G10 / G11 Epoxy Fiberglass Tubes and Filament-Wound Tubing

Wound and pultruded epoxy glass tubes for insulation, structural and high-voltage casing parts.

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Products in this family

Filament-Wound Epoxy Tubing

Wound to a fiber angle set by your load path, then machined to shape.

Filament Fiberglass Wound Tubing

Standard and custom-wound fiberglass tubing for insulation and structure.

Shaped HV Casing Parts (FR-4/G10)

Machined casing, bushing and insulator shapes from wound epoxy glass.

PV Insert Epoxy Fiberglass Tubes

Insulator inserts for PV and busbar terminal assemblies.

Current-Limiting Fuse Tubes

Bodies for current-limiting links, built to the clearing spec.

Filament-Wound Rocket Tubes

Composite motor-case tubing wound to pressure and thrust load.

Fiber Sanding Discs (Fiber Backing)

Vulcanized-fiber backing discs for bonded abrasive wheels.

Technical resources

Common questions

What is the difference between G10 and FR-4?

FR-4 is G10 with a flame-retardant brominated epoxy (UL 94 V-0). Mechanically and electrically they are close; FR-4 is specified when the part must self-extinguish. We stock both and machine to either grade.

Can you wind to a specific fiber angle?

Yes. Filament winding lets us set the glass angle to match hoop, axial or combined loading. Tell us the pressure or column load and we will propose the winding schedule.

Can epoxy glass be machined to tight tolerances?

Yes. We hold ±0.05 mm on ID/OD with CNC turning and grinding using diamond-coated tools to avoid delamination.

Is epoxy glass arc-resistant?

It has good arc resistance but is not arc-quenching. For direct arc contact, pair with ceramic-filled or synthetic arc-quenching composites.

What certifications do you provide?

Material COA, batch traceability, first-article and final inspection per your plan. Certificates comply with RoHS and REACH on request.

Quote G10 / G11 Epoxy Fiberglass Tubes and Filament-Wound Tubing from WELLELE

Send the drawing with your requirements — material grade, dimensions, tolerance and annual quantity. We match the grade and respond with manufacturability notes and quotation.

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