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Duplex Welded Pipe

The Specialty Pipe and Tube division of Penn Stainless Products carries both stock and nonstandard welded pipe in duplex alloys in both light-gauge and heavy-wall thickness.

  • Custom sizes and lengths available
  • Large inventory of sheet and plate products makes Rapid Delivery of custom orders possible
  • Extensive list of value added services for duplex welded pipe
  • Welded pipe per customer specification
  • Extensive Processing Services and Testing Services

Made-to-Order Duplex Welded Pipe Capability Overview

Outside Diameter Range for Duplex Pipe

Pipe diameters can be produced from 4″ OD thru 144″ OD. More Info Get a Quote

Wall Thickness Range for Duplex Pipe

Depending on the diameter of the pipe and the type of duplex, pipe wall thicknesses can range from .010″ to 3″. More Info Get a Quote

Lengths for Duplex Pipe

Duplex pipes up to 60′ long are possible depending on the nominal pipe size, the wall thickness and the material type. Butt welding may be required to produce some longer lengths. More Info Get a Quote

Duplex Grades Available in Welded Pipe

2003 - 2101 - 2205 - 2304 - 2507 - Zeron 100 More Info Get a Quote

Welded Duplex Pipe Supply Highlights

Custom Orders of Specialty Duplex Pipes in as fast as 1 or 2 weeks.

Penn Stainless stocks an extensive inventory of plate and sheet in some duplex alloys. By utilizing this inventory as the source material at our mill partners, we ensure fast lead times for even for hard to find duplex alloys that have nonstandard wall thicknesses, lengths, or chemistries. Quick turn delivery times vary based on specific product requirements. Get a Quote

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Technical Question?

Large Diameter & Heavy Gauge Welded Pipe

Penn Stainless can supply made-to-order welded pipe up to 144″ diameter with up to 3″ thick walls! We also offer non standard diameters like 7-1/2″ or 9″ for many duplex alloys. Get a Quote More Info Technical Question?

Custom Processing & Quick Delivery of Off the Shelf Duplex Alloys

Our extensive inventory of welded pipe in a variety of sizes and grades enables us to cut, pack and ship your order quickly from a number of conveniently located stocking locations. Get a Quote More Info Technical Question?

Duplex Pipe Cutting Services 

Penn Stainless has in-house tubular cutting services for diameters ranging from 1/16″ to 28″. Products with larger diameters can be cut with our partner pipe and tube mills. More Info Technical Question?

Duplex Pipe Value Added Services

Value added processing services available include polishing, beveling, honing/turning, heat treating and annealing. Tubes can be polished per customer request in #4 polish, #6 polish, #7 polish and/or #8 mirror finish. Some ID Sizes can also be polished. More Info Technical Question?

Testing Services

We can deliver welded pipe that meets any of the following testing requirements: positive material identification, liquid penetrant testing, radiographic testing, ultrasonic testing, charpy impact testing and corrosion testing. More Info Technical Question?

Duplex Pipe Technical Resources

Penn Stainless has over 30 years of technical service and project management experience. Our resources include metallurgists, welding experts, specification developers, a rapid delivery team, and inventory management services. More Info Technical Question?

Duplex Alloy Grades

Duplex 2003

Duplex 2003 lean duplex stainless steel is a molybdenum-enhance, proprietary duplex stainless steel alloy available through ATI metals. More Info Get a Quote

Duplex 2101

LDX 2101 is a duplex (austenitic-ferritic) stainless steel with relatively low contents of alloying elements. The grade has high mechanical strength, similar to that of other duplex grades. Its good corrosion resistance is on par with that of most standard stainless steel grades. More Info Get a Quote

Duplex 2205

 Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. More Info Get a Quote

Duplex 2304

Duplex 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel whose structure is a balance of ferritic and austenitic. It has general corrosion resistance similar or better than Alloys 304L and 316L but with yield strength nearly double that of austenitic stainless steels.  More Info Get a Quote

Duplex 2507

Duplex 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. More Info  Get a Quote

Please contact Penn Stainless, or visit the inventory tab on our Stainless welded pipe for an overview of our Duplex welded pipe inventory.

Duplex Welded Pipe Specifications

ASTM A790

The specification discusses seamless and straight-seam welded ferritic/austenitic steel pipe for general corrosive service, with special emphasis on resistance to stress corrosion cracking.  More Info Technical Question?

ASTM A928

This specification discusses the requirements for ferritic/austenitic (duplex) stainless steel pipe that is electric fusion welded with addition of filler metal suitable for corrosive service.  More Info Technical Question?

Call us at 1-800-222-6144 for more information