On this page 6 sections
What ASTM A234 covers
Standard at a glance
- Standard
- ASTM A234 / ASME SA234
- Issued by
- ASTM
- Product form
- Fittings
- Grades on site
- 6
Butt-weld fittings in carbon steel (WPB, WPC) and Cr-Mo alloy steel (WP11, WP22, WP5, WP9, WP91), matched to A106 and A335 pipe.
Key requirements
- Seamless or welded construction
- Heat treatment by grade
- Hardness tests
- Dimensions per ASME B16.9 / B16.28
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A234
Ordering to ASTM A234
- State "ASTM A234" and the edition if your project requires it
- Grade / designation and product dimensions
- Supplementary requirements (tests, heat treatment, certification)
- Certificate type: EN 10204 3.1 or 3.2
Frequently asked questions
What does ASTM A234 cover?
Butt-weld fittings in carbon steel (WPB, WPC) and Cr-Mo alloy steel (WP11, WP22, WP5, WP9, WP91), matched to A106 and A335 pipe.
Which grades are covered by ASTM A234?
On this site: ASTM A106 Grade B, P11 / T11 / Grade 11 (1¼Cr-½Mo), P22 / T22 / Grade 22 (2¼Cr-1Mo), P91 / T91 / Grade 91 (9Cr-1Mo-V), P5 / T5 / Grade 5 (5Cr-½Mo), P9 / T9 / Grade 9 (9Cr-1Mo).
Do you supply material certified to ASTM A234?
Yes. Material is supplied to ASTM A234 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA234 the same as ASTM A234?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-234). The adopted text is identical or includes stated modifications, and dual-certified material meets both.