In the current geopolitical and economic landscape, global automotive OEMs are shifting toward diversified supply chain resilience. Carbon steel precision casting remains the backbone of heavy-duty and passenger vehicle manufacturing due to its exceptional strength-to-weight ratio and cost-efficiency. Our factory addresses the rising demand for "Near-Net-Shape" components that reduce machining time by up to 30%.
Beyond simple parts, we offer integrated manufacturing ecosystems. From the initial 3D simulation of molten metal flow to final heat treatment, our solutions mitigate common casting defects like porosity and shrinkage. This macro approach ensures that components for automotive cooling systems, transmissions, and heavy-duty truck valves meet the rigorous safety standards of Europe and North America.
Our roadmap integrates Industry 4.0 automation. We are transitioning from traditional manual wax patterns to automated robotic dipping and automated pouring systems. This ensures a 99.8% consistency rate in dimensional tolerances. Furthermore, we are exploring "Green Foundry" initiatives to reduce carbon footprints, aligning with global sustainability targets for 2030.
JUNLONG Machinery Co., Ltd. was founded in 2014. Located in Weifang, Shandong, the company covers a total area of 60,000 square meters and has an annual production capacity of 20,000 tons of precision castings and machined finished parts. We specialize in materials such as carbon steel, alloy steel, and stainless steel.
With over 200 employees, including more than 30 engineering technicians, we are a high-quality casting supplier integrating precision casting and deep processing. Our facilities are equipped with internationally advanced automated casting production lines and comprehensive physical and chemical analysis equipment.
We provide a seamless connection from mold manufacturing and precision casting to advanced machining (CNC centers) and surface treatment. This one-stop approach eliminates multi-factory communication risks.
Certified with ISO 9001 and TS 16949, we ensure process control over every production detail. Our in-house labs conduct spectral analysis, mechanical testing, and ultrasonic inspections.
Our products are exported to Germany, the United States, Italy, and Canada. We understand local compliance (UL, RoHS) and provide localization support for global supply chain integration.
Serving automotive, rail transportation, construction machinery, agricultural machinery, and petroleum machinery. We forge the backbone of heavy industries.
3D Modeling and solidification simulation to prevent air traps.
Precision wax pattern injection for complex geometries.
Robotic dipping ensures uniform ceramic coating thickness.
Vertical and horizontal CNC centers for micron-level accuracy.
Construction machinery such as excavators, loaders, and cranes relies on high-strength, wear-resistant castings to support heavy-duty operations. We provide customized precision casting services, producing structurally complex and high-load-bearing components to ensure machinery remains durable and efficient in harsh environments like mining and road construction.
Available Materials: AISI 1020, 1045, 4140, 8620 Carbon Steel and specialized alloys.
We provide full PPAP (Production Part Approval Process) level 3 documentation for automotive clients, ensuring total transparency in material certification and dimensional results.
Our surface treatments include shot blasting, zinc plating, electrophoresis, and powder coating, meeting ASTM and DIN standards for corrosion resistance.
Flexible MOQ (Minimum Order Quantity) options and safety stock management for long-term contract partners in the EU and USA.
Our company will continue to strengthen research and development efforts for new products and technologies, integrate advanced management and technical resources, build a powerful brand, and strive to become a world-class precision casting supplier!
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Junlong
