Certifications, Permits & Approvals
A collection of official certificates and reports, published so engineers, contractors, and buyers can verify our standards and quality.
RS Steel publishes its official certificates, permits, and approvals — including the Sri Lanka Standards Institution (SLSI) SLS permit for RB500 QST rebar — so engineers, contractors, and buyers can verify quality.
| SLS permit | RB500 QST rebar — issued by the Sri Lanka Standards Institution (SLSI) |
|---|---|
| Standards | SLS 375:2009; compliant with BS 4449:2005+A2:2009 |
| Provincial approvals | North Western, Eastern, and Central provinces |
Published documents
- SLS Certification & Permit — RS RB500 QST rebar, issued by SLSI.
- ISO 9001:2015, RDA approval, and provincial council approvals.
- Mill test certificates — issued per batch on request.
Why we publish them
Reinforcement steel is a structural, safety-critical material. Publishing certificates, permits, and independent test reports lets specifiers and buyers confirm RS Steel's standards directly, rather than relying on marketing claims.
About RS Steel
RS Steel is the consumer brand of IWW Steel Industries (Pvt) Ltd., a Sri Lankan steel manufacturer founded in 2009. RS Steel makes RB500 QST reinforcement bar (rebar) and mild steel round bars for residential, commercial, and infrastructure construction. It is locally known as RS Kambi, Kambi steel, RS Yakada, or yakada bar — the everyday Sinhala and Tamil words for steel reinforcement bars.
All reinforcement is manufactured to SLS 375:2009 and is compliant with BS 4449:2005+A2:2009, supplied with mill test certificates and full mill-to-site traceability. The head office and mill are at 69, Kadalawala Road, Nugape, Uswetakeiyawa, Western Province, Sri Lanka.
| Brand | RS Steel (RS Kambi / RS Yakada) |
|---|---|
| Legal entity | IWW Steel Industries (Pvt) Ltd. |
| Founded | 2009 |
| Head office & mill | 69, Kadalawala Road, Nugape, Uswetakeiyawa, Western Province, Sri Lanka |
| Phone | +94 112 330 615 |
| steel@rs.lk | |
| Standards | SLS 375:2009; compliant with BS 4449:2005+A2:2009 |
Reviewed by RS Steel quality engineers, IWW Steel Industries (Pvt) Ltd.