In the demanding environment of modern naval architecture and commercial maritime engineering, the integrity of every component translates directly into safety and efficiency. As a leading OEM shipbuilding precision casting components manufacturer, JUNLONG Machinery Co., Ltd. leverages over a decade of metallurgy expertise to produce components that withstand the most corrosive saline environments and high-pressure mechanical stresses.
Our "Lost Wax" investment casting process provides significant Information Gain for procurement officers and marine engineers: it allows for the creation of complex geometries with thinner walls and higher strength-to-weight ratios compared to traditional sand casting. This technological edge is critical for reducing vessel deadweight and improving fuel economy, aligning with the International Maritime Organization's (IMO) decarbonization goals.
Equipped with internationally advanced automated casting production facilities and comprehensive physical and chemical analysis equipment, we enhance manufacturing efficiency and product quality stability.
Specializing in corrosion-resistant alloys, stainless steel (316L/Duplex), and high-strength alloy steels specifically formulated for maritime endurance.
Our processes are backed by ISO 9001, TS 16949, and UL certifications, ensuring every component meets the stringent safety standards of global classification societies.
JUNLONG Machinery Co., Ltd. was founded in 2014. Located in Weifang, Shandong, the company serves as a high-quality casting supplier integrating precision casting and deep processing. With over 30 engineering technicians, we serve global industry leaders in Europe and America, delivering solutions that go beyond simple manufacturing.
Our Mission: To provide high-precision metal components that drive the high-tech industries of automotive, rail, and shipbuilding through innovation and uncompromising quality control.
The global shipbuilding industry is increasingly looking toward China for high-precision components. Why? Because the ecosystem in Weifang, Shandong, offers a unique convergence of raw material accessibility, advanced CNC machining infrastructure, and specialized labor.
The transition toward "Green Shipping" is creating a surge in demand for lightweight, high-strength castings for alternative fuel propulsion systems (LNG/Ammonia). Furthermore, the rise of autonomous vessels requires high-precision sensor housings and actuator components that can only be produced through advanced investment casting techniques.
Casting of complex impeller blades and thruster housings that require perfect hydrodynamic balance and resistance to cavitation.
Corrosion-resistant housings for ballast water treatment systems and fire-fighting pumps on large container vessels.
High-load bearing components for winches, cranes, and anchoring systems made from high-toughness alloy steel.
Precision exhaust manifolds and fuel injection parts for massive marine diesel and dual-fuel engines.
We understand that procurement is not just about the part; it's about the assurance of compliance. JUNLONG provides comprehensive documentation packages including material mill sheets, ultrasonic/X-ray inspection reports, and dimensional inspection records. For our global clients, we offer localized support through:
Meeting IACS (International Association of Classification Societies) requirements and providing support for DNV, ABS, and Lloyd’s Register certifications.
Our engineering team communicates fluently in technical English to ensure there is zero "lost in translation" risk during the prototyping phase.
For strategic partners, we offer localized warehouse solutions in target markets to ensure JIT (Just-In-Time) delivery and reduce supply chain volatility.
Partner with JUNLONG Machinery for uncompromising precision and global-standard maritime components.
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