Who We Are
YNJ is a professional foundry specializing in high manganese steel castings and wear-resistant parts for the mining, carieră, cement and recycling industries.
Wear Parts & Crusher Machines for Crushing Operations
Founded in 2007, YNJ integrates research, production and sales. We are a specialized manufacturer of high manganese steel castings for mining and aggregate crushing equipment.
- ✓ Jaw crusher jaw plates, side plates, toggle plates and wedges
- ✓ Cone crusher mantles, bowl liners, concaves and torch rings
- ✓ Impact crusher blow bars, impact plates and liner plates
- ✓ Hammer mill hammers, grate bars and liners
- ✓ Ball mill liners, SAG mill liners and bucket teeth
- ✓ Complete crusher machines: jaw, ciocan, impact, compound and cone crushers
Our products are used in stone crushing, minerit, metalurgie, cement and chemical industries, exported to Europe, America de Nord, America de Sud, Africa, Orientul Mijlociu și Asia de Sud-Est.
Three Casting Processes for Different Needs
We choose the right process to balance cost, surface quality, dimensional accuracy and mechanical properties.
Sand Casting
Traditional sand moulding for large and heavy wear parts, offering flexibility in size from 1 kg la 6 tone.
Precision Casting
High dimensional accuracy and smooth surfaces for complex medium and small castings.
V-Process Casting
Vacuum-formed moulds deliver excellent surface finish and precise dimensions for high-value wear parts.
Tratament termic
In-house solution treatment, quenching and tempering to achieve the right hardness and toughness.
What You Can Count On
Simple, practical commitments behind every casting.
Right Material Recommendation
We recommend the best manganese steel, high chrome iron or carbon steel grade for your crushing conditions.
Quality Inspection on Every Batch
Chemical composition, hardness and dimensional reports are provided for every production batch.
Export-Ready Packing
Seaworthy wooden cases with steel frames and waterproof film protect castings through long sea journeys.
Worldwide Shipping
We handle documentation and shipping to customers across 60+ countries via Ningbo / Shanghai port.
Tell Us About Your Project
Share your crusher model, drawing or sample — we will recommend the right material and send a clear quote.
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