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305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator

Good quality Grading Ring for sales
Good quality Grading Ring for sales
The products are very accurate according to the Solidworks drawings, and HIGHV team is very professional, ask me every detail before production patiently. It is very lucky that we find this supplier.

—— Michael

We have received the corona rings, and they are exactly what we were hoping for! No problems at all! Thanks again for your assistance.

—— Mark

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305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator

China 305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator supplier
305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator supplier 305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator supplier 305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator supplier 305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator supplier

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Product Details:

Place of Origin: CHINA
Brand Name: HIGHV
Certification: SGS/ISO

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiable
Packaging Details: 36000 pieces per month for grading rings
Delivery Time: 15-35 days or as per customer's quantity request
Payment Terms: L/C, T/T, Western Union, MoneyGram, D/P, D/A
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Detailed Product Description
Name: Grading Ring Alloy: Aluminium 6061/6063/1060
Voltage: 220kV Usage: Composite Insulator
Software Support: WORD/CAD/UG/SOLIDWORKS Process: Aluminium Pipe Bending/Welding/Cutting
Drawings: PDF/CAD/JPG/3D Pipe Diameter: 50mm-200mm
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Grading Ring Aluminium Pipe Bending Type 305mm Diameter For Composite Insulator



Quick Detail:


1. Product Name: Grading Ring
2. Raw Material: Aluminum/Galvanized Steel
3. Production Process: Pressure Die Casting Or Pipe Bending And Welding
4. Certificate: ISO9001
5. Surface Color: Silver Smooth
6. Application: For Composite Insulator
7. MOQ: 100 Pieces
8. Package: Cartons or wooden cases or as customer's requirements
9. Delivery Time: Within 15-35 working days after confirming order



Advantages of products:

  1. Competitive price with good quality.
  2. Low MOQ (100 pieces is even acceptable in some special conditions).
  3. Customized sizes and specifications /OEM available.
  4. In Shanghai and Near Ningbo port of China, convenient transportation.
  5. Short lead time (7-30 working days according to order quantity).


Manufacture Process:

  • Drawing(Customized drawings are accepted ) →confirm samples→purchase raw material→ bending→CNC → welding→surface treatment→ Inspection→ Package→Shipment
  • Raw Material: stainless steel, aluminium alloy, copper, etc
  • Surface finish treatment: zinc/nickel/chrome/plated, spray paint, anodizing, polishing and coating etc, etc



Our Service:

  • Your inquiry will be replied within 12 hours.
  • Well trained and experienced sales team can reply your inquiries in English.
  • During working time, Email will be replied to you within 2 hours.
  • OEM/ODM projects are highly welcomed. We have strong R&D team.
  • The order will be produced exactly according to order details and proofed samples. Our QC department will submit inspection report before shipment.
  • Your business relationship with us will be confidential to any third party.
  • You can enjoy our good after-sale service.



What is Grading Ring?

Compared to electric porcelain insulator, composite insulator is featured with high intensity, light weight, high wet-flashover and flashover voltage, easy operation maintenance, strong ability of impulse withstand, widely applied to transmission line suspension string, and has spread application in tension string in recent years. Surface field distribution and potential distribution for composite insulator without corona ring is greatly uneven, due to composite insulator structure characteristics and high resistivity feature of silicon rubber, surface field density is highest at mandrel and steel cap joint, distribution voltage is highest at first umbrella dress near high voltage end. Exorbitant surface field density not only generate corona discharge, affect transmission line electromagnetic environment, produce audible sound pollution, but also cause strong electric erosion, causing further insulator aging. Corona ring installation is the normal solution to the problem of uneven potential field density distribution at insulator high voltage end. Installation of corona ring helps to transfer maximum field density from insulator surface to corona ring surface, thus effectively improves electric field distribution on insulator surface.





HIGHV custom-makes solutions and high voltage grading rings for High voltage Surge Arrestor as customer's drawing request.

  1. High Voltage Transmission Line,
  2. GIS (Gas Insulated Switchgear),
  3. Substation,
  4. Surge Arrestor,
  5. Composite Insulator,
  6. Power Transformer, current transformer, AC test transformer, voltage transformer, etc,
  7. Power cable (accessory),
  8. High voltage laboratory (High voltage test equipment),
  9. Impulse voltage test system,
  10. HV capacitor bank,
  11. HV transmission line (overhead line)



Packaging Details:


  • With plastic bag, to be packed in wooden cases
  • To be packed in cartons
  • Use glues tape to seal cartons
  • Deliver out by DHL,FEDEX etc Or according to customers' requirement


MOQ No limited or small order is workable
Port Shanghai port
Payment L/C, T/T
Supply Ability 10000 pcs per month.
Delivery Time Within 15-35 Working Days
Packaging Paper carton, Wooden box, Steel pallet or Customized
Shipment By Sea





Q: What’s your MOQ?

A: Our MOQ is 1 piece.


Q: How long it takes to get quotation?

A: We will submit formal quotation with 24 hours after your products information received.


Q: What’s information needed for accurate quotations?

A: We need drawings, quantity and any other specific requirements.


Q: What’s your production time?

A: Generally, we need 15~35 working days for prototype order, but it can be shortened for urgent order.


Q: How to transport my products?

A: If the goods is less than 200kg, we suggest to use express delivery. We have long-term cooperation with FedEx/DHL/UPS and enjoy much discount. If the goods are more than 200kg, we can arrange shipment as per customer’s requirements.



305mm Diameter Corona Ring Pipe Bending Type For Composite Insulator




  • Aluminium Corona Ring
  • Aluminium Shielding Tube
  • Aluminium Corona Cover
  • Aluminium Conductor
  • Aluminium Flange
  • Aluminium Corona Sphere

Contact Details
Yangzhou Highv Mechanical And Electrical Equipment Co.,Ltd.

Contact Person: Dong

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