Founded in 2014 and headquartered in Weifang, Shandong, JUNLONG Machinery Co., Ltd. has evolved into a global titan in the investment casting industry. Spanning 60,000 square meters, our facility integrates the entire value chain—from advanced mold design and precision lost wax casting to high-end CNC machining and rigorous surface treatment. With an annual capacity of 20,000 tons, we specialize in high-performance materials including carbon steel, alloy steel, and stainless steel.
Our workforce of over 200 elite professionals, including 30+ dedicated engineering technicians, ensures that every component exceeds the stringent requirements of IATF 16949 and ISO 9001 standards. We don't just supply parts; we provide high-tech solutions for the most demanding automotive and industrial environments.
The global automotive industry is undergoing its most significant transformation since the invention of the assembly line. The transition to Electric Vehicles (EVs) has placed unprecedented demand on precision casting manufacturers. Lightweighting is no longer an option but a necessity to offset the weight of battery packs and extend driving range. Precision casting allows for the creation of complex, near-net-shape components that reduce the need for secondary machining and minimize material waste.
At JUNLONG, we are at the forefront of this shift, utilizing Lost Wax Casting (Investment Casting) to produce ultra-thin wall motor housings, structural brackets, and battery enclosure components that offer a superior strength-to-weight ratio compared to traditional sand casting or forging.
The "foundry of the future" is defined by data-driven precision. Our technical roadmap includes the integration of AI-enhanced solidification simulation software. This allows our engineers to predict potential defects like shrinkage or porosity before the first drop of metal is poured. By optimizing gate systems and thermal profiles virtually, we achieve a first-article success rate that exceeds 98%.
Controlled humidity and temperature environments ensure consistent ceramic shell thickness, leading to superior surface finishes (Ra 3.2 or better).
On-site chemical analysis of every heat ensures that material composition matches international standards (ASTM, DIN, JIS) exactly.
Horizontal and vertical machining centers allow us to deliver "ready-to-install" components with tolerances as tight as ±0.01mm.
Advanced dust collection and wax reclamation systems align our production with global "Green Manufacturing" ESG goals.
Leveraging precision casting for high-load, high-reliability environments.
From turbocharger housings to chassis structural parts. Our components withstand extreme thermal cycling and mechanical vibration. We support the high-speed growth of the global EV supply chain with rapid prototyping and scalable production.
Heavy-duty excavators and loaders require alloy steel castings that resist abrasion and impact. We utilize specialized 16Mn steel and high-chrome alloys to ensure longevity in mining and construction sites.
Modern farming equipment demands components that can handle corrosive fertilizers and harsh weather. Our precision investment castings provide the durability needed for the next generation of harvesters and tractors.
As a global casting leader, we mitigate your supply chain risks. We offer a Single Point of Responsibility. Many suppliers only offer casting; we offer mold design, casting, heat treatment, machining, and surface coating (zinc plating, powder coating, electrophoresis).
This integrated approach reduces lead times by 30% and eliminates communication errors between different vendors. Whether you are in Germany, the USA, Italy, or Canada, our logistics team ensures seamless DDP/CIF delivery.
We work with a wide range of materials including Carbon Steel (WCB, LCC), Alloy Steel (4140, 8620, 16Mn), and Stainless Steel (304, 316, 17-4PH). We also customize chemical compositions based on specific mechanical requirements like hardness, tensile strength, and corrosion resistance.
For automotive components, we adhere to the ISO 8062-3 (CT4 to CT6) standard for investment casting. Combined with our IATF 16949 certification, we implement APQP and PPAP processes to ensure that every dimension is verified before mass production begins.
Yes. With an annual capacity of 20,000 tons and 60,000 square meters of production space, we are equipped for both small-batch specialized components and high-volume mass production for global automotive and machinery manufacturers.
Generally, mold manufacturing takes 15-25 days, and sample casting takes another 7-10 days. Once the sample is approved, mass production usually requires 30-45 days depending on the complexity and volume of the order.
Our engineering team is ready to review your technical drawings (CAD, STP, PDF) and provide a comprehensive DFM (Design for Manufacturing) analysis within 24 hours.
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