OEM Precision Casting Automotive Parts Manufacturer

Advanced Investment Casting Solutions & High-Performance Components for Global Automotive Leaders. Engineered for Precision, Built for Durability.

Macro Industry Solutions: The Evolution of Precision Casting

Driving the future of automotive engineering with sustainable and lightweight manufacturing.

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Lightweighting Strategies

In the era of Electric Vehicles (EVs), reducing weight is paramount for battery efficiency and range. Our precision casting technology allows for the creation of complex, thin-walled components in alloy steel and aluminum that maintain structural integrity while significantly reducing overall vehicle mass.

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Sustainable Manufacturing

Modern automotive supply chains demand ESG compliance. JUNLONG Machinery integrates sustainable practices by recycling metal scrap, utilizing energy-efficient automated casting lines, and minimizing waste through high-precision mold design, reducing the carbon footprint per part produced.

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Supply Chain Resilience

As a global Tier-1 and Tier-2 supplier, we provide more than just parts. Our solutions include just-in-time delivery, buffer stock management, and complete vertical integration from mold design to final surface treatment, ensuring your production lines never halt.

Junlong Factory

JUNLONG Machinery: A Global Precision Casting Leader

Founded in 2014 and located in Weifang, Shandong, JUNLONG Machinery Co., Ltd. has grown into a premier destination for high-tech precision castings. Our 60,000 square meter facility is equipped to handle the most demanding specifications in carbon steel, alloy steel, and stainless steel.

With an annual production capacity of 20,000 tons, we serve as a critical partner for the automotive, rail, and heavy machinery industries worldwide, exporting to markets in Germany, the USA, Italy, and Canada.

2014 Founded
60,000 Sq. Meters
20,000 Tons/Year
200+ Employees

Global Reach & Industrial Footprint

Connecting Chinese manufacturing excellence with global automotive standards.

International Market Integration

The global automotive casting market is undergoing a seismic shift towards high-complexity, low-tolerance parts. As a specialized OEM precision casting automotive parts manufacturer, we meet this demand by adhering to international standards such as IATF 16949. Our products are integrated into vehicle systems for major brands across Europe and North America.

  • Export-grade quality control for the USA and Germany.
  • Multi-lingual technical support for global procurement teams.
  • Cross-border logistics expertise ensuring timely delivery.
Global Supply Chain

Technical Roadmap: The Future of Casting

Investment in R&D and AI-driven manufacturing technologies.

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AI-Enhanced Quality Control

Our roadmap includes the integration of AI-based visual inspection systems that detect microscopic surface defects and internal porosities with 99.9% accuracy, ensuring "Zero Defect" delivery for critical automotive safety components.

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Advanced Alloy Development

We are actively researching new stainless steel and carbon steel alloys that offer higher thermal resistance for next-generation turbocharger housings and exhaust manifolds, meeting the extreme requirements of modern combustion engines.

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3D Printing for Mold Making

By leveraging 3D printed sand molds and wax patterns, we reduce the prototyping phase from weeks to days, allowing our automotive clients to iterate designs rapidly and shorten their Time-to-Market (TTM).

Localized Application Scenarios

Specific casting solutions tailored for diverse industrial environments.

Automotive Casting

Automotive & Trucking

Engine brackets, valve parts, and transmission components designed for high-vibration and high-temperature localized environments.

Petroleum Casting

Oil & Gas Infrastructure

Corrosion-resistant ESP cable protectors and centralizers optimized for deep-sea and shale gas extraction scenarios.

Construction Casting

Heavy Construction

Alloy steel castings for excavators and loaders, built to withstand extreme mechanical stress in mining and road construction.

Precision Manufacturing Facilities

Equipped with internationally advanced automated production and analysis equipment.

Equipment 1 Equipment 2 Equipment 3 Equipment 4 Equipment 5 Equipment 6 Equipment 7 Equipment 8

Integrated Machining Capabilities

Our comprehensive workshop includes horizontal and vertical machining centers, CNC lathes, milling machines, and grinders. We provide a full industrial chain service—from raw casting to finished precision components ready for assembly.

Local Support & Global Compliance

Meeting the strictest quality standards of the global automotive industry.

Reliability in the automotive sector is non-negotiable. JUNLONG Machinery has secured world-class certifications to ensure every part meets the rigorous safety and performance criteria of our partners.

ISO 9001 TS 16949 UL Certificate

Our Quality Promise:

  • ISO 9001:2015 Quality Management Systems.
  • IATF 16949:2016 Automotive Quality Standard Compliance.
  • UL Certified manufacturing processes.
  • Full physical and chemical analysis for every material batch.

Technical Q&A / FAQ

Insights into precision casting processes and procurement.

What materials do you specialize in for automotive casting? +
We specialize in carbon steel (for structural strength), alloy steel (for toughness and wear resistance), and stainless steel (for corrosion and heat resistance), common in exhaust and valve systems.
What are the dimensional tolerances for your precision castings? +
Using advanced lost wax investment casting, we typically achieve linear tolerances within CT4-CT6 standards, significantly reducing the need for extensive secondary machining.
Do you offer one-stop machining after casting? +
Yes. We provide a complete industrial chain integrated manufacturing service, including mold design, casting, CNC machining, and surface treatments like painting or plating.
How do you ensure quality for high-volume automotive orders? +
We implement a strict quality control system involving spectral analysis, magnetic particle inspection, ultrasonic testing, and CMM dimensional checks to ensure 100% compliance with client blueprints.

Ready to Start Your Next Casting Project?

Contact our engineering team today to receive a detailed quote. Our company will continue to strengthen R&D for new products and technologies, striving to remain your world-class precision casting partner.

Request a Quote Now