Duplex Stainless Steel Pipes Supplier in the USA 

Dexter Sales Inc. is a trusted supplier of stainless steel and duplex steel tubes, pipes, and plates for a wide range of applications, including heat exchangers, boilers, and condensers. We offer a broad range of products that meet ASME and ASTM standards, with full material traceability and mill test certificates.

Our Product Range

We supply seamless and welded tubes, U-bend tubes, finned tubes, and companion pipe fittings, sourced directly from ISO-certified mills worldwide. Our stainless and duplex steel range covers grades from 304/L and 316/L to Duplex 2205 and Super Duplex 2507, suitable for general corrosion resistance and aggressive environments.

Available ASME/ASTM Specifications

Our products meet various ASME and ASTM specifications, including:

• Seamless tubes: ASME/ASTM SA/A 213, SA/A 268, SA/A 312, SA/A 789
• Welded tubes: ASME/ASTM SA/A 249, SA/A 269, SA/A 312
• Duplex pipes: ASME/ASTM SA/A 790, SA/A 928
• U-tubes: ASME/ASTM SA/A 688, with custom bend radii available
• Finned tubes: Helical and longitudinal fins for heat transfer applications
• Plates: ASTM A240, ASTM A480, in stainless and duplex grades

Benefits of Choosing Dexter Sales Inc.

By choosing Dexter Sales Inc. as your duplex stainless steel tube supplier, you can benefit from our exceptional customer service, competitive pricing, and reliable delivery times. We have extensive experience supplying stainless and duplex steel products to industries including power generation, chemical processing, and oil and gas.

Frequently Asked Questions

Q: What is the difference between Duplex 2205 and Super Duplex 2507?

A: Duplex 2205 has a Pitting Resistance Equivalent Number (PREN) of 34+ and is commonly used in chemical processing, heat exchangers, and general industrial applications. Super Duplex 2507 offers a PREN of 42+, providing superior resistance to pitting and crevice corrosion, making it ideal for highly aggressive offshore, marine, and subsea environments.

Q: Do you supply ASME-certified tubes for boiler and heat exchanger applications?

A: Yes. We supply boiler and heat exchanger tubes manufactured to ASME SA213, SA249, SA269, and SA312 specifications. All products are delivered with Mill Test Certificates (MTCs) and complete material traceability documentation to ensure quality and compliance.

Q: Can you supply U-bend tubes in stainless steel or duplex grades?

A: Yes. Dexter Sales Inc. supplies U-bend tubes in a full range of stainless steel and duplex stainless steel grades, manufactured in accordance with ASME/ASTM SA688. Custom bend radii and dimensions are available to meet your heat exchanger design requirements.

Q: Do you supply stainless steel and duplex steel plates for pressure vessels?

A: Yes. We offer hot-rolled and cold-rolled stainless steel and duplex steel plates that comply with ASTM A240 and ASTM A480 standards. These plates are suitable for pressure vessel fabrication, heat exchangers, storage tanks, structural applications, and industrial linings.

Q: What is the minimum order quantity (MOQ)?

A: The minimum order quantity depends on the material grade, dimensions, and product specifications. Contact our team with your project requirements, and we'll provide a customized quotation, MOQ details, pricing, and estimated lead time.