FRP epoxy square rod for transformer

Insulation Bar, also called FRP epoxy square rod for transformer mainly used for the transformer as the supporting insulation bar,which have good performance of the electrical and mechanical property.

1. Material: Fiberglass and epoxy resin.

2. Process: Continuous pultrusion.

We can produce any kind of insulation rod according to customer’s requirement.

Pultrusion is a continuous process using fibre reinforcements with thermosetting resin matrices. Pre-selected reinforcement materials, such as fibreglass roving, mat, woven fabrics or stitched fabric, are drawn through a resin bath in which all material is thorougly impregnated with a liquid thermosetting resin. Typical resins include polyesters, vinyl esters and phenolics. The wet-out fibre is formed to the desired geometric shape and pulled into a heated steel die. Once inside the die, the resin cure is initiated by controlling precise elevated temperature. The laminate solidifies in the exact cavity shape of the die, as it is continuously pulled by the pultrusion machine. Most any constant cross-section part can be pultruded. 


pultruded square tube is  the most versatile profiles. They come into use in many different locations: FRP stairways, sewage plants, walkways, GRP platforms and as supports of all kinds.

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