ASME B36.19
Stainless steel pipe — sizes and schedules
Sets the sizes and wall thicknesses of stainless steel pipe, including the light-wall "S" schedules — 5S, 10S, 40S and 80S.
- Dimensional standards
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASME B36.19
The points that decide whether material to ASME B36.19 is accepted at inspection.
- Outside diameters are the same as B36.10 for the same NPS.
- 10S and 40S are the common stainless schedules.
- Heavier walls (Sch 160, XXS) come from B36.10.
Products made to ASME B36.19
How ASME B36.19 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
ASME B36.19 — questions buyers ask
What does ASME B36.19 cover?
Sets the sizes and wall thicknesses of stainless steel pipe, including the light-wall "S" schedules — 5S, 10S, 40S and 80S.
Does ASME B36.19 specify the material?
No. ASME B36.19 sets dimensions; the material comes from a separate specification such as ASTM A182, A105 or B564 for flanges, or A403 and B366 for fittings. A complete order names 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