Rajkot and Ahmedabad both have a wide spread of foundries, from small grey iron shops to SG iron, steel and investment casting units. Most grew up to supply local pump, engine, valve and machine tool makers, and many now export directly.
There is no single type of Gujarat foundry. What matters to you is which kind of shop fits your part, and how to tell them apart before you ask for a quote.
The main types you will meet
Foundries in the region usually fall into a few groups. Many do more than one of these, but each tends to have a core strength:
- Grey iron jobbing foundries pour flake graphite iron for pump bodies, motor frames, pulleys and machine bases, often with hand or floor moulding.
- SG iron foundries add magnesium treatment and tighter process control to make ductile iron for valves, gear blanks, hubs and pressure parts.
- Steel foundries melt carbon, alloy and stainless steel for valve bodies, impellers and wear parts, which need higher temperatures and more feeding metal.
- Investment casting units use the lost wax process for small, detailed steel and stainless parts with good surface finish.
- Automated moulding foundries run high-pressure green sand lines for large volumes of small and medium iron parts, mainly for automotive and tractor buyers.
- Shell moulding and no-bake shops sit in between, offering better finish or larger, more rigid moulds than plain green sand.
Capabilities to ask about
A foundry's name and website tell you little. Its equipment tells you what it can actually pour. Ask for the furnace type and capacity, the largest moulding box, the moulding method, and the heaviest casting it has made in the last year.
Then ask about control. A capable foundry has a spectrometer for chemistry, a sand testing lab, a way to check nodularity for SG iron, and hardness testing. Some also have radiography or ultrasonic testing in-house, while others send parts out. Our guide on checking casting chemistry explains what to look for in the lab.
Export experience is a capability too. A foundry that already ships abroad will know how to issue a proper material test certificate, mark parts for traceability, protect machined faces from rust and pack for a sea voyage. A foundry that sells only locally can learn this, but you should expect to spell it out in the order.
Finally, ask whether the foundry machines and paints parts itself or uses subcontractors. Many buyers want a finished part, not a raw casting. That is covered in machined and painted castings.
How to narrow the list
Start with metal and weight. A shop that pours 5 kg grey iron parts all day is the wrong place for a 400 kg steel valve body, however keen it is to quote. Then match volume: jobbing foundries suit low and medium runs, while automated lines need steady high volume to make sense.
Visit or audit before you commit. Many units that present themselves as foundries are traders who place orders with several shops. The checks in what a factory audit should contain apply directly to a foundry floor.
Next step
We find and audit foundries that match your metal, weight and volume, and we check samples and test reports before you place an order. To get a short list for your part, book a free sourcing review.