HEAVY-DUTY WELDING & INDUSTRIAL METAL FABRICATION

ISO-CERTIFIED HEAVY-DUTY WELDED ASSEMBLIES AND STRUCTURAL METAL FABRICATIONS

Leonhardt Manufacturing delivers heavy-duty welded assemblies and industrial metal fabrications engineered for demanding structural, industrial, and production environments.

From oversized tubular structures to complex multi-part assemblies, we deliver integrated tube and sheet metal solutions engineered for high loads, vibration, and continuous operation.

As an ISO-certified contract manufacturer based in Hanover, Pennsylvania, Leonhardt combines advanced tube forming, precision welding, CNC machining, and sheet processing capabilities to produce durable, repeatable assemblies at scale.

Our rigorous quality control systems and lean manufacturing practices support industrial manufacturers nationwide.

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THE LEONHARDT ADVANTAGE

  • Built to customer specifications for materials, tolerances, durability, performance, and cost targets
  • 95,000 sq. ft. manufacturing facility designed for large-scale industrial fabrication
  • Advanced CNC tube bending including compound, multi-radius, and variable-radius forming
  • Integrated tube, sheet metal, stamping, machining, welding, and assembly capabilities
  • ASME-certified welders and documented production standards
  • Lean manufacturing systems that drive efficiency, throughput, and cost control
  • Coordinated supply chain management that simplifies sourcing and reduces total program cost
Discuss your tube bending program with our team →

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APPLICATIONS

LEONHARDT MANUFACTURING SUPPORTS HEAVY-DUTY FABRICATION PROGRAMS ACROSS:
  • Industrial equipment and machinery
  • Lifting and material handling systems
  • Structural and load-bearing assemblies
  • Infrastructure and construction equipment
  • Power generation and energy systems
  • Data center and AI infrastructure systems
  • Transportation and mobility platforms
  • Defense and mission-critical systems

Explore related capabilities in tube bending, metal fabrication, and contract manufacturing.

Frequently Asked Questions
Can you handle large and oversized assemblies?
Yes. Our 95,000 sq. ft. facility is designed for large-scale fabrication with dedicated work cells, open floor space, and material handling systems capable of supporting oversized, high-weight, and long-span assemblies.
Do you work with both tube and sheet metal fabrication?
Yes. Our integrated capabilities include precision tube forming, sheet metal processing, welding, machining, forming, and assembly. This allows us to support complex fabrications that combine tubular and sheet metal components within a single production workflow.
What quality standards support your heavy-duty manufacturing?
Leonhardt Manufacturing operates under ISO-certified quality systems with documented production processes, controlled inspection methods, and rigorous quality control procedures. These systems ensure repeatability, structural integrity, and consistent performance across production runs.
What production volumes do you support?
We support repeatable production runs and ongoing manufacturing programs requiring consistent output, dimensional stability, and dependable delivery. Our workflows are designed for production-scale fabrication rather than one-off prototype work.
What information is needed to quote a heavy-duty fabrication project?
The fastest quotes come from a drawing (PDF) and/or 3D model (STEP), material specifications, finish requirements, estimated volumes or run sizes, target lead times, and any inspection or compliance requirements.
Where is Leonhardt Manufacturing located?
Leonhardt Manufacturing is headquartered in Hanover, Pennsylvania, supporting industrial and equipment manufacturers across the United States. Freight coordination and routing requirements are aligned during program onboarding.
How do we get started?
Send your drawings, models, and project requirements through your preferred contact method or our RFQ form. Our team will review feasibility, clarify open items, and provide next steps for quoting and production planning.

FEATURED JOB STORY

Industrial Crane Manufacturer Relies on Leonhardt for Welding and Manufacturing

When a leading industrial crane manufacturer required a partner to fabricate large structural jib assemblies, Leonhardt was selected for its proven production capability and established performance as a trusted supplier. Our documented quality systems, disciplined execution, and heavy-duty fabrication capacity ensured reliable delivery throughout the program.

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