Transformer Porcelain Housings
35kV–800kV

in Porcelain Insulators
Source Factory · Customization Welcome

Established in 2004, the company focuses on the design, research, development, production and sales of porcelain insulators. Its porcelain housing products include:
The company operates large ball-milling and clay-processing equipment, high-speed intelligent automated gas kilns, fully automatic circulating tunnel drying rooms and kilns, CNC forming, glazing and porcelain-grinding equipment, together with a complete laboratory testing system. Current annual production capacity is 45,000 tonnes.
Product Advantages
Comprehensive sizes / Continuous performance gains / Mature forming processes

On-site Product Photos





Series Display
35kV–800kV
35kV–800kV
35kV–750kV
35kV–500kV
35kV–500kV
35kV–220kV
Series Display



Serving Global Customers
Our products are exported to more than 20 countries and regions, including Spain, India, Croatia, South Africa, Sweden, the United States, Brazil, Mexico, Argentina, Italy, Colombia and Ukraine. Over two decades of development, our international reach has continued to grow.
Corporate Clients
Huagao has established close strategic partnerships with leading electrical companies in China and abroad, including Hitachi Energy, GE, Siemens, China Electrical Equipment Group, TBEA, Sieyuan Electric, Taikai Group, Arteche, XD Group, Chint Electric, CG Power, Nanjing Electric and many others.
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State Grid Supplier Qualification

Assembly Examples

Resists cracking during sudden temperature changes for high and ultra-high voltage conditions

Non-combustible inorganic material that helps prevent fire spread during line faults

A stable porcelain structure with excellent bending and torsional strength

Suited to coastal, chemical and heavy-industrial areas to reduce pollution flashover risk

High power-frequency and lightning-impulse voltage withstand capability

Weather and ageing resistant for long service life without outdoor cracking or powdering