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Backup Stainless Steel Pipe Flanges

MTS Forge manufactures precision backup stainless steel pipe flanges engineered for demanding industrial environments. From commercial nuclear to chemical processing, our flanges deliver unmatched corrosion resistance, dimensional accuracy, and full material traceability — built to exact specifications with decades of metallurgical expertise and American craftsmanship behind every component.

Backup stainless steel pipe flanges manufactured by MTS Forge

Our Backup Stainless Steel Pipe Flange Services

Comprehensive flange manufacturing and support services built for critical industrial applications requiring precision and full traceability.

Flange Manufacturing

Production of backup stainless steel pipe flanges up to 14 inches, manufactured under a stringent Quality Assurance Program with complete traceability for nuclear, chemical, and power generation sectors.

Special Forgings

Specialty stainless steel forgings including 316-L grade for Section III applications, conforming to Mil I 45208, NCA 3800, and Mil Q9858 quality standards for high-reliability environments.

Heat Treatment

In-house normalizing heat treatment for forged flange components, producing refined grain structures with consistent mechanical properties including improved tensile strength and enhanced machinability.

Rough Machining

Post-forging rough machining services that bring flange components to near-net shape, removing excess material and surface irregularities to reduce lead times and eliminate the need for a separate machining vendor.

Custom Forgings

Tailored backup flange solutions forged to exact customer specifications in stainless steel and high-performance alloys, combining advanced technology with time-honored American craftsmanship for superior durability.

Contour Forging

Contour forging of flanges and related components in materials including duplex stainless steels, enabling complex geometries with consistent mechanical performance across aerospace, nuclear, and industrial applications.

Full Traceability Guaranteed

Precision Stainless Steel Flanges Built for Critical Applications

MTS Forge's backup stainless steel pipe flanges are engineered to perform in the most demanding conditions — from commercial nuclear facilities to chemical processing plants and power generation systems. Manufactured at our Coatesville, PA facility, every flange is produced under a comprehensive Quality Assurance Program with complete material traceability. Our metallurgical expertise ensures dimensional precision, corrosion resistance, and compliance with the tightest industry standards, delivering components ready for immediate integration or downstream processing.

Stainless steel pipe flange manufactured to precise industrial specifications
The MTS Forge Difference

Why Choose MTS Forge?

Four decades of metallurgical expertise and American manufacturing excellence set us apart.

Metallurgical Expertise

Founded by metallurgists, our team applies deep materials science knowledge to every stainless steel flange we produce.

Rigorous Quality Assurance

Our QA program meets Mil I 45208, NCA 3800, and Mil Q9858 standards, ensuring complete traceability for nuclear and defense clients.

In-House Capabilities

From forging and heat treatment to rough machining and tooling design, we handle every production step at our Coatesville, PA facility.

Made in America

Every backup stainless steel flange we produce is manufactured domestically, supporting critical supply chains across Pennsylvania and beyond.

Meet the MTS Forge Team

Experienced metallurgists and forging specialists dedicated to precision and quality.

Stephen Carr, Co-Founder of MTS Forge

Stephen Carr

Co-Founder

Stephen Carr co-founded Manufacturing & Technical Services, Inc. (MTS Forge) in 1986 alongside Edward Waddell, driven by a shared vision to deliver high-quality forged solutions to America's most demanding industries. With a strong metallurgical background and extensive hands-on knowledge of forging practices, Stephen has been instrumental in shaping MTS Forge's technical capabilities and quality culture. Under his leadership, the company developed robust Quality Assurance Programs compliant with Mil I 45208 and NCA 3800, enabling MTS Forge to serve commercial nuclear, defense, aerospace, and power generation clients. His commitment to precision, traceability, and craftsmanship continues to define the standard for every carbon steel forged flange that leaves the Coatesville, PA facility.

Edward Waddell, Co-Founder of MTS Forge

Edward Waddell

Co-Founder

Edward Waddell co-founded MTS Forge in 1986, bringing a strong metallurgical background and a wealth of forging knowledge that has guided the company's growth over nearly four decades. Edward played a foundational role in establishing the principles of quality and service that remain central to MTS Forge's identity today. His technical expertise spans a wide range of forging processes and materials, enabling MTS Forge to serve industries from commercial nuclear and defense to power generation and chemical processing. Edward's vision helped build a facility in Coatesville, PA capable of delivering carbon steel forged flanges, special forgings, and custom components with the precision and traceability that critical industry sectors demand.

Frequently Asked Questions

What is a backup flange?

A backup flange (also called a backing flange) is a flat ring used in conjunction with a stub end or lap joint flange. It slides over the pipe and sits behind the stub end, providing the bolting surface to connect two pipe sections. This design allows the flange to rotate freely, making bolt-hole alignment easier during installation without requiring the costly flange material to contact the process fluid.

What are stainless steel flanges used for?

What sizes of stainless steel pipe flanges does MTS Forge manufacture?

What stainless steel grades are available for backup flanges?

What quality standards do your stainless steel flanges meet?

Does MTS Forge offer heat treatment for forged flanges?

Can MTS Forge produce custom backup flanges to specific drawings or specifications?

Which industries does MTS Forge serve with its stainless steel flange products?

Have More Questions About Our Flanges?

Speak directly with our metallurgical experts for technical guidance or a custom quote.

Certified & Compliant

Awards and Recognition

Mil I 45208 certification badge

Mil I 45208

Military inspection system standard for quality assurance.

NCA 3800 nuclear quality assurance certification badge

NCA 3800

Nuclear quality assurance program certification.

Mil Q9858 quality program certification badge

Mil Q9858

Military quality management system program standard.

Get a Quote on Backup Stainless Steel Pipe Flanges

Fill out the form below with your flange specifications, material requirements, and quantity. Our metallurgical team will review your inquiry and respond with technical guidance and pricing.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (610) 857-3500. You can also send us a quick email at Fmicale@mtsforgepa.com.