ASTM B622
Seamless nickel and nickel-cobalt alloy (C276, C22) pipe and tube
Covers seamless nickel and nickel-cobalt alloy pipe and tube, including Hastelloy C276 (N10276) and C22 (N06022).
- Pipe & tube
- ASME SB-622
- 2 grades in stock range
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASTM B622
The points that decide whether material to ASTM B622 is accepted at inspection.
- Material is supplied solution-annealed.
- Welded pipe in these alloys is ASTM B619 / B626.
- Fittings are B366 WPHC276 / WPHC22 and flanges B564.
Grades and products we supply to ASTM B622
| Grade | Product | Designation on the certificate |
|---|---|---|
| Hastelloy C276 | Pipe & Tube | ASTM B622 |
| Hastelloy C276 | Pipe & Tube | ASTM B622 · B626 |
| Hastelloy C22 | Pipe & Tube | ASTM B622 |
| Hastelloy C22 | Pipe & Tube | ASTM B622 · B626 |
How ASTM B622 fits into an order
A purchase order line is only complete when it names the material standard, the dimensional standard and the inspection document. Miss one and the mill, the inspector and the buyer can each read the order differently.
Related standards
ASTM B622 — questions buyers ask
What does ASTM B622 cover?
Covers seamless nickel and nickel-cobalt alloy pipe and tube, including Hastelloy C276 (N10276) and C22 (N06022).
Which grades do you supply to ASTM B622?
Hastelloy C276, Hastelloy C22 — see the table on this page for the exact product and designation.
What is the difference between ASTM B622 and ASME SB-622?
ASME SB-622 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM B622. The technical requirements are usually identical to a specific ASTM edition; pressure-equipment codes call for the ASME designation, and most mill certificates show both.
Do you supply certificates to this standard?
Yes. Material is supplied with mill test certificates to EN 10204 3.1 showing the standard, grade and heat number; 3.2 with third-party inspection on request.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026