Wire mesh resource
Expanded & Perforated Sheet Notes
Clarify expanded metal and perforated sheet details: strand size, SWD/LWD, hole pattern, pitch, open area, thickness and sheet format.
RFQ preparation
Separate expanded metal notes from perforated sheet notes
Expanded metal and perforated sheet both look like sheet mesh, but their production methods and drawing details are different. This page helps buyers confirm the right dimensions before sending RFQs.
Use the right Wire Mesh resource page Start with Specification Guide for general RFQ structure, then use this page for the more specific notes shown below.
Expanded vs perforated sheet review matrix
| RFQ item | Details to confirm | Why it matters |
|---|---|---|
| Expanded metal mesh | SWD, LWD, strand width, strand thickness, raised or flattened type and opening direction. | Controls sheet stiffness, appearance, walking feel, weight and installation orientation. |
| Perforated metal sheet | Hole shape, hole diameter, pitch, staggered or straight pattern, open area and margin. | Affects ventilation, filtration, screening, light transmission and visual uniformity. |
| Sheet format | Sheet thickness, width, length, flatness, cut-to-size tolerance and edge treatment. | Prevents mismatch with frames, panels, guards, facades and machine covers. |
| Finish and packing | Galvanized, powder coated, painted, stainless, protective film, pallet size and bundle labels. | Protects surface appearance and helps site sorting for multiple sheet sizes. |
Checklist cards for sheet mesh quotation
Expanded metal
- SWD and LWD
- Strand width / thickness
- Raised or flattened type
Perforated sheet
- Hole shape and diameter
- Pitch and open area
- Margins and blank edges
Sheet details
- Thickness and sheet size
- Flatness and tolerance
- Cutout and edge treatment
Finish
- Carbon steel, galvanized or stainless
- Powder coat color
- Protective film or pallets
Common sheet mesh RFQ gaps
- Expanded metal opening direction is not marked on the drawing.
- Raised or flattened expanded metal type is missing.
- Perforated sheet open area is requested, but pitch is not confirmed.
- Blank margin and edge treatment are not shown.
- Sheet flatness and tolerance are not defined.
- Surface finish and protective film requirements are missing.
Expanded and perforated sheet references
