How a small foundry gets listed with larger OEMs and their vendor development teams

The large OEM in your district buys castings like yours from three foundries, and none of them is you. The way in is usually its vendor development team, and only when that team needs a new source.

The engineer then sends a supplier survey, visits your floor, hands you a development casting and approves a trial lot before any schedule arrives. A small foundry with its answers, records and comparable castings ready for each stage moves faster than one that starts preparing when the call comes.

When a vendor development team goes looking

A team adds a foundry for a reason. That reason decides what you should show. A part being localised from an import needs proof you can work to an unfamiliar drawing and test plan. An incumbent foundry that keeps failing makes your rejection record and delivery history the first things asked for. A new model with new castings puts your pattern shop and development speed under the light. A cost drive? Then they study your yield and price structure.

The timing rule follows from this. Vendor development teams add sources when a project needs them, not when a brochure arrives. Your job is to be known to the engineer before the project starts.

Getting in front of the engineer before the project

Engineers find foundries the way everyone in a cluster finds anything: through people. An engineer at one of your customers moves to the OEM and remembers you. A machining vendor of the OEM needs castings and names you. Supplier meets and your foundry association's events put you in the same room. And when the engineer searches for "SG iron castings up to 40 kg", a page that says exactly that puts you on the engineer's list.

Send the engineer a capability sheet, not a brochure. It should state the metals and grades you pour, the weight range per casting, the moulding method and the melting equipment. Add core making, what you test in-house, fettling, shot blasting, any machining, and your free capacity. Give your free capacity, not your total, because the engineer will compare it with what the floor shows.

The sheet and a short capability presentation can then travel together.

The stages, and where each one stalls

1. Supplier survey. A form on capacity, equipment, quality system, customers and finances. It stalls when the answers describe the foundry you plan to become. For a foundry, the tell is the spectrometer line: say whether it is yours or a lab's, and name the lab.
2. Capability visit. The engineer, sometimes with someone from quality, walks melting, moulding, sand control, the pattern shop, testing and fettling, and asks for records. It stalls when chemistry per heat, the sand test log and pouring temperatures are not written down, however good the castings look.
3. Development RFQ. A drawing, a quantity, sometimes a target price. It stalls when the foundry prices without asking about machining allowance, pattern ownership, the grade's test bars and the radiography the first lot needs.
4. Pattern and samples. First castings poured, layout inspection done, chemistry and microstructure reports attached, radiography if the part calls for it. Samples that slip without warning, or arrive without reports, stop the file here. A first sample casting covers what to put in that box.
5. Trial lot. The OEM machines your castings on its own line or at its machining vendor. Porosity, sand inclusions or hard spots under the tool end the trial.
6. Vendor code and first schedule. Registration papers, a vendor code and small first releases. The trap is treating the code as the finish line. First schedules are small on purpose, and they grow with your rejection and delivery record.

The registration papers themselves are covered in the vendor folder to keep ready, so they are left out here.

For example: an Agra foundry and a generator maker

Imagine a grey iron foundry in the Nunhai industrial area of Agra, pouring housings and covers for local engine assemblers. A vendor development engineer from a generator maker in the NCR hears of it through one of those assemblers. The details are illustrative.

The owner filled in the survey in an afternoon, gave the furnace's full capacity rather than what was free, ticked "spectrometer: yes" for a machine at a testing lab in town, and attached the company brochure. At the visit, the engineer asked for heat-wise chemistry and the sand test log. Neither existed on paper, and the file stopped at the second stage.

The owner rewrote the survey with free capacity and a plain line on what was tested in-house and what went to the outside lab, naming the lab. The foundry began writing down the chemistry of every heat and the sand properties of every shift. After two months of records the owner asked for a second visit. This time the engineer moved the file on and sent a drawing, for a small cover rather than the housing the foundry wanted. The owner took it and treated it as the real test.

What not to promise, and when to walk away

Never tick a certificate you are still working towards. Write the target date instead, and let the engineer decide.

A development part beyond your weight range or alloy is not a shortcut to a vendor code. A failed sample stays in the file long after the engineer has forgotten why you took it.

Before the trial lot, decide how much furnace time one OEM may take. And if a file stalls at the visit twice, fix the floor, not the presentation.

Development is slow, and a foundry that waits until a customer leaves has nothing coming through. Public sector buyers work differently, through their own portals and tenders; see RFP and tender management. The rest of the foundry's selling job is on the casting and foundry page.

Answer the survey before anyone sends it

Write your own answers to a typical supplier survey today: free capacity, what you test in-house, your weight range and your three best comparable castings. Wherever the honest answer embarrasses you, that is the work to do before you ask any OEM for a visit. If you want the capability sheet and survey answers prepared with a corporate profile, tell us what you need.