Every steel delivery in Hyderabad has some rust on it, and every site argues about whether it matters. The answer depends on what kind of rust it is.
Which Rust Is Acceptable?
| Condition | Acceptable? | Action |
|---|---|---|
| Thin, even orange film | Yes | None; it does not reduce bond |
| Rust that rubs off on a cloth | Yes | None, or a light brush |
| Loose, flaking scale | No | Wire brush before placing |
| Pitting — small craters in the surface | Only if light | Brush, then weigh a sample |
| Rust that has thinned the bar or dulled the ribs | No | Reject |
| Oil, grease or paint on bars | No | Clean off |
Rust that has eaten into the bar reduces its area and strength. The weight chart is the quickest check: a 12 m, 12 mm rod should be about 10.66 kg.
How Should Steel Be Stored?
- Off the ground. On timber sleepers or concrete blocks at least 150 mm high, so bars do not sit in mud or water.
- Sorted by diameter, with tags kept, so the right size goes in the right member.
- Covered. A waterproof sheet over the stack, especially from June to September.
- Drained. On a high, well-drained part of the plot.
- Away from cement and chemicals that can spill on it.
Order by Stage
Steel delivered for the whole house at once sits for months, through at least one monsoon. Ordering per stage — foundations, then each floor — keeps storage short and lets you check each lot. It also keeps your options open on price for later stages.
Before the Concrete Goes In
- Brush off loose rust and any mud.
- Remove oil, grease or form release agent from the bars.
- Make sure cover blocks are in place so the steel is fully encased.
The Short Version
Light rust is fine; flaking, pitting and thinning are not. Store steel high, dry and sorted, buy it by stage, and brush off loose rust before the concrete goes in.
