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FRP electric insulators are widely used in electrical insulation, electrical, machinery, civil transportation, and many other industries.

FRP electric insulators / composite insulators are composed of three parts: insulating mandrel, silicone rubber sheath, and connecting fittings at both ends using SMC / BMC processing.

FRP electric insulators can be divided into rod-shaped suspension composite insulators, pin-type composite insulators, cross-arm composite insulators, pillar composite insulators, wind-deflection composite insulators, etc.

Not easy to be eroded, small in size and light in weight, not afraid of collision, easy to install and maintain.

The fiberglass electric box is made of SMC material, waterproof and dustproof, corrosion-resistant, high-strength insulation, UV-resistant, wear-resistant, beautiful and generous, and can be used in seaside, tropical and cold regions.

The connection between the cabinet and the door is made of stainless steel hinges, with an opening and closing degree of more than 180 degrees, which is convenient for wiring and installation.

Products are used in: subway high-speed rail, steel smelting, petrochemical industry, tunnel garage, underground supermarket, home outdoor, airport, mine, port terminal, vehicle and ship industry, refrigerated container, large stadium and various natural disaster prevention, electrical control equipment, etc. fields and places.

Electric Insulators & Electrical Box: SMC/BMC

Compression molding is the most common choice for high-volume composite parts and is often associated with SMC (sheet molding composite) and BMC (bulk molding composite) materials.

We supply various fiberglass products made from SMC and BMC materials: enclosures, insulators, boxes, nuts/bolts, seats/chairs, various parts for machinery and electrical, etc.


What are Sheet Molding Compounds (SMC)


Sheet molding compound (SMC) is a type of composite material made from a mixture of resin, glass fiber reinforcement, and various additives. It is typically used in the manufacturing of automotive parts and other complex-shaped components.

What are Bulk Molding Compounds (BMC)


Bulk molding compounds (BMC) are first processed by mixing resin, glass fiber reinforcement and additives together to form a dough-like mixture. This mixture is then placed in a mold and subjected to high pressure and temperature, allowing it to cure and form the shape of the mold. Once the material has cooled and solidified, it can be removed from the mold and used as a finished component. It is similar to sheet molding compound (SMC), but processed differently.


The main advantage of the SMC/BMC process is that it can produce the very complex shapes and large size profile by easy way and lower cost.

Different from pultruded profiles, when designing the SMC molded products, ?not only take the quality requirement and work under maximum load into account, but also make sure the structure meets the requirements according to the analysis of ?process and factors in the actual production.

Electric Insulators & Electrical Box: SMC/BMCElectric Insulators & Electrical Box: SMC/BMC

The technology processing

This process produces high strength, complex parts in a wide variety of sizes. Matched metal dies are mounted in a hydraulic molding press. The material charge is manually or robotically placed in the mold, heated mold halves are closed, and up to 2,000psi of pressure is applied. Cycle time ranges from 1-5 minutes depending on part size and thickness. Features such as ribs, bosses and inserts can be molded in.

Compression molded parts are characterized by net size and shape, two excellent finished surfaces and outstanding part-to-part repeatability. Trimming and finishing costs are minimal.