Umbrella metal part
Straight Stick Umbrella Rib
Overview
- Made by
- Supply chain / partners
- Materials
- Carbon steel strip (U-channel), Aluminium, Fibreglass (FRP)
- Finish options
- Black electrophoresis, Zinc / nickel plating, Powder coating
Manufacturing process & quality control points
- 1
Blanking & straightening
Supply chain / partnersSingle-piece rib blanks are cut from U-channel steel strip or formed from strip, then straightened.
Quality control points
- Blank length · Caliper / limit gauge · First article + 1 pc per 2 h
- 2
Profile forming
Supply chain / partnersRib is pressed to its U-channel profile and camber in a dedicated die.
Quality control points
- Profile & camber · Template against master sample · First article + hourly
- 3
Rivet hole punching & end forming
Supply chain / partnersHoles for notch, stretcher and tip are punched in one stroke to keep pitch consistent.
Quality control points
- Hole pitch · Go / no-go gauge · First article + hourly
- 4
Surface finishing
Supply chain / partnersE-coat, plating or powder coating before frame assembly.
Quality control points
- Coating thickness · Thickness gauge per drawing · 5 pcs per batch
- Corrosion resistance · Neutral salt spray 2 h for parts other than shaft (GB/T 23147-2018 reference) · Per order
- 5
Rib elasticity check
Supply chain / partnersElasticity is checked on stick ribs: bend the rib so the chord shortens by 20%, release, and measure residual camber (reference: not more than 10 mm per GB/T 23147-2018).
Quality control points
- Elastic recovery · Bend to 80% chord length, release, measure chord height · 1 pc per batch
- Bend strength · Static load at rib tip, no permanent deformation · 1 pc 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 Straight Stick Umbrella Rib
Custom materials, finishes and logos available. Send your drawing or sample.