How Electric Porcelain Is Made in Shangbu
The production sequence that has run in Shangbu Town, Luxi County, for generations, from raw material store to finished insulator.
From Raw Material to Mud
Shangbu Town in Luxi County was home to the former state-owned Pingxiang Electric Porcelain Factory, and its process is the one the district still works to. Raw materials are held in open sheds, crushed in the raw material workshop, then mixed into mud. The mud is wrapped in filter cloth and pressed to force out the water.
Forming the Blank
Workers remove the dried mud and take the porcelain clay bar from the machine, then deliver the clay to the billet making position. Workshop hands cut the clay into blanks. It is physical work, and the blank stage is where the dimensional consistency of the finished unit is established.
Why the District Matters
Luxi electroceramics was recognised at the Jiangxi Luxi Electroceramics Achievements and Cooperation Exhibition of China, held in Beijing on 17 November 2018 to mark the 40th anniversary of Reform and Opening Up. Zhaotong manufactures in Xitang, Pingli, Shangbu, in the middle of that production district.
Related Questions
Does Zhaotong produce in Shangbu?
Yes. The works are at Xitang, Pingli, Shangbu, Luxi, Pingxiang, Jiangxi, in the electroceramics district described above.
What is the annual production capacity?
Porcelain insulator capacity is 10,000 tons per year.
Designs Referenced Above

Clevis Type Suspension Insulators ANSI 52-4
ANSI 52-4 Clevis and Pin Porcelain Disc Rated 67 kN
View specifications
Pin Type Insulators ANSI 55-5
ANSI 55-5 Pin Type Insulator for 15 kV Distribution
View specificationsRelated Categories
Other Guides
- What the Black RF Glaze on an Insulator Actually Does
- Which Defects Are Acceptable in a Porcelain Insulator
- How Insulator Glaze Colour Is Determined
- How to Dispose of Porcelain Insulators Removed From Service
- Glass or Porcelain Suspension Insulators
- Choosing a Shed Profile for Contaminated Sites
- Reading an Insulator Datasheet Before You Order
Questions This Guide Did Not Answer
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