Engineered for excellence, designed for reliability.
In the rapidly evolving landscape of global manufacturing, JUNLONG Machinery Co., Ltd. stands at the intersection of traditional craftsmanship and AI-driven precision. Founded in 2014 in Weifang, Shandong, our facility spans 60,000 square meters, housing a sophisticated production ecosystem capable of delivering 20,000 tons of precision castings annually.
Our expertise covers the entire spectrum of high-performance metallurgy, including carbon steel, alloy steel, and stainless steel. With a dedicated team of over 200 professionals and 30+ senior engineering technicians, we provide more than just parts; we provide high-integrity mechanical solutions that empower global industries.
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Bridging the gap between complex design and structural integrity.
Transitioning from standard ASTM grades to high-entropy alloys and localized customized melts. We utilize advanced physical and chemical analysis to ensure metallurgical stability at the atomic level.
Leveraging generative design to minimize weight while maximizing load-bearing capacity. Our investment casting process allows for "impossible" geometries that CNC machining cannot achieve alone.
Implementing closed-loop wax reclamation and energy-efficient induction melting to meet global ESG (Environmental, Social, and Governance) procurement standards.
Global Tier-1 suppliers are shifting toward Value-Added Manufacturing. JUNLONG serves as a single-point responsibility partner, offering integrated mold design, precision casting, CNC machining, and surface treatment.
Why industry leaders choose JUNLONG for mission-critical parts.
From wax pattern injection to 5-axis CNC machining, everything is managed in-house.
Spectrometer analysis, Magnetic Particle Inspection (MPI), and CMM dimensional verification.
Serving Automotive, Rail, Construction, and Petroleum industries across three continents.
Rapid prototyping services that reduce time-to-market for complex mechanical components.
High-strength brake levers, transmission components, and turbocharger housings using heat-resistant alloy steel.
Safety-critical railway suspension parts and structural brackets designed for extreme vibration resistance.
Precision cast pump bodies and valve accessories with internal corridors that standard machining cannot replicate.
Heavy-duty wear parts for excavators and harvesters using impact-resistant carbon steel.
Corrosion-resistant stainless steel castings (304/316) for offshore and deep-sea environments.
Aesthetic and structural high-precision components for modern infrastructure projects.
Answering technical questions for procurement and engineering teams.
A: Our investment casting process follows ISO 8062-3 standards. Typically, we achieve CT4-CT6 linear tolerances, significantly reducing the need for secondary machining compared to sand casting.
A: For high tensile strength and toughness, 4140 or 4340 alloy steels are preferred. For corrosion resistance with structural integrity, we recommend CF8M (316) stainless steel.
A: We utilize ultrasonic testing (UT) and X-ray inspection for critical components to ensure zero internal porosity or inclusions, vital for aerospace or automotive safety parts.
A: Prototype molds can be completed in 2-3 weeks, while production tooling typically takes 4-6 weeks depending on geometry complexity.
We adhere to IATF 16949 standards for automotive excellence and ISO 9001 for general quality management.
Reliable manufacturing for diverse mechanical applications.
From concept to finished component, JUNLONG Machinery delivers the precision your project demands. Reach out today for a technical consultation and quote.
Contact Engineering Team
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