Criterion R300SL Reinforcing Mesh
Full Description
R300SL Reinforcing Mesh
Standard: AS/NZS 4671:2019 — Steel reinforcing materials Designation: R300SL Product Form: Welded steel mesh (fabric)
Product Description
R300SL is a round welded steel mesh with a specified lower characteristic yield stress of 300 MPa, Square bar configuration, and Low ductility class.
| Designation Component | Code | Meaning |
|---|---|---|
| Profile | R | Round |
| Strength Grade | 300 | 300 MPa |
| Configuration | S | Square |
| Ductility Class | L | Low |
Orthogonal bars in a square configuration.
Size and Spacing
Unlike bar and coil, mesh designations include bar size and spacing as suffixes — e.g. R300SL92 means 9 mm bar diameter, 200 mm spacing. However, ACRS certifies at the grade level (R300SL): the specific sizes and spacings a firm is certified for are listed on the ACRS certificate and recorded in LTQ data.
Certification Scope
ACRS certification for R300SL mesh confirms that the certified firm's fabrication meets the requirements of AS/NZS 4671:2019 for this grade, including mechanical properties of the parent wire/bar, weld shear strength, dimensional tolerances, and marking requirements.
Applicable Clauses (AS/NZS 4671:2019)
| Clause | Subject |
|---|---|
| §5.4 | Designation of welded mesh |
| §7 | Mechanical properties |
| §8 | Dimensional properties |
| §9 | Weld shear force |
| §10 | Marking |
Certificate Types
| Certificate | Stage | Description |
|---|---|---|
| Non-Producer Certificate | Stage 2 — Fabricating | Firms fabricating R300SL mesh from certified reinforcing materials made by a Producer |
Profiles using this criterion
ACRS Product Certification
- Concrete Reinforcing Steels | 1.0.0
Conformity Alignment
Certified
Pass Yes
Definition "All AS/NZS 4671 requirements met for R300SL grade"
Non Producer
Pass No
Definition "Non-Producer Certificate active; requirements met for processing/fabricating"
Voluntary Relinquishment
Pass No
Definition "Certificate voluntarily relinquished by the firm"
Site Closed
Pass No
Definition "Certified site permanently closed; certificate no longer valid"
Terminated Non Compliance
Pass No
Definition "Certificate terminated by ACRS due to non-compliance"
Change Log
1.0.0 (2026-04-09)
Initial release.