In June 2023, MIDHANI had produced >2.5 m rings made out of "TiTaN-31" alloy. The TiTaN-31 alloy's formula was produced by DMRL & productionized by MIDHANI. MIDHANI says that these rings were made for space applications.
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By "space applications", they probably mean a satellite launch vehicle. This ring will probably be at the interstage of the launch vehicle & will house electronics, guidance, sensors & stage separation equipment.
Right now, India has 2 space launchers under development: NGLV & Veda. As we know now, the NGLV will have a uniform diameter of 5m. So, these rings were meant for Veda then.
We don't know much about the Veda. But we know that it will not have a uniform diameter. We also know that the Veda will get its stages from Indian ICBMs/SLBMs.
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The largest of our ICBMs/SLBMs so far have a diameter ~2m. So, this 2.5m ring must be for a new stage of an upcoming ICBM or SLBM. So either A6 or K5.
In June/July 2024, ASL had released a tender for the fabrication of rubber seals & end support rings for A5, A1P & K5 missiles. Thanks
@marich01 for this:
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Notice the nomenclature "K5S1C". This probably means K5 missile-Stage 1-CRMC type solid stage. Here the inter diameter is shown as 2418mm or 2.418 m. This is the outer diameter of the CRMC. Therefore a 2.5 m interstage ring on this stage is very plausible.
@marich01 hypothesized some months ago that Veda is probably K5's 1st stage mated with A5's or K4's 2nd stage. I think he is right.
