Explore our industrial casting solutions engineered to deliver optimal structural integrity, tight tolerances, and superior fatigue resistance.
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. We possess the structural capabilities to manufacture high-complexity machinery housings, protective enclosures, and vital stress-bearing structural components.
We are not just a casting supplier, but a one-stop precision manufacturing partner from concept to finished product.
Equipped with internationally advanced automated casting production facilities and comprehensive physical and chemical analysis equipment, the company significantly enhances manufacturing efficiency and product quality stability while meeting comprehensive testing requirements for the mechanical properties of different materials.
Leveraging strong engineering capabilities, a complete quality control system, and advanced management systems, the company has become a well-known brand manufacturer in the field of precision casting both domestically and internationally. Our products are exported to Germany, the United States, Italy, Canada, and other countries.
We serve as a key supplier of high-tech precision castings for industries such as automotive, rail transportation, engineering machinery, material handling machinery, agricultural machinery, and petroleum machinery. We provide high-quality products, services, and solutions to global industry leaders and mid-to-high-end clients in Europe and America.
An in-depth analysis of metallurgical trends, manufacturing capabilities, and global procurement strategies.
The manufacturing ecosystem in China, particularly in casting hubs like Shandong, offers unmatched integration. For complex castings like machinery housings—which require both high structural integrity and internal soundess to protect internal moving parts—the consolidation of the supply chain is critical. Chinese factories provide a "one-stop" workflow: from raw steel chemistry formulation and 3D simulation analysis to precision lost wax casting, heat treatment, and multi-axis CNC finishing.
By keeping metallurgy, casting, heat treating, and precision milling under one roof, we eliminate cross-facility logistics delay, guarantee metallurgical traceability, and reduce scrap rates to below 1.5% for highly complex components.
Global engineering teams require machinery housings to demonstrate high vibration damping, impact strength, and precise dimensional control. When sourcing these components, industrial buyers focus heavily on:
From initial design concepts to final product delivery, our key processes are completed in-house:
1. Mold Design & Simulation: Utilizing casting simulation software to optimize mold design and gating systems, predicting shrinkage and potential porosity before steel is poured.
2. Precision Casting (Lost Wax): Ideal for producing highly intricate geometries with wall thicknesses as thin as 3mm.
3. Precision Machining: Equipped with vertical/horizontal machining centers and CNC lathes, providing final tolerances down to ±0.01mm.
4. Quality Inspection: Full-spectrum analysis including spectrometer analysis, tensile testing, impact testing, and 3D CMM measurements.
Our commitment to quality is backed by international standards. The company has obtained ISO 9001, TS 16949, and UL certifications, ensuring strict process control over every production detail and continuously improving product quality to achieve maximum customer satisfaction.
Every batch of castings undergoes thorough mechanical properties testing, chemistry validation, and dimensional analysis prior to shipping, ensuring zero-defect assembly on our client's assembly line.
Continuous investment in modern machinery ensures precision, capacity, and repeatable manufacturing runs.
Providing high-stress components and housing solutions tailored for diverse global applications.
Complex gearboxes, planetary gear carriers, and wheel hubs designed for farming equipment, harvesters, and tractors that endure severe outdoor environments.
Corrosion-resistant oilfield cable protectors, valve components, and high-pressure housings designed to handle deep-sea and sub-surface pressures.
Forging strong mechanical backbones. High-strength wear-resistant castings supporting excavators, loaders, and cranes under extreme operating conditions.
Highly precise brake lever components and safety critical structural components conforming to TS 16949 automotive quality standards.
High-integrity alloy and stainless steel castings engineered to withstand harsh marine environments and prevent premature saltwater pitting.
Precision-cast carbon steel components engineered for structural safety, high impact toughness, and prolonged fatigue life cycles.
Expert answers to the most common metallurgical, design, and sourcing questions.
Our engineering team is ready to analyze your drawings (STEP, IGES, PDF) and provide detailed DFM feedback alongside a competitive quotation. Reach out to secure world-class precision castings manufactured under strict quality standards.
Inquiry NowA comprehensive range of precision cast and machined parts serving the global industrial sector.
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