Replacement Ductile Iron Casting is the specialty of Leesh Holdings’ sand foundry for agricultural machinery. We produce ductile iron castings that keep seeders, plows and tillage equipment working season after season — combining the strength of steel with the economy and machinability of iron. Whether you need to match an original OEM part or improve on it, our green sand and resin sand lines deliver agriculture spare parts that fit, wear well and last.
Sand casting remains the most widely used casting method in the world — roughly 80% of all castings are made this way — because molds are inexpensive and the process adapts to almost any shape, size and production volume. Leesh Holdings operates automatic molding lines for both iron and steel, so your replacement ductile iron parts move from pattern to finished casting without leaving our plant.
Capabilities
Replacement Ductile Iron Casting for Agriculture — Capabilities at a Glance
Tolerance grades follow the ISO 8062 system for castings; final values are confirmed against your drawing during engineering review.
Materials
Ductile Iron Grades for Agriculture Spare Parts
We cast ductile iron (spheroidal graphite iron) to ASTM A536 and GB specifications. The nodular graphite structure gives these grades high strength, good elongation and excellent shock resistance — exactly what tillage and seeding components need in abrasive soil.
For adjacent parts that need less ductility, we also cast gray iron to ASTM A48 Cl.20 – Cl.40 and GG20 – GG35 on the same lines.
Process
How We Sand Cast Your Replacement Parts
1. Pattern Making
Wood, resin or metal patterns built from your drawing, 3D model or sample part.
2. Sand Mold & Core
Green sand or resin sand compacted around the pattern; cores form internal cavities.
3. Melting & Pouring
Ductile iron melted to grade, nodulized and poured at controlled temperature.
4. Cooling & Shakeout
The casting cools in the mold, then the sand is knocked away from the part.
5. Cutoff & Cleaning
Risers and runners removed; residual sand and burrs cleaned off.
6. Machining & Inspection
Optional machining, then dimensional and material verification before dispatch.
Applications
Agriculture Spare Parts We Produce in Ductile Iron
Seed Openers & Coulters
Wear-resistant opener bodies and coulter hubs for planters and seed drills.
Disc Blades & Plow Shares
Tough, shock-resistant blades and shares that survive stones and hard soil.
Gearbox Housings
Dimensional housings for rotary tillers, mowers and balers.
Linkage Arms & Brackets
Structural parts that carry heavy loads through years of field work.
Hubs, Sprockets & Pulleys
Power-transmission components cast to close tolerances.
Pump & Valve Bodies
Pressure-tight iron castings for irrigation and implement hydraulics.
Why Leesh
Why Choose Leesh Holdings for Replacement Ductile Iron Parts
Quality
Quality Control for Every Ductile Iron Casting
Every batch is verified before dispatch: chemical composition analysis, tensile and hardness testing, and dimensional inspection with calibrated instruments. Non-destructive testing can be arranged for critical components.
FAQ
Ductile Iron Casting — Frequently Asked Questions
Need Replacement Ductile Iron Parts for Your Machine?
Send your drawings today — our engineers reply within 24 hours with pricing and a delivery schedule.
