Explore our core engineered precision cast assemblies, machined blanks, and high-tolerance components crafted to withstand high friction and environmental fatigue.
Modern industrial agriculture requires components that can endure severe soil conditions, abrasive sand, rocky terrains, and chemical fertilizers. Cast components manufactured via sand casting often lack the mechanical strength and close dimensional tolerances required for high-speed seed drills, combines, and autonomous farming equipment. This is where precision investment casting (lost wax casting) becomes critical.
By leveraging lost wax technology, global equipment manufacturers can eliminate heavy machining, minimize post-cast grinding, and reduce component weight without sacrificing structural integrity. Investing in precision casting translates directly into longer life-cycles, minimal downtime, and higher fuel efficiency for tractors and harvesting implements.
JUNLONG Machinery Co., Ltd. represents the cutting edge of industrial metal casting. Founded in Weifang, Shandong, we operate a highly integrated casting and deep CNC-processing factory.
Our workshop is equipped with internationally advanced automated casting production lines. By automating our wax pattern fabrication, shell building, and chemical composition testing, we secure high consistency across production runs of up to tens of thousands of units.
We work with a broad material portfolio that includes carbon steel (specifically grades like A27, Q235, Q345), alloy steel (such as CrMo steels), and high-grade stainless steel (such as 304, 316, and 410). Physical and chemical properties are systematically verified in our internal laboratory utilizing optical emission spectrometers, coordinate measuring machines (CMM), and non-destructive testing (NDT).
Choosing the correct metallurgical alloy defines the boundary between machine reliability and premature field failure.
For high structural strength without extreme cost. Best suited for main frames, brackets, hitches, and steering parts. Carbon steel provides the necessary ductile strength and toughness to withstand sudden impacts in uneven soils.
By blending chrome, nickel, and molybdenum, we yield castings with higher hardenability and fatigue resistance. Critical for gears, forklift parts, oil cable centralizers, and high-impact tillage teeth.
Perfect for components working directly with acidic soils, corrosive manure, and chemical sprayers. Excellent corrosion resistance prevents premature pitting, guaranteeing continuous performance.
Our production conforms to global industrial standards. This table highlights our key capabilities:
| Parameter | Investment Casting Capacity | Industrial Standards Reached |
|---|---|---|
| Dimensional Tolerance | ISO 8062-3 DCTG4 to DCTG6 | Matches DIN 1680 / ASTM A802 |
| Surface Roughness (Ra) | 3.2 to 6.3 micrometers (μm) | Drastically reduces machining allowance |
| Casting Weight Range | 0.1 kg to 150 kg | Supports both micro components and heavy frames |
| Tensile Strength Range | Up to 1100 MPa (Heat-Treated Alloys) | Optimizes payload and heavy-duty structural load |
For mid-to-high-end clients in North America and Western Europe, sourcing from China must align with strict compliance guidelines. JUNLONG Machinery complies with the following quality and safety protocols:
Our localized warehousing support partnerships ensure buffer stock can be stored close to your assembly lines, protecting you against shipping delays or ocean freight volatility.
Why do industry leaders in Germany, the USA, Italy, and Canada consistently source precision castings from Weifang, Shandong?
Weifang is a global center for machinery manufacturing and foundry technology. This allows our factory to acquire premium raw materials, specialized tooling, and advanced tooling machines locally, reducing lead times.
We do not just ship raw castings. JUNLONG houses a complete CNC machining facility including horizontal and vertical machining centers, CNC lathes, and grinders. We ship finished components directly to your assembly lines.
With a 20,000-ton annual output and an automated production flow, we offer highly competitive pricing structures while maintaining high consistency in chemical composition and dimensions.
Where are our precision castings deployed in the field? We support the following sectors:
Global demand is shifting towards high-speed, lightweight farm equipment. Utilizing advanced simulations and material science, we help designers slim down casting walls while keeping structural yield strength high. By replacing heavy weldments with custom-optimized castings, manufacturers decrease fuel consumption and limit soil compaction.
Furthermore, eco-friendly casting protocols are now a legal necessity. Our factory utilizes sand-reclamation technologies and low-emission wax melting to conform to green manufacturing mandates, securing your supply chain from local environmental regulatory interruptions.
Our quality system is verified by international inspection bodies. Check our certificates and quality workflows below:
Key insights concerning custom precision agricultural castings, tooling lead times, and global shipping.
Lost wax investment casting provides much tighter dimensional tolerances (ISO 8062 DCTG4-6) and a smoother surface finish (Ra 3.2-6.3 μm) compared to sand casting. This reduces or eliminates the need for expensive post-casting machining. Furthermore, it supports the creation of complex inner geometries and thin walls, allowing for lighter, stronger component designs.
We are ISO 9001 and TS 16949/IATF 16949 certified. Every production melt is analyzed using our optical emission spectrometer. We assign unique tracking batch numbers to all shipments and supply material test reports, dimensional inspection records, and mechanical test documents (EN 10204 3.1) upon request.
Tooling design and sample fabrication generally require 3 to 4 weeks. Once prototype samples receive client validation, serial mass production takes between 4 and 6 weeks, depending on order size and machining requirements.
We process carbon steel (ASTM A27, Q235, Q345), alloy steel (Cr-Mo, Ni-Cr, forklift-specific grades), and stainless steel (304, 316, 410, and high-nickel alloys). Custom formulations can also be matched to meet client-specific mechanical criteria.
Yes. We provide comprehensive surface finishing treatments including sandblasting, shot blasting, zinc plating, hot-dip galvanizing, powder coating, electrophoresis (E-coat), and customized anti-rust oils.
We are situated in Weifang, Shandong, near Qingdao Port, facilitating fast and efficient sea logistics. We also work alongside global freight forwarders to support DDP delivery, localized storage solutions, and safety stock management.
Connect with our expert engineering team today. Send us your 3D CAD models (STEP/IGS/DWG) for an in-depth manufacturing feedback review and cost estimate within 48 hours.
Contact Our Engineering TeamBeyond agricultural parts, our Shandong foundry delivers precision casting solutions to heavy machinery, petroleum, and construction industries.
Junlong
