Alloy 20 Pipes & Tubes

Alloy 20 Pipes & Tubes

ARK Stainless Inc. is a trusted supplier and stockist of premium quality Alloy 20 Pipes & Tubes, known for their exceptional performance in highly corrosive environments. Also referred to as Carpenter 20 or UNS N08020, this austenitic nickel-iron-chromium alloy is specifically designed to offer superior resistance to sulfuric acid and other aggressive chemical environments, making it ideal for demanding industrial applications.

Our Alloy 20 Pipes & Tubes are manufactured in accordance with international specifications such as ASTM B729 / ASTM B464 / ASME SB729 / ASME SB464. The alloy’s composition, which includes nickel, chromium, molybdenum, and copper, provides outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. These tubes are widely used in industries such as chemical processing, pharmaceuticals, food and beverage, petrochemical, and marine engineering.

Available in both seamless and welded forms, our Alloy 20 Pipes & Tubes come in a variety of sizes, schedules, wall thicknesses, and lengths to meet specific project requirements. They are supplied in annealed and pickled condition, with options for customized cutting, polishing, and fabrication. These products offer excellent weldability and workability, even in aggressive service environments.

To ensure top-tier quality and compliance, all pipes and tubes undergo rigorous testing including PMI testing, chemical and mechanical analysis, hydrostatic tests, and non-destructive evaluations. We provide complete documentation including Mill Test Certificates, EN 10204 3.1 certification, NABL-approved lab reports, and Third-Party Inspection Certificates, assuring our clients of traceability and conformity to international standards.

Alloy 20 Pipes and Tubes Equivalent Grades

Specification of Alloy 20 Seamless / Welded Pipes and Tubes

Specification : ASTM B729, B464, B468/ ASME SB729, SB464, SB468
Pipe Range : ½”NB to 24”NB / SCH 10 – SCH XXS
Tubes Range: 1mm OD to 254mm OD / Thickness 0.1 to 20mm.
Type : Seamless / ERW / Welded / Fabricated Pipes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
Length : Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Inspection, Test Reports : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing : Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials : Sizes and Specifications other than above can be manufactured on request