Umbrella metal part
Parasol Rib
Overview
- Made by
- Supply chain / partners
- Materials
- Steel U-channel or flat rib, Aluminium profile rib, Fibreglass (FRP) rib for beach and coastal use
- Finish options
- Powder coat, Anodised aluminium, Natural FRP with UV-stable gelcoat
Selection tips
- Steel flat rib is cheap and stiff but rusts; aluminium is light and rust-free but takes a set; FRP handles wind best.
- Rib length has to match the canopy radius including the curve height, or the canopy sags between ribs.
- For coastal and beach use specify FRP or aluminium with stainless rivets: rust from a steel rib stains the canopy.
- Run a deflection check before shipment; it catches thin-wall substitution faster than a visual inspection.
Manufacturing process & quality control points
- 1
Blanking and forming
Supply chain / partnersRib stock is blanked and formed. On a parasol the rib span is over a metre, so the section is chosen for stiffness under a loaded canopy rather than for weight.
Quality control points
- Length and section · Caliper / profile gauge per drawing · First article + 1 pc per 2 h
- 2
Rivet hole punching and end forming
Supply chain / partnersHub and stretcher holes are punched, and the outer end is formed to take the canopy pocket or tip.
Quality control points
- Hole pitch and burr · Fixture check, no burr at the hole edge · First article + 1 pc per 2 h
- 3
Surface finishing
Supply chain / partnersCoating or anodising is done by the supply chain. The underside of a parasol rib never dries in the shade, so this is where coating failure starts.
Quality control points
- Coating thickness · Thickness gauge per buyer spec · Per batch
- Corrosion resistance · Neutral salt spray, 5% NaCl, 35 C (ISO 9227 / GB/T 10125) · Per batch
- 4
Stiffness and deflection check
Supply chain / partnersRibs are loaded at the tip and deflection is measured. A rib that springs back is fine; one that takes a permanent set will sag in the canopy within a season.
Quality control points
- Tip deflection and set · Load to agreed value at the tip, measure residual deflection · Per batch
Used in
Relevant compliance
- EU REACH (SVHC)
EU
All metal & plastic parts, electroplated components and fabric coatings
- California Proposition 65
US
All products sold into California containing listed chemicals
Get a quote for Parasol Rib
Custom materials, finishes and logos available. Send your drawing or sample.