JUNLONG Machinery Co., Ltd., located in the industrial heart of Weifang, Shandong, represents the pinnacle of Chinese manufacturing prowess. Spanning over 60,000 square meters, we have cultivated a production environment that harmonizes traditional craftsmanship with AI-integrated automation.
Our annual capacity of 20,000 tons reflects our scale, but our TS 16949 certification reflects our soul. We specialize in the high-precision casting of ZG35 carbon steel, alloy steel, and stainless steel, serving as the backbone for global automotive and industrial giants.
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In the competitive landscape of OEM automotive parts, material selection is the difference between a high-performance vehicle and a recall liability. ZG35 (Cast Carbon Steel) is a medium carbon steel casting material known for its superior mechanical properties, including a tensile strength of ≥510 MPa and a yield strength of ≥275 MPa.
ZG35 offers a balanced carbon content (0.32% - 0.40%), allowing for excellent weldability and machinability. This makes it ideal for custom car parts like steering knuckles and axle housings.
Our factory utilizes advanced normalizing and tempering processes to refine the grain structure of ZG35, ensuring maximum impact toughness for heavy-duty train parts and construction machinery.
Leveraging lost wax investment casting, we achieve CT5-CT7 dimensional accuracy, reducing the need for extensive secondary machining and lowering the TCO (Total Cost of Ownership) for our clients.
The global industrial landscape is shifting. Reliability is now as important as cost. At JUNLONG, we offer Supply Chain Resilience through vertical integration. From mold design (CAD/CAM) to automated precision casting and CNC finishing, every step is controlled under one roof in our Weifang facility.
Information Gain: Unlike many trading companies, our direct factory status allows for real-time quality adjustments. We utilize Physical and Chemical Analysis Equipment (Spectrometers, X-ray flaw detection) to provide a "Digital Birth Certificate" for every batch of carbon steel casting parts.
Integrating AI simulation software to predict shrinkage and porosity before the first drop of molten ZG35 is poured, ensuring 99.9% first-pass yield.
Implementing closed-loop sand reclamation systems and electric induction melting to reduce the carbon footprint of our precision castings.
Adapting ZG35 and alloy steel formulations for lightweight, high-strength structural components required by the next generation of Electric Vehicles (EV).
Our products are already trusted in Germany, the United States, Italy, and Canada. We understand that global trade is about more than just shipping; it's about compliance.
Get a detailed metallurgical analysis of our ZG35 steel and a custom quote for your automotive project.
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Precision structural parts that optimize weight-to-strength ratios for modern vehicle chassis.
Heavy-duty brackets and pivot points for excavators and loaders working in extreme conditions.
Junlong
