# Opening & Wire Diameter Notes

![Woven wire mesh showing clear opening and wire diameter](https://qymetaltech.com/wp-content/uploads/qymt-img-20261017/qymt-woven-wire-mesh-06.webp) 





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Wire Mesh Resource

Confirm clear opening, center-to-center pitch, wire diameter, coating thickness and tolerance before requesting wire mesh pricing.



 Clear opening Center pitch Wire diameter Mesh count 

 

 

## Opening details to send

- Clear opening or center-to-center pitch
- Wire diameter before or after coating
- Roll width, panel size and tolerance
- Material, coating and application
 
 

 

 

 







RFQ Preparation

## Avoid confusion between opening size, pitch and wire diameter.

Wire mesh RFQs slow down when buyers only send a mesh count or a photo. This page separates clear opening, center-to-center pitch, wire diameter, tolerance and coating so the factory can quote the correct mesh.



 [Send Mesh Details for Review](https://qymetaltech.com/contact/) [Download Opening Checklist PDF (PDF · English · 3 KB)](https://qymetaltech.com/wp-content/uploads/2026/05/QY-Metal-Tech-Wire-Mesh-Opening-Wire-Diameter-Checklist.pdf) [Back to Specification Guide](https://qymetaltech.com/resources/wire-mesh-specification-guide/) 

 

 

### Fast quotation package

- Opening size and measurement method
- Wire diameter and material grade
- Roll or panel dimensions and quantity
- Coating, edge treatment and packing
 
 

 



 **Use the right Wire Mesh resource page** Start with [Specification Guide](https://qymetaltech.com/resources/wire-mesh-specification-guide/) for general RFQ structure, then use this page for aperture, pitch, wire diameter and tolerance details. 

 

## Opening terms buyers should separate



 

 **Inside gap**### Clear opening

Inside-to-inside space between wires. This is often the most practical dimension for drainage, screening or protection openings.



Example: 50 x 50 mm clear opening

 

 

 **Center distance**### Center-to-center pitch

Distance from one wire centerline to the next wire centerline. It includes the wire diameter.



Example: 55 mm pitch with 5 mm wire gives about 50 mm opening

 

 

 **Per inch**### Mesh count

Used more often for fine woven mesh. It means the number of openings or wires per inch, depending on local wording.



Example: 10 mesh needs wire diameter too

 

 

 **Core or coated**### Wire diameter

Confirm whether diameter is before coating, after coating or a nominal wire gauge. Coating can change the finished opening.



Example: 4.0 mm core wire, 5.0 mm after PVC coating

 

 

 

 

## Common opening and wire diameter reference



 

| Product type | Common RFQ range | Details to confirm | Related page |
|---|---|---|---|
| Welded wire mesh panels | Wire 3-6 mm; openings such as 50 x 50 mm, 50 x 100 mm, 75 x 75 mm or project drawing. | Clear opening vs pitch, panel size, edge wire, galvanizing or powder coating. | [Welded & Woven Mesh Guide](https://qymetaltech.com/resources/welded-woven-mesh-guide/) |
| Woven wire mesh rolls | Fine mesh count, aperture in mm, or wire diameter from about 0.5-3 mm depending on use. | Mesh count definition, roll width, weave style, stainless or galvanized material. | [Woven Wire Mesh](https://qymetaltech.com/woven-wire-mesh/) |
| Fence or guard mesh | Wire 4-8 mm; rectangular or square opening by project layout and security requirement. | Panel tolerance, post spacing, coating color, clips and gate compatibility. | [Welded Mesh Fence](https://qymetaltech.com/welded-mesh-fence/) |
| Expanded or perforated sheet | Use SWD/LWD/strand for expanded metal, or hole diameter/pitch/open area for perforated sheet. | Do not describe sheet products only as wire mesh; send pattern, sheet thickness and sheet size. | [Expanded & Perforated Notes](https://qymetaltech.com/resources/expanded-perforated-sheet-notes/) |

 

 

 

## Better RFQ wording examples



 

### Welded panel example

Welded wire mesh panel, 50 x 50 mm clear opening, 4.0 mm wire after galvanizing, panel 1000 x 2000 mm, hot-dip galvanized, 500 pcs.

 

 

### Woven roll example

Woven wire mesh roll, 10 mesh, 0.5 mm stainless steel wire, roll width 1.2 m, roll length 30 m, plain weave, 20 rolls.

 

 

### Coated mesh example

PVC coated mesh, 4.0 mm core wire and 5.0 mm finished diameter, 50 x 100 mm pitch, green coating, panels with edge wire.

 

 

 

 

## Checklist cards for mesh opening RFQs



 

### Aperture

- Clear opening or pitch
- Square, rectangular or diamond
- Opening direction if required
 
 

 

### Wire

- Diameter or wire gauge
- Before or after coating
- Material and tensile need
 
 

 

### Format

- Roll, sheet or panel
- Width, length and tolerance
- Edge wire or framed edge
 
 

 

 

 

## Common missing details



- Only mesh count is sent, but wire diameter is not confirmed.
- Opening size is listed without saying clear opening or pitch.
- Coating is selected, but before or after coating diameter is unclear.
- Panel dimensions are given without cutting tolerance.
- Roll width is missing, causing freight and packing uncertainty.
- Application is not stated, so stiffness and finish cannot be reviewed.
 
 

 

 

## Opening and wire diameter examples



 

 ![Woven wire mesh aperture and wire diameter example](https://qymetaltech.com/wp-content/uploads/qymt-img-20261017/qymt-woven-wire-mesh-01.webp) 

Woven mesh RFQs should define opening size, wire diameter and roll format.

 

 

 ![Welded wire mesh panel opening pitch example](https://qymetaltech.com/wp-content/uploads/2026/05/qymt-welded-wire-mesh-gallery-01-300x300.jpg) 

Welded mesh panels need pitch, wire diameter, edge and coating confirmation.

 

 

 ![Perforated sheet hole pattern and pitch example](https://qymetaltech.com/wp-content/uploads/2026/05/qymt-perforated-metal-sheet-gallery-02-300x199.webp) 

Sheet products require hole size, pitch, open area and thickness notes.

 

 

 

 

## Related resource and product pages



 [**Wire Mesh Specification Guide**General RFQ structure for mesh products.](https://qymetaltech.com/resources/wire-mesh-specification-guide/) [**Welded & Woven Mesh Guide**Choose welded or woven construction by use case.](https://qymetaltech.com/resources/welded-woven-mesh-guide/) [**Expanded & Perforated Notes**Use sheet-specific dimensions for expanded and perforated products.](https://qymetaltech.com/resources/expanded-perforated-sheet-notes/) [**Wire Mesh Products**View welded, woven, expanded and perforated product pages.](https://qymetaltech.com/wire-mesh/) 

 

 



## Need help checking opening and diameter wording?

Send a drawing, sample photo or rough specification. QY Metal Tech can help confirm whether the RFQ should use clear opening, pitch, mesh count or sheet pattern terminology.

 



 [Send Details for Review](https://qymetaltech.com/contact/)

Source: https://qymetaltech.com/resources/wire-mesh-opening-wire-diameter-notes/