# Cast iron (grey and ductile) sourcing in India

> Where to source cast iron (grey and ductile) parts in India: Kolhapur, Coimbatore, Rajkot and more. Common grades, processes, product guides and buying tips.

Source: https://sourcesquid.co/india-atlas/materials/cast-iron/

Material · Metal

# Cast iron (grey and ductile). Kolhapur, Coimbatore and Rajkot.

Cast iron is bought from India as pump and valve bodies, machine parts, manhole covers, cookware and décor castings. The strongest iron foundry clusters are Kolhapur, Coimbatore, Rajkot, Batala, Belagavi and Kolkata–Howrah.

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7
    mapped clusters

6
    common grades listed

5
    product guides

Where it is worked · **Cast iron (grey and ductile)** 7 clusters

  * __Cast iron (grey and ductile) clusters
  *  __Other clusters

Grades and processes

## What to specify.

Grades Indian suppliers quote most often, and the process families that shape this material.

### Common grades

  * IS 210 FG 260
  * EN-GJL-250 (grey)
  * EN-GJS-400-15 (ductile)
  * EN-GJS-500-7 (ductile)
  * ASTM A48 Class 30
  * ASTM A536 65-45-12

### Processes

[9 clusters**Casting & foundry**Investment (lost-wax) casting · Green-sand casting · No-bake (resin sand) casting](https://sourcesquid.co/india-atlas/processes/casting-and-foundry/)[14 clusters**Machining & precision**CNC turning · CNC milling (3, 4 and 5-axis) · Turn-mill and Swiss-type machining](https://sourcesquid.co/india-atlas/processes/machining-and-precision/)[6 clusters**Metalware & brass**Sand casting of brass and aluminium · Metal spinning and deep drawing · Brass turning on auto lathes and CNC](https://sourcesquid.co/india-atlas/processes/metalware-and-brass/)[14 clusters**Auto & EV components**Precision machining of shafts and gears · Closed-die forging · Aluminium pressure die casting](https://sourcesquid.co/india-atlas/processes/auto-and-ev-components/)

Where to source

## 7 clusters working cast iron (grey and ductile).

Each cluster page covers what the city is known for, its nearest ports and the clusters around it.

[ Maharashtra Major cluster **Kolhapur** Foundry, Kolhapuri chappals, jaggery Casting & foundryLeather & footwearFood, spices & agri ](https://sourcesquid.co/india-atlas/clusters/kolhapur/)[ Tamil Nadu Major cluster **Coimbatore** Pumps, motors, wet grinders, textile machinery, foundry Casting & foundryMachining & precision ](https://sourcesquid.co/india-atlas/clusters/coimbatore/)[ Gujarat Major cluster **Rajkot** Diesel engines, submersible pumps, bearings, aluminium castings, machine tools Casting & foundryMachining & precisionForging ](https://sourcesquid.co/india-atlas/clusters/rajkot/)[ Punjab Established cluster **Batala** Castings, agricultural implements, machine tools Casting & foundryMachining & precision ](https://sourcesquid.co/india-atlas/clusters/batala/)[ Karnataka Established cluster **Belagavi** Foundry, aerospace precision, hydraulics Casting & foundryMachining & precision ](https://sourcesquid.co/india-atlas/clusters/belagavi/)[ West Bengal Major cluster **Kolkata – Howrah** Foundry & engineering, leather goods Casting & foundryLeather & footwearMachining & precision ](https://sourcesquid.co/india-atlas/clusters/kolkata/)[ Uttar Pradesh Major cluster **Agra** Footwear, foundry, marble inlay, durries Leather & footwearCasting & foundryStone & marble ](https://sourcesquid.co/india-atlas/clusters/agra/)

Product guides

## Products made from it.

[6 steps · 4 clusters**Brass & metal home décor**Design & sampling → Sand or die casting → Hand finishing → Plating & lacquer → Assembly → Drop-tested packing](https://sourcesquid.co/india-atlas/products/brass-metal-home-decor/)[7 steps · 8 clusters**Machined auto components** Material → CNC turning → Milling & drilling → Heat treatment → Grinding → Inspection & PPAP → Rust-proof packing](https://sourcesquid.co/india-atlas/products/machined-auto-components/)[6 steps · 7 clusters**Pump and valve components** Pattern & core → Casting → Fettling & heat treatment → Machining → Pressure testing → Painting & packing](https://sourcesquid.co/india-atlas/products/pump-valve-components/)[7 steps · 7 clusters**Grey and ductile iron castings** Pattern making → Moulding → Melting & pouring → Knock-out & fettling → Heat treatment → Machining & painting → Inspection](https://sourcesquid.co/india-atlas/products/iron-sand-castings/)[6 steps · 5 clusters**Cast-iron fitness equipment (kettlebells, dumbbells)** Pattern & moulding → Melting & pouring → Fettling & grinding → Weight calibration → Coating → Inspection & packing](https://sourcesquid.co/india-atlas/products/cast-iron-fitness-equipment/)

Buying tips

## Buy it with confidence.

What to ask for in the RFQ and check when goods arrive.

  * State the grey or ductile grade and ask for tensile test bars poured with each heat.
  * For ductile iron, request nodularity and microstructure reports.
  * Agree acceptance levels for porosity and sand inclusions on machined faces before production.

Cast iron (grey and ductile) questions

## Straight answers.

Anything else, ask us directly. A principal replies, not a bot.

[anirudh@sourcesquid.co](mailto:anirudh@sourcesquid.co)

### What is the difference between grey and ductile iron?

Grey iron has flake graphite, which makes it easy to machine and good at damping vibration. Ductile iron has spheroidal graphite, which makes it much stronger and tougher.

### Which Indian cities are best for iron castings?

Kolhapur, Coimbatore, Rajkot, Batala and Belagavi have large iron foundry clusters, and Kolkata–Howrah has a long foundry tradition.

### Can Indian foundries supply machined and painted castings?

Yes. Most export foundries machine, pressure-test and paint castings before shipping.

More materials

## Related materials.

[Metal**Aluminium** 8 clusters · 6063-T5, 6061-T6](https://sourcesquid.co/india-atlas/materials/aluminium/)[Metal**Carbon and alloy steel** 10 clusters · IS 2062 E250, EN8 / C45](https://sourcesquid.co/india-atlas/materials/carbon-steel/)[Metal**Stainless steel** 7 clusters · SS 304, SS 304L](https://sourcesquid.co/india-atlas/materials/stainless-steel/)

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