TECHNICAL LIBRARY · ASTM WELDED NICKEL-ALLOY TUBE
ASTM B626-26 — Welded Nickel and Nickel-Cobalt Alloy Tube
Procurement reference for welded nickel and nickel-cobalt alloy tube for defined thermal and corrosive services.
Edition control: ASTM B626-26 is the active edition identified in the official ASTM catalogue checked on 1 September 2026. Confirm the authorised publication and purchase-order requirements before use.
Scope in Procurement
ASTM B626 covers welded tube made from the listed nickel and nickel-cobalt alloys for heat-exchanger, condenser, general corrosive and heat-resisting applications. Exact alloy and tube duty must be stated.
RFQ and Product Controls
- Exact UNS alloy and ASTM B626-26 edition
- Tube application, outside diameter, wall thickness, length and tolerances
- Automatic weld route, filler-metal restriction and required final condition
- Heat treatment, surface state, cleanliness and end preparation
- Chemical, tensile, flattening and flanging requirements as applicable
- Hydrostatic, pneumatic or eddy-current examination route and supplementary testing
- ASTM B751 requirements, inspection document, traceability, marking and destination
The material identity must remain traceable from the producing heat and lot through manufacture, welding, testing, inspection documentation, marking and final release.
Scope Boundary
ASTM B626 is a welded tube specification, not a welded pipe or seamless tubular route. Its broad service language does not replace evaluation of process medium, temperature, pressure code, fabrication and equipment design.
Related MNK Technical Pages
Official Publication and Access Policy
Check the official record for ASTM B626-26. This page is an original procurement-oriented summary. Protected grade tables, property values, tolerances, dimensions and test clauses are not reproduced on this website.
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