Reliable insulation for power transmission & distribution.
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IEC 62217 & ISO 9001 certified factory with in-house toughening lines
Vertically integrated — glass melting, tempering and galvanized hardware under one roof
100+ trained technicians ensuring consistent insulator quality
In-house QC & QA team for 100% routine testing on every batch
Over 15 years focused on overhead-line glass insulators and fittings
High-Voltage. Heavy-Duty. Reliable
Toughened cap & pin disc insulators for overhead high-voltage lines. Available from 70 kN (U70BP) standard discs to 100 kN (U100BLP) bell-type anti-fog units for polluted and coastal areas.
Compact. Quick-Install. Proven
Pin-type glass insulators for distribution lines, taps and low-voltage networks. Mounted on a steel pin, they install quickly with no suspension string — for example the 20 kV P-20T.
Solid-Core. High-Strength. Station-Grade
Solid-core post insulators for substations, bus supports and switchgear — such as the 35 kV outdoor ZSW-35/400. Designed for high cantilever strength and reliable insulation in demanding environments.
From transmission tower supply to substation retrofits, insulglass delivers qualified toughened glass insulators and coupling hardware on time and on spec.
About insulglass
Most of our production is in-house — glass melting, toughening and assembly under one factory. We integrate shell toughening, metalware galvanizing and string assembly into a single flow, so custom mechanical and pollution-class ratings are built to your specification, with engineers supporting you from specification through type test and delivery.
From pre-sales specification through type testing and after-sales support, our team delivers complete solutions for your overhead-line glass insulator needs.
In-house toughening and assembly lines produce over a million insulator units a year.
We secure raw glass, metalware and fittings from qualified suppliers for consistent quality.
A strong engineering team handles shed profile, creepage and string design.
Sample insulators and type-test specimens produced quickly to validate your design.
An in-house QC & QA team 100% routine-tests every batch before dispatch.
Dedicated support keeps your line projects running smoothly after delivery.
Our facility combines advanced glass-melting and tempering technology with skilled craftsmanship. From automated assembly lines to rigorous quality control, every step ensures reliable insulator performance.
We welcome partners and clients to visit our manufacturing facility. See our toughening and assembly capabilities firsthand and discuss your custom insulator requirements with our engineering team.
Many of our clients switched to type-tested toughened glass insulators and cut line failures significantly. Let us show you the difference certified materials and in-house tempering make.