How to identify genuine steel
Genuine reinforcement steel is traceable from mill to site. Before fixing, verify documentation, physical markings, dimensions, and supplier identity — especially for RB500 QST bar where strength grade affects structural safety.
Frequently asked questions
What should I check first on delivery?
Bundle tags, bar markings, diameter, and the delivery note. Request the MTC if it was not attached. Full MTC guide: How to read mill test certificates.
Is light rust on rebar acceptable?
Light surface rust is often acceptable if bond and section are not compromised. Reject heavy flaking or deep pitting.
How do I verify RS Steel specifically?
Follow Verify genuine RS Steel — markings, ribs, tags, and MTC cross-check.
What if weights seem low?
Weigh sample bars and compare to standard kg/m for the diameter. Use our Steel weight calculator. Underweight bar is a red flag.
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.