotation with Technical Data
- 24/7 Service Fast Response
- Customized Size
- Prime Quality Raw Material
- Surface Treatment
- Drawing Design Service
Top Grading Ring Supplier in China
As the top grading ring supplier and manufacturer in China, HIGHV produces and manufactures various grading rings.
A grading ring, it is similar with corona ring, which is also used on high voltage equipment. But they encircle insulators rather than conductors.
Although they may also serve to suppress corona, grading rings main purpose is to reduce the potential gradient along the insulator, preventing premature electrical breakdown.
The grading ring is widely used for insulators industries. The grading ring surrounds the end of the insulator next to the high voltage conductor.
HIGHV supplies different aluminum grades: 1060, 6061, 6063, etc.
HIGHV offers top grading ring shielding solutions that include types, sizes, and alloy options during production. We always adhere to standard specifications. Communicate with our expert team now!
Grading Rings Data Sheet
| Product Name | Grading Ring |
| Raw Material | Aluminum Alloy |
| Matching Fasteners | ASTM 304 Stainless Steel Or Hot Galvanized Steel |
| Surface Finish | Polishing Silvery Bright |
| Other Surface Treatment | Hot Galvanized/Coating Insulating Varnish |
| Tube Wall Thickness | 2.0mm-20.0mm |
| OEM/ODM | As client’s drawings requirments |
| Middle Support Plate And Bracket | Aluminum material or It can be customized as drawing requirement |
| Inner Diameter of Grading Ring | Minimum 150mm |
| Outer Diameter of Grading Ring | Maximum 1000mm |
| Production Type of Grading Ring | Pipe Bending/Pressure Die Casting |
| Operating Voltage | 170kV-4200kV |
| Drawings Support | CAD/PROE/UG/SOLIDWORKS, etc |
| Ring Mould | At stock or as your drawing new design and production |
| Packaging | Carton Box/Wooden Pallet/Wooden Case |
| Loading Port | Shanghai/Ningbo/Any Other Port In China |
*As a professional manufacturer, we strictly produce products according to the standard ASTM & GB/T
Grading Ring Customized Dimensions
Wall Thickness (mm)
2.0 ~ 20.0
Diameter (mm)
Min 150
Surface Finish
Prime bare aluminum, Polished or as per demand
Software Support
CAD/PROE/UG/SOLIDWORKS, etc
Tolerance according to ASTM
*Customized size please contact our team
Grading Ring Packaging & Shipping
The grading ring packaging can be done by wooden case or carton box.
Wooden case packaging is suitable for heavy weight ones.
Carton box packaging is always for light weight grading rings. It is also convenient for delivering by hands.
In addition, clear labels are tagged on the outside of these packages for easy identification of these rings measurements and quality information.
The big and strength pallet will be used for placing the cartons boxes. It will help packaging more stable during the shipment.
Because of the limit and customs requirements of various countries, so non-fumigation wooden pallets are widely used for carton boxes base support.
*Other special packaging will be designed as customer’s request
Grading Rings Resources
Corona Rings: Are They Needed?
Corona Rings: Are They Needed?Modeling predicts corona levels based on configuration, hardware and line voltage By Raymond Ferraro, Public Service Enterprise Group; Emilie Dohleman, Public Service Company of New Mexico;
Aluminum Corona Shielding Sphere Design For 460kV Terminal Bushing
The aluminum corona shielding sphere, also known as a corona shielding ball, is used for 460kV terminal bushings on power transformers and is primarily made from aluminum alloy. Typically, aluminum
How Does Corona Ring Help Against Corona Discharge?
How does corona ring help against corona discharge? Read on to know about the corona ring guide. This article will help you learn why does corona ring help against corona
Corona Rings VS Grading Rings – HIGHV
The corona rings and grading rings are both rings types. They are widely used in in high voltage test equipment and power systems. They play a key role in the
Corona Ring Design: The Definitive Guide (2024)
Corona ring design guide is all about how you design the corona ring in transformer bushings, insulators, transmission lines, substations, high voltage laboratory, surge arresters and more. The corona ring
5 Factors Of Corona Rings Installation: The Beginner’s Guide
High quality corona rings are easily for different devices and systems installation. In this part of the article, you are going to learn more about all details of corona rings
Need An Expert To Customized Your Grading Rings?
Grading Rings: The Ultimate Guide
Are you looking forward to finding grading rings manufacturers and suppliers in China or coming up with an idea to buy grading rings in insulator and arrester?
Check out the following buyer’s guide for high voltage test engineers, operators and beginners, we’ll offer you the high quality grading ring with 24/7 custom service to fit your drawing ideas and plans.
Contact our Highv team today to get your corona shielding solutions and details.
What Are Grading Rings?
A grading ring, it is similar with corona ring, which is also used on high voltage equipment. But they encircle insulators rather than conductors.
Although they may also serve to suppress corona, grading rings main purpose is to reduce the potential gradient along the insulator, preventing premature electrical breakdown.
How Do Grading Rings Work?
The grading ring is widely used for insulators industries.
The grading ring surrounds the end of the insulator next to the high voltage conductor.
It reduces the gradient at the end, resulting in a more even voltage gradient along the insulator, allowing a shorter, cheaper insulator to be used for a given voltage.
Grading rings also reduce aging and deterioration of the insulator that can occur at the high voltage end due to the high electric field there.
What Materials Can Be Used For Grading Rings?
With the development of technology, aluminum alloy for grading ring production has become the current trend. The use of aluminum alloys to make these rings has the following advantages:
The overall weight of the ring is reduced, which is suitable for insulator installation
Aluminum alloy also has the hardness and strength of some metal, which meets the safety standards of manufacturing
Compared with normal steel, aluminum alloy has stronger oxidation resistance
The metallic luster of aluminum alloy is better than steel, which is more in line with the appearance of grading ring
Compared with the price of stainless steel, the price of aluminum alloy is more affordable and is the choice of China grading ring manufacturers
The Features Of Grading Rings
- Material: Aluminum Alloy/Stainless Steel
- Operating Temperature: -80° C-80° C
- Polishing Bright Surface Finish
- Preventing premature electrical breakdown
Applications of Grading Rings
HIGHV custom made solutions and grading rings are widely used for below different fields:
- Insulator
- Surge arrester
- Current transformer
- High voltage test equipment
- Power transmission and transformation line
What We Can Do For Your Grading Rings Project?
Highv is one of the leading grading ring manufacturers China, Experts in Manufacturing and exporting aluminum grading rings with 30 years’ rich experience.
Our professional engineers team are skilled at AUTO CAD, PROE, SOLID WORKS and UG softwares for your grading rings design and production.
Need a quotation or technical support of grading ring in surge arrester and transmission line, call us or email us to get more information for your projects.
How To Buy Grading Rings From Us?
1. Consult: We will recommend the most suitable solutions and grading ring moulds to you after being informed by your inquiries.
2. Quotation: We will offer you with our detail quotation according to the consulted grading ring. You will get the most suitable specifications, the full support and the affordable price.
3. Process Evaluation: Buyers and our side carefully evaluate and discuss all the details (technical parameters, specifications and business terms) of the order to exclude any misunderstanding.
4. Placing Order: If you have no doubt, we will send you the proforma invoice, and then we will sign a contract with you.
5. Production: We will arrange the grading ring production immediately once receiving your signed purchasing contract and payment deposit. The coming news about production will be updated and informed to the buyer during the ring production.
6. Quality Control: The spirit of our company is that safety is the foundation of production and quality makes customers. We pay more attention to quality support, supply scope, inspection, testing standard, shipment packing, after-sales service.
7. Delivery: We will arrange the delivery as the terms in the contract after the confirmation by the buyer.
8. Custom Clearance: We will supply and deliver all the necessary shipping documents to the grading ring buyer and ensure a smooth customs clearance.
9. Support and Service: We will offer professional technical support and free service by Phone, Email, Skype, WhatsApp, Online Live Chat, Remote Service. We also have door-to-door service in some areas.
Conclusion
Grading rings are widely used for advanced power equipments.
Highv is one of the professional aluminum corona rings and grading rings manufacturers in China.
When it comes to corona rings and grading rings design, production and complete solutions, Highv’s 30 years of manufacturing experience will really show.
Feel free to inquiry us about your corona rings and grading rings projects.
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