ASTM B464 is a standard specification for welded nickel-chromium-iron-molybdenum-copper alloy (UNS N08020) pipe used for general corrosion-resistant services. Alloy 20, also known as Carpenter 20, is a highly alloyed austenitic stainless steel that provides excellent resistance to a wide range of corrosive media, particularly those containing sulfuric acid.
ASTM B464 UNS N08020 Material Properties
The significant benefits of using ASTM B464 UNS N08020 Pipe in various industries are its excellent mechanical properties, superior corrosion resistance, and durability. The chemical composition of alloy 20 cb3 ensures high resistance to corrosion, pitting, and crevice corrosion in chemicals, acids, and alkaline solutions. The Alloy 20 welded pipe is an ideal choice for working in severe environmental conditions, including high-temperature and high-pressure applications.
Incoloy Alloy 20 Welded Pipe Fabrication
The manufacturing of alloy 20 welded pipe is to use hot-rolled or cold-rolled steel plates, which are rolled into a pipe shape of the required diameter through a plate rolling machine. Connections are made through welding processes. Commonly used welding methods include arc welding, high-frequency induction welding, resistance welding. Compared with seamless pipes, uns n08020 material welded pipes have some obvious advantages: lower cost, high production efficiency, and the ability to be mass-produced at higher speeds.
ASTM B464 Alloy 20 Welded Pipe Applications
ASTM B464 UNS N08020 Welded Pipe is fabricated using high-quality raw material and advanced welding techniques to ensure flawless and leak-free piping that is perfect for corrosive environments. The carpenter 20 alloy pipe is manufactured as per international standards and specifications, including ASTM B464, ASME SB464, DIN 2.4660, and ASTM B729. The applications of ASME SB464 UNS N08020 welded tube include heat exchangers, pressure vessels, pumps, valves, reactor vessels, storage tanks, and distillation columns.
Alloy 20 UNS N08020 Specifications
Moreover, alloy 20 pipe welding is available in various shapes and sizes, including round, square, rectangular, and oval, with different wall thicknesses and diameters. The carpenter 20 steel tubing can be customized as per client requirements with different specifications and end connections.
Advanced Fabrication and Rigorous Quality Control
Our manufacturing facilities employ high-precision hot-rolling and cold-forming systems to shape premium alloy sheets into exact pipe diameters. Longitudinal seams are joined via automatic gas tungsten arc welding (GTAW) or plasma arc welding (PAW) techniques.
To satisfy the safety mandates of ASME B31.3 industrial processing guidelines, every single ASTM B464 pipe batch undergoes rigorous quality testing:
Nondestructive Electric Evaluation: Every pipe length undergoes full longitudinal seam Eddy Current Testing (ECT) or Ultrasonic Examination to verify weld fusion depth.
Hydrostatic Testing: Each pipe is subjected to rigorous pressure containment tests to confirm leak-free integrity under heavy fluid transport conditions.
Flattening and Flange Testing: Physical destructive cross-section tests ensure that the heat-affected zone (HAZ) surrounding the weld seam preserves absolute ductility and structural cohesion.
B2B Sourcing, Custom Sizes, and Project Packing
HT PIPE stocks an extensive array of UNS N08020 welded pipes ranging from 1/2" NB up to 24" NB in standard wall schedules (Schedule 5S, 10S, 40S, and 80S). We offer custom cut-to-length solutions, end-prep beveling for automated field welding, and surface passivating/pickling treatments.
Every export delivery is backed by a verified EN 10204 3.1 Mill Test Certificate (MTC), comprehensive packing lists, and certified maritime export shipping crates. Contact our operations specialists today to receive a competitive project pricing breakdown or to submit your detailed Bill of Materials (BOM) for direct factory sourcing.
