A234 WP11 FITTING

Grades in Chrome Moly Alloy Steel: ASTM A234 WP11 CL1/2/3, WP12 CL1/3, WP5 CL1/3, WP9 CL1/3, WP91 Type 1/2
Grades in Carbon Steel: ASTM A234 Grade WPB, WPC,
Outer Diameters: 1/2” to 48” in ASME B16.9
Wall Thickness Schedule: SCH 10, SCH 20, SCH 30, SCH 40, SCH STD, SCH 80, SCH XS, SCH120, SCH 160, SCH XXS comply with ASME B36.10
Pressure Class: Class 150, 300, 600, 900, 1500, 2500
Manufacturing Standards: ASME B16.9, ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97.

ASTM A234 WP11 (ASME SA234 WP11) is Chrome Moly Pipe Fittings standard specification for high temperature services. WP11 Pipe Fittings Chrome content at 1.00% to 1.50%, Moly content 0.44% to 0.65%, Minimum tensile strength 415MPa, minimum yield strength 205Mpa. It covers the butt-welded pipe fittings of Elbow, Tee, Reducer, Cap and Cross, and some socket welding, threaded pipe fittings, raw material from ASTM A335 P11.

ASTM A234 Standard Scope

The specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASME B16.9, B16.11, MSS-SP-79 /83 /95 /97. These pipe fittings used in pressure pipelines and pressure vessel fabrication for servic at moderate and increased temperatures. Fittings out of above standards shall be complied with A960/A960M.

It does not cover cast welding fittings which refered standards are ASTM A216/A216M and A217/217M.

Corresponding Material

Seamless Pipe Standard: ASTM A335 P11 / ASME SA335 P11
Flange Standard: ASTM A182 F11
Steel Plate Standard: ASTM A387 Grade 11/ ASME SA387 Grade 11
Welded pipe standard: ASTM A691 1-1/4 CR