Industry-leading components for automotive, railway, and heavy machinery.
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.
As a senior China Investment Casting Automotive Parts Manufacturer, our supply chain resilience is rooted in the "Shandong Casting Cluster," ensuring a steady supply of high-grade raw materials and efficient logistics to major global ports. With over 200 employees, including 30+ specialized engineering technicians, we bridge the gap between complex design and volume production.
The convergence of "AI-Driven Design" and "Lightweight Casting" is reshaping the automotive landscape.
Equipped with internationally advanced automated casting production facilities. By integrating AI-optimized thermal cycling, we significantly enhance manufacturing efficiency and product quality stability while meeting comprehensive testing requirements for high-performance automotive alloys.
Leveraging strong engineering capabilities and a complete quality control system, we serve the US, Germany, Italy, and Canada. As a top-tier factory, we address the global shift toward Electric Vehicles (EV) requiring thinner-walled, complex cooling housing components.
We are transitioning from traditional carbon steel to low-alloy high-strength steels and specialized stainless steels. Our future roadmap includes hybrid-casting processes that combine the precision of lost wax with the structural integrity of forging for safety-critical parts.
Furthermore, the company has obtained ISO 9001, TS 16949, and UL quality management system certifications. For the automotive industry, IATF 16949 is our "Golden Rule," ensuring process control over every production detail—from molten metal analysis to 3D coordinate measurement of final parts.
Our localized support includes rapid response for OEM engineering changes and transparent compliance with REACH/RoHS environmental standards, providing the Information Gain necessary for procurement directors to de-risk their supply chains.
Bridging the gap between heavy industry and precision performance.
Control arms, turbocharger housings, and battery cooling connectors. We focus on weight reduction to extend EV range while maintaining structural stiffness.
Forging strong mechanical backbones. Excavators and loaders rely on our wear-resistant alloy castings for hydraulic pump bodies and track components.
Oilfield cable protectors and centralizers. Our precision casting ensures performance in extreme pressures and corrosive environments.
World-class facilities for world-class products.
Our workshop includes Horizontal & Vertical Machining Centers, CNC lathes, and spectrometers for real-time chemical composition analysis, ensuring that "China Manufacturer" equals "Superior Precision."
Investment casting (lost wax) provides unparalleled dimensional accuracy and surface finish. It allows for complex geometries that are impossible with sand casting and more cost-effective than CNC machining from solid blocks for high-volume automotive production.
We implement a triple-tier inspection system: 1. Spectrometer analysis of the molten metal; 2. Magnetic particle and ultrasonic testing for internal defects; 3. Final CMM (Coordinate Measuring Machine) verification for dimensional tolerance compliance.
Standard mold development and sample production typically take 3-5 weeks, depending on complexity. Once approved, mass production cycles are optimized via our automated lines to meet Just-In-Time (JIT) requirements.
Yes. We utilize energy-efficient induction furnaces and have implemented water recycling systems. We also optimize part designs for lightweighting, directly contributing to lower CO2 emissions in the end-use automotive applications.
From agriculture to specialized valve components.
Our company will continue to strengthen research and development efforts for new products and technologies, integrate advanced management and technical resources, and strive to remain your world-class precision casting partner.
REQUEST A WHITE PAPER & QUOTE
Junlong
