Founded in 2014 and headquartered in Weifang, Shandong, JUNLONG Machinery Co., Ltd. has evolved into a global titan in the precision casting industry. Spanning across 60,000 square meters, our facility represents the pinnacle of Chinese manufacturing prowess, combining traditional lost wax techniques with AI-enhanced quality monitoring. With an annual production capacity of 20,000 tons, we specialize in high-complexity components crafted from carbon steel, alloy steel, and stainless steel.
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Modern procurement for Investment casting mechanical components has shifted from a cost-only focus to a "Total Cost of Ownership" (TCO) and "Resilience" model. Tier-1 manufacturers in North America and Europe are increasingly seeking partners who offer not just casting, but a vertically integrated solutionāfrom metallurgical analysis to final CNC machining. JUNLONG Machinery addresses this by maintaining a staff of 30+ engineering technicians who utilize simulation software to predict casting defects before a single mold is poured.
The "China Advantage" in the casting sector has matured. It's no longer just about labor; it's about the massive industrial cluster effect. In Shandong, we have immediate access to specialized alloy suppliers, advanced tooling workshops, and world-class logistics hubs. This enables us to reduce lead times by 30% compared to emerging markets while maintaining strict adherence to TS16949 standardsāthe gold standard for automotive quality management.
The investment casting industry is undergoing a green revolution. JUNLONG is at the forefront, implementing waste-heat recovery systems and wax recycling processes that align with global ESG (Environmental, Social, and Governance) requirements. Furthermore, the integration of Automated Precision Casting lines ensures that every componentāwhether for a railway brake system or a hydraulic pipe fittingāpossesses identical mechanical properties, minimizing the statistical variance that often plagues traditional foundries.
Precise control over carbon, alloy, and stainless steel composition using vacuum induction melting techniques to ensure zero porosity.
Utilizing CAD/CAM integrated mold manufacturing to ensure dimensional accuracy within ±0.1mm for complex geometries.
Proprietary ceramic shell coating processes that deliver Ra 3.2 surface finishes, reducing the need for secondary grinding.
We strictly adhere to ISO 9001, TS 16949, and UL certifications. For our clients in the EU and USA, we provide full material traceability reports (3.1 certificates) and REACH/RoHS compliance documentation.
To support "Just-in-Time" (JIT) manufacturing, we collaborate with local logistics partners in Germany, USA, and Italy to maintain safety stocks, mitigating global shipping volatility.
Our technical team provides localized DFM (Design for Manufacturing) support, helping your R&D teams optimize component geometry for the casting process, saving up to 20% in material costs.
We maintain an "Open Door" policy for third-party audits (SGS, TUV, BV) and client visits, ensuring total transparency in our manufacturing ethically and technically.








We specialize in carbon steel, alloy steel, and stainless steel. We can also customize chemical compositions based on specific mechanical requirements like high toughness, heat resistance, or wear resistance.
Sample development usually takes 3-4 weeks (including mold design). Mass production typically ranges from 4-6 weeks depending on complexity and volume.
Yes, we are a one-stop shop. We provide CNC machining, heat treatment, and various surface finishes such as painting, galvanizing, and polishing to ensure parts are ready for assembly.
Every batch undergoes physical and chemical analysis, including spectral analysis, magnetic particle inspection, ultrasonic testing, and CMM dimensional inspection, backed by ISO/TS certifications.
Partner with China's leading precision casting foundry for unparalleled quality and engineering support.
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