Engineering excellence delivered through automated manufacturing and rigorous quality control.
Founded in 2014 and strategically located in Weifang, Shandong—a world-renowned industrial heartland—JUNLONG Machinery Co., Ltd. has evolved into a powerhouse of mild steel products and precision castings. Spanning across 60,000 square meters, our facility integrates the entire lifecycle of manufacturing, from metallurgical design to deep precision machining.
With an annual capacity of 20,000 tons, we specialize in transforming raw carbon steel, alloy steel, and stainless steel into high-performance components. Our workforce of over 200 dedicated professionals, including 30+ elite engineering technicians, ensures that every casting meets the uncompromising standards of global supply chains.
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Navigating the complexity of modern industrial requirements with bespoke mild steel solutions.
As the global population rises, the demand for durable agricultural machinery parts—such as harvesters and soil tillage components—is surging. We provide Q345 carbon steel castings that offer the perfect balance of weldability and structural strength.
Exploration in extreme environments requires petroleum machinery parts that resist fatigue and pressure. Our investment castings for pump valves and ESP cable protectors are engineered for high-integrity sealing and longevity.
Railways and automotive logistics depend on components that can withstand constant vibration. Our high-strength carbon steel truck parts and railway investment castings are the backbone of secure modern transport.
Bridging traditional metallurgy with AI-driven manufacturing and Industry 4.0 protocols.
Mild steel, defined by its low carbon content (0.05% to 0.25%), remains the most versatile material in the industrial world. Its inherent ductility and cost-efficiency make it the "gold standard" for complex structural components. At JUNLONG, our roadmap focuses on the "Three Pillars of Innovation":
1. Material Science Optimization: We are refining the grain structure of mild steel through controlled heat treatment processes to enhance impact toughness without compromising the material's weldability. This is critical for China mild steel products competing on the global stage.
2. Automated Precision Casting: By utilizing internationally advanced automated production facilities, we eliminate the "human factor" in the lost-wax process. Our automated wax injection and shell-building robots ensure consistency that manual factories cannot match.
3. Deep Machining Integration: Modern buyers no longer seek "rough blanks." Our facility is equipped with horizontal/vertical machining centers and CNC lathes, offering Full Industrial Chain Manufacturing. This reduces lead times and quality risks by keeping every step under one roof.
The next decade will be defined by "Green Steel." JUNLONG is actively exploring low-carbon casting techniques and waste-sand recycling systems to minimize our environmental footprint while maintaining ISO 9001 and TS 16949 compliance. As a leading China mild steel products manufacturer, we understand that sustainability is the ultimate E-E-A-T metric for top-tier European and American clients.
Entering international markets like the USA, Germany, Italy, and Canada requires more than just high-quality steel; it requires verifiable trust. JUNLONG holds the following certifications to guarantee reliability:
We provide full physical and chemical analysis reports with every batch, ensuring that the mechanical properties of your mild steel products meet or exceed ASTM, DIN, or JIS standards.
Showcasing the machinery that enables 20,000 tons of precision every year.
Addressing the most common queries from global procurement managers.
From railway infrastructure to high-tech automotive components.
Partner with China's leading mild steel products manufacturer for reliability, precision, and global compliance.
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