Top 5 Stainless Steel Flange Manufacturers in USA

Finding quality ss pipe flange suppliers in the USA is crucial for project success. Local manufacturers offer faster delivery and better support.

The American flange factory sector continues to grow stronger. These companies deliver consistently through advanced manufacturing and strict quality control.

With the flange market reaching USD 11.66 billion by 2037, industrial flanges manufacturers keep improving their capabilities.

Let’s examine what these leading ss flange manufacturers offer your projects.

Leading Industrial Stainless Steel Flanges Manufacturers in the US

Here’s an overview of the leading flange producers in America:

1. Longan Flange

As a leading ss flange manufacturer, Longan Flange operates 16 high-precision machining centers and over 100 CNC lathes. 

Our flange factory specializes in weld neck, slip-on, blind, and lap joint flanges for industrial applications. 

Every flange undergoes spectral detection and durability testing to meet international standards. 

Our automated production ensures consistent quality across all flange types and specifications.

Location: Wenzhou, China 

Founded: 2011

2. CAB

As trusted pipe flange manufacturers, CAB maintains America’s largest inventory of AWWA flanges. 

Since their founding, the company has helped shape AWWA flange specifications that set industry standards. 

Their custom machining capabilities handle large-diameter flanges for specialized applications. 

This industrial flanges manufacturer serves critical sectors including wastewater, oil and gas, and power generation.

Location: Buford, Georgia, USA 

Founded: 1982

3. Piping Supplies Inc.

This established pipe flange supplier has manufactured precision-machined ANSI flanges for over six decades. 

Their state-of-the-art CNC technology ensures exceptional accuracy in every component.

The company specializes in weld neck, slip-on, blind, and lap joint flanges for demanding applications.

Piping Supplies’ DFAR-compliant production meets strict military and industrial standards.

Location: Williamstown, New Jersey, USA 

Founded: 1960

4. Federal Flange

One of the leading flange manufacturers in Houston, Federal Flange produces ANSI, API, and custom-engineered solutions. 

Their integrated production facility combines precision machining with rapid turnaround capabilities. 

Every flange undergoes rigorous testing to meet API 6A specifications. 

The company has become a preferred flanges Houston supplier for global energy and petrochemical sectors.

Location: Houston, Texas, USA 

Founded: 1975

5. Texas Flange

Texas Flange manufactures flanges in carbon steel, stainless steel, and specialty alloys.

Their in-house capabilities include advanced welding, machining, and comprehensive quality control.

Production ranges from standard ½” flanges to large custom-engineered solutions.

The company’s expertise spans petrochemical, process, and waterworks applications.

Location: Pearland, Texas, USA 

Founded: 1986

How We Selected These Manufacturers

When evaluating flange manufacturers in the USA, we focused on factors that directly impact industrial project success.

• Quality certifications: Manufacturers must hold current ASME, API, and ISO certifications, with documented quality control processes and material traceability.
• Production capacity: Facilities equipped with modern CNC machines and automated testing systems capable of handling large-volume orders with consistent quality.
• Material Selection: Stock availability in carbon steel, stainless steel, and specialty alloys.
• Technical support: In-house engineering teams capable of assisting with specifications, custom designs, and technical documentation.
• Industry experience: Minimum of 10 years serving major industrial sectors with verifiable project references.

Conclusion

Quality flanges make all the difference in industrial projects. These manufacturers have proven they can deliver what contractors need.

While each company brings unique strengths, Longan Flange’s 16 machining centers and comprehensive testing protocols demonstrate their commitment to excellence. Choose manufacturers based on your specific project requirements—quality control, testing capabilities, and proven reliability matter more than company size.