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Insulator Projects

Insulator Projects include domestic Same-tower Double-circuit, UHV DC transmission project from China, 660 kV DC power transmission project, 800kV UHV DC transmission demonstration project, etc.

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Insulator Projects:
high-voltage DC 800KV: In early 2013, during the centralized tendering of Xiluodu Left Bank – Jinhua Zhejiang ±800 kV UHV DC transmission project from State Grid Corporation, the company again won the order to supply more than 2700 pieces of ±800 kV composite insulator products; This is the third ±800 kV UHV DC transmission project order won by us consecutively in recent years.

The company won the first domestic Same-tower Double-circuit:
In May 2012, we won the bid to supply 3356 pieces of 1000KV composite insulators for “Huainan – Shanghai Power Transmission” project, which is the first domestic same-tower double-circuit UHV AC power transmission project. “Huainan – Shanghai Power Transmission” project is the first same-tower double-circuit UHV AC power transmission project in China, starting from Huainan Anhui (in the west), passing through Southern Anhui & Northern Zhejiang, and arriving in Shanghai, with a total line length of 656 km.

The UHV DC transmission project from China:
In February 2011, the National Development and Reform Commission approved the double-circuit ±500 kV DC power transmission project from Xiluodu Right Bank Power Station to Guangdong, this project built another 2572 km of ±500 kV DC power transmission line. We won this bid to supply 5606 pieces of ±500 kV composite insulators and completed the delivery in each bid section by 30 days ahead of the delivery period, while passing the on-site inspection & acceptance successfully.

The first domestic ±660 kV DC power transmission project:
In March 2010, during the centralized tendering made by State Grid Corporation, Tianning won the first domestic ±660 kV DC power transmission project - “Ningdong – Shandong ±660 kV DC Power Transmission Project”. This project is the world’s first DC power transmission project at ±660 kV voltage level, and also is a key project among the “Electricity Transmission from West to East China” projects.

±800kV UHV DC transmission demonstration project:
In February 2009, during the centralized tendering made by State Grid Corporation, the company won the Xiangjiaba – Shanghai ±800kV UHV DC Transmission Demonstration Project to supply 4,519 pieces of composite insulators, which indicated that the company is marching into the State Grid UHV market. Xiangjiaba – Shanghai ±800kV UHV DC transmission demonstration project is the first UHV DC transmission demonstration project in China, while is the DC transmission project running the highest DC voltage and possessing the most advanced technology. Crossing the Yangtze River for four times, the project passes through eight provinces and has total length of 1891.6km.

Our products were exported to Kazakhstan:
In July 2008, the company delivered all 6,925 pieces of composite insulators for the Kazakhstan AC 500KV Transmission Project on time. In recent years, the company has exported accumulatively 11,498 pieces of composite insulators to Kazakhstan. These products run well and are consistently praised by our users; the company has also been listed as the preferred composite insulator supplier in this country.


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Orient is an international line post insulator manufacturer and supplier of high quality porcelain line post insulators and porcelain pin post insulator.
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