Junlong
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Main products include precision casting of carbon steel, low carbon steel, medium carbon steel, high carbon steel, alloy steel, high manganese steel, high chromium steel, and high nickel steel. These components are essential for auto parts, forklift investment casting, ship parts, train parts, mechanical engineering, petroleum machinery, and mining machinery.
Total factory area supporting large-scale operations.
Annual production output reaching global market demands.
Skilled employees including R&D and QC specialists.
The facility operates three production lines, utilizing two composite processes (silica sol + water glass) and one dedicated silica sol process. We hold ISO9001:2005 quality management system certification and full environmental assessment approvals.
By the end of 2015, all workshops transitioned to automated production to guarantee consistent quality and efficiency. Key equipment includes:
This automation allows for precision casting products ranging from 0.1KG to 500KG, with wall thickness as low as 3mm. Complex shapes are handled with ease, effectively avoiding defects like porosity, sand holes, slag inclusion, and shrinkage.
Our specialized complex process (silica sol + water glass) utilizes low-temperature wax. By using silica sol for the four shell layers and water glass for the three layers, we achieve a surface finish and internal quality nearly identical to the pure silica sol process but at a significantly more competitive price.
This technology is the most suitable for large batch products, ensuring both high-quality requirements and reasonable profit margins for our international partners.
Equipped with spectrometer, three-coordinate measuring machine (CMM), metallographic analyzer, impact test machine, tensile testing machine, hardness tester, magnetic particle inspection, and ultrasonic testing.
Equipped with horizontal machining centers, CNC machining centers, bench drills, vertical and rocker arm drilling machines, milling machines, grinders, planers, and CNC lathes.
