Choosing a custom metal enclosure manufacturer requires a close look at how well a potential partner can meet your product requirements and support your manufacturing needs. Experience with similar applications is important, but so is the engineering expertise and production resources to deliver consistent results.

A qualified metal fabrication supplier should demonstrate relevant industry experience,  a dependable material supply chain, and the in-house capabilities necessary to support the project from design through production.

Maysteel recommends focusing on three specific areas when evaluating custom metal fabricators: industry expertise and proven success, footprint/supply chain strength, and in-house capabilities. 

Let’s take a closer look at each area.

1. How Do You Evaluate Industry Expertise and Proven Success?

A custom metal enclosure manufacturer with industry experience can provide valuable insight into common design and production challenges. Familiarity with similar products and applications can also help identify potential manufacturing issues early, when adjustments are easier to make.

Asking about previous projects is a useful starting point, but examples of completed work offer a better indication of whether a fabricator has the experience your project requires.

Questions to ask on industry expertise & proven success

If a manufacturer has successfully fabricated a custom enclosure line in your industry, they understand common challenges and how to overcome them. Ideal custom sheet metal manufacturers know precisely where they can provide value and success because they have hands-on experience building the product. You can leverage this expertise to increase your speed to market and minimize surprises in the manufacturing process.

Market Knowledge

  • What experience does the manufacturer have producing custom metal enclosures for your industry?
  • What is the manufacturer’s market history as a custom fabricator?
  • Can the manufacturer provide examples of comparable products or applications?
  • Does the manufacturer have documented engineering and contract manufacturing experience relevant to your product?
  • What types of metal does the manufacturer work with?
  • Can the manufacturer support applicable National Electrical Manufacturers Association (NEMA) standards and any necessary UL certification?
  • How does the manufacturer stay current with developments that affect your industry?

Should your application require environmental protection or electrical enclosure certification, ask the manufacturer to verify how it is compliant with any applicable requirements. NEMA 250, UL 50, and UL 50E address different aspects of enclosure performance, and the required certification or documentation will depend on the application.

Current Customers

Does the manufacturer currently serve customers with similar enclosure requirements? Relevant experience may involve:

  • The same industry
  • A comparable product line
  • Products with similar performance requirements

Ask for manufacturing examples that demonstrate how the manufacturer addressed challenges comparable to those anticipated in your project. Previous work can provide a useful indication of how well a metal fabrication supplier understands your expectations.

Questions to ask on supply chain strength/ footprint

A manufacturer’s production footprint and supply chain relationships can influence its ability to support current demand and accommodate future growth. When choosing a metal fabricator, consider how manufacturing locations also align with your distribution needs and whether the supplier has the resources to respond to changes in production volume.

Supply chain management also deserves careful evaluation in fabricator selection. Ask candidates how:

  • Constraints are proactively anticipated
  • Risks are communicated to customers
  • Production schedules are managed when supply chain issues occur

Established supplier relationships and coordinated purchasing practices can help manufacturers manage material availability and changing sourcing conditions.

Efficient custom enclosure manufacturers will have likely developed a streamlined process of coordinating activities with buyers and sellers within their supply chain. The significant difference between a managed supply chain and an unstructured one is focusing emphasis on trusted relationships. A streamlined process allows for better communication, pricing, and more efficient coordination.

Questions to ask include:

  • Do they have manufacturing facilities to match your current and future needs?
  • How do the manufacturer’s locations align with your markets and shipping requirements?
  • Can the manufacturer accommodate increased production volumes or changes in demand?
  • How does the manufacturer manage material availability and potential supply disruptions?
  • What processes are in place to address sourcing challenges, including changing tariffs or material costs?
  • Is the manufacturer willing to invest in supporting the supply chain growth of their customers?

A manufacturer should be able to explain how its production footprint and supply chain practices support customer requirements. Understanding capacity requirements upfront can also determine if the supplier is equipped to support a long-term manufacturing relationship.

How Do You Evaluate In-House Manufacturing Capabilities?

In-house manufacturing capabilities are another important consideration as you evaluate custom metal enclosure manufacturers. A fabricator may have experience producing similar products but lack the equipment or engineering resources necessary to support more complex designs or higher production volumes.

Manufacturing capabilities should be evaluated in relation to your specific fabrication requirements. Engineering support, available production processes, and quality management practices all influence how successfully a manufacturer can move a design into repeatable production.

Manufacturing Flexibility:

Custom enclosure requirements can change during development or production, and this requires manufacturing flexibility. 

Manufacturers with engineering resources and experience in design for manufacturability (DFM) may be able to identify opportunities for simplifying fabrication or resolving design challenges before they affect production.

Ask potential suppliers:

  • Do they add value beyond meeting your price expectations?
  • Are they able to accommodate different product lines and demand schedules?
  • How easy is it for them to implement design changes?
  • Are they able to build prototypes?
  • Are they willing to collaborate with your in-house team?
  • Can they review designs for manufacturability and recommend modifications when appropriate?

Early collaboration between engineering and manufacturing can be particularly valuable for custom sheet metal enclosures. Designs involving material selection or fabrication methods may affect production efficiency, making it important to understand the manufacturer’s engineering capabilities before finalizing a design. 

Custom Manufacturing Quality

Consistent quality depends on documented processes and the ability to verify that finished components meet project specifications. A manufacturer’s quality management system should integrate quality requirements into the production process.

Questions to consider include:

  • What quality management standards does the manufacturer follow, and does it hold applicable certifications, such as ISO 9001? 
  • Do the manufacturer’s quality standards align with your own?
  • How does the manufacturer verify dimensional requirements and other critical enclosure specifications?
  • What inspection or documentation processes are available to support your project?

Quality expectations should be established before production begins, particularly when enclosures have specific dimensional tolerances or performance requirements.

Control of Production:

The more manufacturing processes occur in-house, the more control a fabricator has over production. Available equipment and manufacturing resources should align with the complexity of the enclosure and anticipated production volumes.

Ask the following questions:

  • What capabilities do they have in-house?
  • Can they provide an equipment list?
  • Do they have a focus on safety?
  • Do they have an engineering team on staff to collaborate with manufacturing?
  • Which manufacturing operations are handled internally, and which are outsourced? 
  • How does the manufacturer coordinate production and manage scheduling requirements?
  • Can the manufacturer’s existing equipment and capacity support future increases in demand?

A review of manufacturing capabilities should go beyond equipment availability. How the fabricator manages production and coordinates engineering with manufacturing provides a more complete picture of its ability to support your project.

Confidently Choose a Custom Metal Enclosure Manufacturer 

Starting the search for a custom enclosure fabricator can be challenging to navigate through the sea of options, and it is necessary to ask these questions upfront, as well as other non-negotiables your team has. The fabricators who fit your needs won’t be afraid to answer the tough questions.

Maysteel combines engineering expertise with custom metal fabrication abilities to support manufacturers across a wide range of industries, including data centers. Our team works with customers to develop and produce custom metal enclosures suited to their specific applications.

Looking for a fabrication partner for your custom enclosure needs? Explore Maysteel’s custom enclosure solutions or contact our team to discuss your project requirements.