Alloy Steel Buttweld Fittings
ASTM A234 WP11 / WP22 / WP91 · Grade WP11: 1.25Cr–0.5Mo (ASTM A234)
8 products8 with full dimension tables
Material Reference: Alloy Steel
Alloy steel buttweld fittings for high-temperature creep service in power boilers, refineries, and petrochemical plants. Chromium-molybdenum grades (WP11, WP22, WP91) provide superior strength at elevated temperatures compared to carbon steel.
- Grade WP11: 1.25Cr–0.5Mo (ASTM A234)
- Grade WP22: 2.25Cr–1Mo (ASTM A234)
- Grade WP91: 9Cr–1Mo–V (ASTM A234)
- Manufacturing: Seamless per ASME B16.9
- PWHT: Post weld heat treatment required
AS P11 P22 Buttweld
4
Dimensions in millimetres. All specifications subject to change without notice.
ASME · MSS · IS standards