Laminated Sheets: G5/G9, G10/FR-4, GPO-3, Phenolic, SMC and Vulcanized Fiber

Cut, punched and machined insulating plates for panels, barriers and structural parts.

💾 Product Catalog

Download the PDF datasheet for this product family.

Download PDF

Products in this family

GPO-3 Polyester Glass Sheet

Track-resistant, V-0 sheet for busbar supports and barriers.

G5/G9 Glass Melamine Sheet

High-strength, arc-resistant sheet for switchgear parts.

Phenolic Cotton Laminated Sheets

Machinable phenolic plate for mechanical insulating parts.

Phenolic Cotton Cloth Laminated Sheet (3230)

General industrial phenolic plate for mechanical and electrical parts.

Bakelite Plate (Orange / Black)

Paper-phenolic plate for panels, tags and mechanical parts.

SMC Sheet Molding Compound

Moldable sheet compound for large insulated enclosures and parts.

Vulcanized Fiber (Fish Paper) Sheet

Fish-paper sheet for arc-facing and formed insulation parts.

Technical resources

Common questions

Can you punch holes without burrs?

Yes. Punched holes are produced burr-free on melamine, epoxy glass and phenolic plates up to the tooled thickness. For thicker or tight-tolerance holes we CNC machine instead of punch.

G10/FR-4 or GPO-3 sheet for a busbar support?

GPO-3 is the standard for busbar supports and barriers because of its track resistance and V-0 flame class. G10/FR-4 is chosen when you also need higher mechanical and moisture performance.

What tolerance can you hold on vulcanized fiber tubes?

On thin-wall vulcanized fiber sections we typically hold ±0.05 mm on ID and OD. Knurl pitch, major/minor diameter and position are reviewed per drawing. Capability is confirmed against your print, not published as a blanket claim.

Is vulcanized fiber suitable for arc-facing fuse applications?

No. For arc-facing surfaces, use ceramic-filled epoxy glass, melamine or synthetic arc-quenching composites. Vulcanized fiber is for non-arc-facing mechanical bodies and end caps.

Can you supply COA and batch traceability?

Every batch is traceable to the incoming material certificate. Material COA, first-article inspection (FAI), in-process checks and final inspection reports are supplied per your plan on request.

Quote Laminated Sheets: G5/G9, G10/FR-4, GPO-3, Phenolic, SMC and Vulcanized Fiber 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.

Laminated Sheets: G5/G9, G10/FR-4, GPO-3, Phenolic, SMC and Vulcanized Fiber Chat on WhatsApp