Grey and ductile iron castings. From pattern making to inspection.
Grey and ductile iron castings are best sourced from Kolhapur, Coimbatore, Rajkot, Batala, Belagavi, Kolkata–Howrah and Agra. Indian foundries pour iron castings from under a kilogram to several tonnes for pumps, machinery, vehicles, agriculture and infrastructure.
- 7
- process steps
- 7
- mapped clusters
- 7325.10
- typical HS heading
- Clusters for this product
- Other clusters
How it is made, in 7 steps.
The sequence Indian factories follow, from raw material to an approved part ready to ship.
- Pattern makingWood, metal or resin patterns and core boxes
- MouldingGreen-sand or no-bake moulds with cores
- Melting & pouringInduction melting; inoculation and magnesium treatment for ductile iron
- Knock-out & fettlingSand removed, risers cut, grinding
- Heat treatmentAnnealing or normalising as specified
- Machining & paintingCritical faces machined, primer applied
- InspectionChemistry, microstructure, hardness and dimensions
What buyers plan around.
- Typical HS heading
- 7325.10 (non-malleable cast iron), 7325.99; parts often by function
Check 7325.10 in the HS code finder - Lead time
- Patterns and samples 4–6 weeks, production 6–8 weeks
- India's edge
- India has one of the world's largest foundry industries, giving buyers a wide choice of capacity and specialisms.
- Materials
- Process families
The clusters that make it.
Listed in the order buyers usually start. Each page covers the nearest ports and neighbouring clusters.
Tests we plan for.
The checks that usually sit in the inspection plan for this product. We agree the final list with you against your drawing and market.
How our inspections work- Chemical analysis per heat
- Tensile and hardness tests from test bars
- Microstructure and nodularity (ductile iron)
- Dimensional check
- Pressure test for fluid-handling parts
Straight answers.
Anything else, ask us directly. A principal replies, not a bot.
anirudh@sourcesquid.coWhat moulding methods are used?
Green-sand moulding for high volumes, and no-bake resin sand for larger or lower-volume parts.
Can foundries machine castings?
Yes. Most export foundries machine castings in-house or through nearby partners.
Which standards are common?
IS 210 and IS 1865, EN 1561 and EN 1563, and ASTM A48 and A536.
Get a free teardown for your grey and ductile iron castings.
Send one drawing, photo or quote. Within 48 hours we return how it is made, the best-fit Indian clusters and a realistic target price.