OEM-locked GeM lots vs open-model PHE RFQs: a checklist for Indian plant buyers

Two late-October GeM signals from Indian heavy industry show the same split every spare-parts planner eventually hits. One lot is locked to the original equipment maker or its designated OES. The other names a model and leaves the door open to any supplier who can prove fit and compound. Knowing which kind of RFQ you are writing — and which kind you are reading — saves weeks of dead bidding.

What an OEM/OES lock actually means

Steel Authority of India’s Bhilai Steel Plant (SMS-III) published a GeM buy for proprietary heat-exchanger plates and gaskets (GEM/2026/B/8119149; corrigendum extended the deadline into early November). Aggregator notices make the participation rule plain: only the named OEM or its OES, with back-up quality guarantees, may bid. That is a legitimate installed-base strategy when a plant wants one contractual throat to choke. It is also a closed door for every independent plate press.

Do not treat that lot as a sales target. Use it as evidence that Indian steel SMS cooling fleets still burn through plates and gaskets at volume — and as a reminder to write your own spare RFQs differently if you want competition.

The open-model contrast: AK-20 at DVC Mejia

Damodar Valley Corporation’s Mejia Thermal Power Station is buying 944 channel-plate gaskets plus gasket cement for PHE model AK-20 (GEM/2026/B/8161128), with bids due around 5 November 2026. The model string is on the face of the tender. That is the shape buyers should prefer when second-source stock or price pressure matters.

Public summaries: Bhilai plate/gasket lot and Mejia AK-20 gaskets.

Checklist before you lock a GeM (or private) RFQ

1. Name the model, not only an OEM part number. AK-20-style strings travel across suppliers; proprietary PN-only lots often do not.
2. Photograph the nameplate and one channel plate (both faces) before the pack comes apart. Stamp thickness and material beat guesswork.
3. State compound and fixing. NBR, EPDM, FKM/Viton; clip-on, slit-in, or glued. Cement as a separate line item if your craft fits gaskets on site.
4. Separate OEM/OES-locked lots from open-model lots in the bid documents so evaluators do not mix scoring rules.
5. Ask for dimensional interchangeability in the existing frame, material certificates, and first-article photos — not a promise to “match the OEM PN.”
6. Add a non-affiliation / compatible disclaimer so legal and stores stay aligned.

Independent suppliers can still help on open-model work: quote the pack, ship trial plates, and stock critical compounds before the next outage. ShineHeat’s buyer notes for pre-selection live here: pre-selection. If your next GeM draft still reads like a proprietary PN dump, rewrite it as a model-and-compound RFQ before you hit publish.