Custom Investment Casting Mechanical Parts Supplier & Factory

High-Precision Lost Wax Casting Solutions for Global Heavy Industries – Engineering Excellence Since 2014

Experience & Expertise

Industrial Authority in Precision Casting

JUNLONG Machinery Co., Ltd., established in 2014 in Weifang, Shandong, represents the pinnacle of Chinese precision manufacturing. Spanning a 60,000 m² state-of-the-art facility, we bridge the gap between complex engineering concepts and physical reality. Our annual production capacity of 20,000 tons serves the most demanding industries worldwide.

As an integrated supplier, we combine investment casting (lost wax process) with advanced deep machining to deliver finished components that meet the strictest tolerance requirements of German, American, and Italian engineering standards.

2014Founded
60K+Sq Meters Area
20KAnnual Tons
200+Expert Employees

The Global Demand for Investment Casting Mechanical Parts

Navigating Macro-Economic Shifts and Technical Requirements in Modern Manufacturing

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Supply Chain Resilience

Post-2023 procurement strategies focus on "Information Gain" and transparency. Global enterprises in the US and Europe are seeking casting partners who offer more than just parts—they require digital traceability, material certification, and logistical reliability. We provide end-to-end support to mitigate supply chain risks.

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Material Innovation

From high-manganese steel for mining to alloy steels for aerospace, the demand for "Super Materials" is rising. Our facility specializes in carbon steel, alloy steel, and stainless steel, ensuring that mechanical properties like tensile strength and fatigue resistance are optimized through controlled cooling and heat treatment.

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Sustainability & ESG

Modern investment casting must adhere to strict environmental standards. JUNLONG Machinery integrates energy-efficient induction furnaces and sand recycling systems to reduce the carbon footprint of every ton of metal poured, helping our clients meet their global sustainability goals.

Technical Roadmap: From Concept to Component

The Science Behind Our High-Precision Manufacturing Process

01

Mold Design (CAD/CAM)

We utilize 3D simulation to predict solidification and prevent defects before the first wax is injected.

02

Wax Injection & Shelling

Automated wax pattern injection ensures consistency across thousands of cycles for high-volume orders.

03

Vacuum Casting

Precision pouring in controlled environments to eliminate porosity and inclusions in the alloy matrix.

04

CNC Deep Machining

Our vertical and horizontal machining centers transform raw castings into high-tolerance finished parts.

Full Industrial Chain Integrated Manufacturing Capabilities

Core Advantages: Seamless connection, controllable quality, shorter lead times. Unlike traditional foundries, JUNLONG Machinery provides a "One-Stop" solution. We handle Mold Manufacturing, Precision Casting, Heat Treatment, CNC Machining, and Surface Treatment (Painting, Zinc Plating, etc.) under one roof. This eliminates the communication costs and quality risks associated with multi-vendor sourcing.

Strategic Industry Solutions

Forging Strong Mechanical Backbones for the World's Infrastructure

Construction & Mining

Forging components for excavators, loaders, and crushers. High-wear parts like manganese steel teeth and alloy bushings are designed to survive the harshest tectonic environments.

Automotive & Transport

Specialized cooling system components, truck chassis parts, and railway couplers. Certified to TS 16949 standards for safety-critical applications.

Agricultural Machinery

Durable components for harvesters, plows, and irrigation systems. We help global ag-tech leaders reduce machinery downtime through superior part longevity.

Petroleum & Energy

Valve bodies, pump impellers, and drilling hardware. Resistant to high pressure and corrosive chemical environments found in offshore and onshore sites.

Architectural Hardware

Precision-cast stainless steel fittings for modern high-rises. Combining aesthetic surface finishes with structural load-bearing reliability.

Uncompromising Quality Assurance

E-E-A-T Principle Applied Through Rigorous International Standards

Our commitment to reliability is backed by a comprehensive quality control system. Every production detail is monitored, ensuring 100% compliance with client specifications. Our "Zero-Defect" philosophy is supported by:

  • Spectrometers for precise chemical analysis of alloys.
  • X-Ray and Magnetic Particle Inspection (MPI) for internal integrity.
  • Tensile and Impact Testing for mechanical performance verification.
  • CMM (Coordinate Measuring Machine) for dimensional accuracy down to microns.

JUNLONG has obtained ISO 9001, TS 16949, and UL certifications, reflecting our status as a trusted global manufacturer.

Our Advanced Manufacturing Fleet

Investing in Tomorrow's Industrial Technology

Procurement Q&A: Investment Casting Insights

Expert Answers for Global Sourcing Managers

Q1: What are the primary advantages of investment casting over sand casting for mechanical parts?
Investment casting (lost wax) offers significantly better surface finish (Ra 3.2-6.3) and tighter dimensional tolerances (ISO 8062 CT4-CT6). This reduces or eliminates the need for expensive secondary machining, saving costs on complex geometries.
Q2: What is your typical lead time for a custom OEM project?
For new products, mold design and prototyping typically take 3-4 weeks. Once approved, mass production usually spans 4-6 weeks depending on volume and finishing requirements. We offer expedited services for strategic global partners.
Q3: Do you provide localized support for international clients?
Yes, we serve clients in Germany, USA, Italy, and Canada with full logistics support, DDP/CIF shipping options, and English-speaking engineering consultations to ensure seamless technical communication.
Q4: Can you cast components from specific proprietary alloys?
Absolutely. Our lab verifies the chemical composition of each batch. We work with various grades of Carbon Steel (WCB, WCC), Alloy Steel (8620, 4140), and Stainless Steel (304, 316, 17-4PH) according to ASTM, DIN, or JIS standards.

Ready to Elevate Your Supply Chain?

Partner with JUNLONG Machinery for world-class precision casting and deep processing services. Let our engineering team optimize your components for performance and cost.

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