JUNLONG Machinery Co., Ltd., established in 2014, represents the pinnacle of Chinese manufacturing expertise in lost wax investment casting. Operating from a massive 60,000 square meter facility in Shandong, we have scaled our operations to produce over 20,000 tons of precision components annually.
Architectural hardware is not just about aesthetics; it’s about structural integrity and long-term durability. Our process utilizes advanced carbon steel, alloy steel, and stainless steel (304/316) to create hardware that resists corrosion, handles high load-bearing requirements, and maintains complex geometric precision that traditional machining cannot achieve.
Providing technical information gain for procurement specialists and architects.
Our investment casting process achieves CT4-CT6 tolerances, reducing the need for expensive post-casting machining. Perfect for intricate glass spider fittings and decorative hinges.
Achieving a surface roughness of Ra 3.2 to 6.3 μm straight from the mold. For architectural hardware, this means a superior base for mirror polishing or PVD coating.
Unlike forging, lost wax casting allows for internal cavities and complex undercuts, enabling "organic" architectural designs that are both lightweight and strong.
China remains the world's most robust ecosystem for metal casting. At JUNLONG, we leverage local access to high-grade raw materials and a specialized labor force of over 200 experts, including 30+ senior engineers. This allow us to offer:
The rise of IoT in buildings requires hardware with integrated sensors. Casting allows for precision housings for electronic locks and automated door systems.
Shifting toward recycled stainless steel and energy-efficient induction melting to meet global ESG requirements for green building certifications like LEED.
Use of Duplex Stainless Steel in coastal architectural hardware to prevent "tea staining" and chloride stress corrosion in marine environments.
Heavy-duty hinges and locking mechanisms for climate-controlled greenhouse systems.
Precision door components and structural brackets for commercial vehicles and rail.
High-load bearing connectors for steel structures and modular building assemblies.
Meeting international standards: ISO 9001, TS 16949, and UL Certifications.
From initial design to final surface treatment, our internal supply chain ensures 100% traceability. Our machining center features horizontal/vertical CNC centers, lathes, and milling machines specifically tuned for the unique hardness of investment cast alloys.
For new designs, mold development usually takes 2-3 weeks. Mass production follows within 4-6 weeks depending on the complexity and volume of the order. We offer expedited services for urgent global projects.
Stainless Steel 316 is highly recommended for coastal or high-humidity areas due to its superior molybdenum content which prevents pitting corrosion. Carbon steel with hot-dip galvanizing is a cost-effective alternative for structural components.
Every heat is tested using an optical spectrometer. We provide 3.1 Material Certificates and can perform Tensile, Hardness, and Impact testing in our internal laboratory to meet international ASTM or EN standards.
Yes, our flexible production lines allow us to support everything from prototype quantities for boutique architectural projects to high-volume 20,000-ton annual contracts for global distributors.
Reduce your overhead by outsourcing casting and machining to a single-source supplier. Our TS 16949 certification ensures we meet the rigorous quality standards of the automotive and heavy machinery industries.
Transform visionary designs into reality. We work directly with your CAD files to produce structural connectors, decorative facades, and ergonomic door hardware that standard catalogs don't offer.
Stabilize your supply chain with a partner that has 60,000m² of capacity. We mitigate risk through consistent quality, transparent communication, and deep experience in international trade regulations.
Connect with our engineering team today for a comprehensive quote and technical consultation.
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