Supplier's Category: All Filament Winding & Pultrusion: Continuous composite profile and pressure-vessel production
Filament winding and pultrusion produce continuous composite profiles and pressure vessels by winding or pulling fiber through resin in a fixed process — filament winding for rotationally symmetric shapes like tanks, pultrusion for constant-cross-section profiles like beams. Both are continuous, highly automatable processes rather than one-off layups.
These two processes serve distinct part geometries, so the right one depends entirely on shape.
- Filament winding: pressure vessels, tanks, pipes — anything rotationally wound around a mandrel
- Pultrusion: structural profiles, ladder rails, beams — constant cross-section, continuous length
- Both: fiberglass and carbon fiber reinforcement in a thermoset or thermoplastic resin
Related terms: filament winding, pultrusion, mandrel design, fiber tow tension control, resin bath formulation, continuous profile extraction, composite pressure vessel design, hoop and axial fiber orientation, thermoset resin curing
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Evaluating a filament winding or pultrusion supplier
Both processes depend on tight, repeatable process control across a long production run.
What to check
- Fiber tension and placement consistency across the length of a part, not just at the ends
- Pressure or burst testing capability for pressure-vessel applications
- Experience with your specific resin system (epoxy, vinyl ester, polyester)