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ASTM A234/A234M-10 Standard Specification for Pipes Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
This 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, MSS-SP—83, MSS-SP-95, and MSS-SP-97. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Fittings differing from these ASME and MSS standards shall be furnished in according with Supplementary Requirement S58 of Specification A960/A960M
Alloy Steel Pipe Fittings Heat Treatment
Heat Treatment Procedures – fittings, after forming at an elevated temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. Heat treatment temperature specified are metal (part) temperatures. Heat- treatment fittings shall be treated according to paragraph 7 in specification A960/A960M.
WPB, WPC, and WPR Fittings
Hot-formed WPB, WPC, and WPR fittings upon which the final forming operation is completed at a temperature above 1150 °F [620° C ] and below 1800 °F [980 °C] need not be heat treatment provided they are cooled in still air. 7.2.2 Hot-formed or forged WPB, WPC, and WPR fitting finished at temperature in excess of 1800 °F [980 °C] shall subsequently be annealed, normalised, or normalized and tempered. Hot-forged fittings NPS 4 or smaller need not be heat treated.
WPB, WPC, and WPR fittings over NPS 12, produced by locally heating a portion of the fitting stock to any temperature for forming, shall be subsequently annealed, normalized, or normalized and tempered. fittings such as elbows tees, header tees, reducers and lap joint stub ends with a carbon content less than 0.26%, NPS 12 and under, shall not require heat treatment after forming a locally heated portion of the fitting.
Alloy Steel Pipe Fittings Specifications
Grades | Chrome Moly Grades P1, P5, P9, P11, P22, P91 |
Specification | A/SA234 WP1, WP5, WP9, WP11, WP22, WP91 | A/SA182 F1, F5, F9, F11, F22, F91 |
Type | Seamless / Welded / Fabricated / Forged |
Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
Range | ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS. |
Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
Buttweld Chorme Moly/Alloy Steel Pipe Fittings
Seamless/ Welded 100% Radiography Tested
Products | Size | |
Alloy Steel Elbows – Long Radius | Alloy Steel Stub Ends | Sizes 1/2″ – 48″ |
Alloy Steel Elbows – Short Radius | Alloy Steel Crosses | |
Alloy Steel Reducing Elbows | Alloy Steel Reducing Crosses | |
Alloy Steel 45° Elbows | Alloy Steel 180° LR Return Bends | |
Alloy Steel Tees | Alloy Steel 180° SR Return Bends | |
Alloy Steel Tees | Alloy Steel Pipe Bends / Piggable Bends | |
Alloy Steel Reducers | Alloy Steel Couplings | |
Alloy Steel Concentric Reducers | Alloy Steel Pipe Nipples | |
Alloy Steel Eccentric Reducers | Alloy Steel Forged/Plate Cut Rings | |
Alloy Steel 3D Elbow | Alloy Steel End Caps | |
Alloy Steel 5D Elbow | Alloy Steel Forged / Plate Circles |
High Pressure Forged Chrome Moly/Alloy Steel Pipe Fittings
Chrome Moly Threaded and Socket Weld Pipe Fittings
Products | Size | |
Alloy Steel Steel 90° Elbows | Alloy Steel Couplings | Sizes 1/8″ – 4″ Pressure Ratings 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
Alloy Steel 45° Elbows | Alloy Steel Reducers | |
Alloy Steel Street Elbows | Alloy Steel Inserts | |
Alloy Steel Tees | Alloy Steel Caps | |
Alloy Steel Crosses | Alloy Steel Unions |
Alloy Steel Type 360LT
A694 Grade FWP11 Forging
A860 Grade ASTM A234 WP11 Fittings
API 5L Grade XWP11 Seamless Pipe
Material | Size (mm) | SCH/ Class | Thickness | Specification | Manufacturing |
Alloy Steel Pipe Fittings | 15NB to 600NB | SCH40 to XXS | 3.91 to 60mm | A234 WP | Seamless |
200NB to 1800NB | SCH10, 20, 30, 40, 80 | 6.35 to 60mm | A234 WP | Welded |
ASTM A234 WP11 Equivalent | |
A234 WP11 | A860 Grade ASTM A234 WP11 Fittings |
A694 ASTM A234 WP11 | A694 Grade FWP11 Flanges |
A234 ASTM A234 WP11 | A234 Grade WPB Alloy Steel Fittings A234 AISI 4130 High Strength Low Alloyed Steel Fittings |
Grade Specification | Carbon Steel: ASTM/ASME A234/ SA234 |
ASTM A234 WP11 Fittings Size | Seamless:from 1/2" to 24" |
Welded:from 24" to 96" (or as customer requirements) | |
ASTM A234 WP11 Fittings Degree | 22.5 deg, 30deg,45 deg,90 deg,180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D,4D,5D,6D,7D-40D. |
ASTM A234 WP11 Fittings Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH80., SCH100, SCH120, SCH140, SCH160, XXS |
Standard | ASME B16.9, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
Alloy Steel Material | Alloy Steel ASTM A234 WPB, A234WPC, A420 WPL6, etc |
Stainless steel ASTM A403 WP304, 304L, 316, 316L, 321,etc | |
Alloy steel ASTM A234 WP12, WP11, WP22, WP5, WP9, WP91, etc | |
ASTM A234 WP11 Fittings Type | Seamless / Welded / Fabricated |
ASTM A234 WP11 Fittings Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
ASTM A234 WP11 Fittings Range | ½" NB to 48" NB in Sch 10s, 40s, 80s, 160s, XXS. |
Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
Applicable Standards | 1-ASME B 16.9 for large Bore 2-ASME B 16.11 for small Bore (socket welded) 3-ASME B 16.25 for butt weld ends 4-ASME B 16.28 for small radius elbow |
Seamless/ Welded 100% Radiography Tested |
Standard | Description |
ASTM A182/A182M | Forged or rolled alloy steel pipe flanges, forged fittings and valves and parts for high temperature service. Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
ASTM A403/A403M | Wrought austenitic stainless steel piping fittings. |
ASTM A815/A815M | Wrought ferritic, ferritic/austenitic and martensitic stainless steel piping fittings. |
AS 2129 | Flanges for pipes, valves and fittings |
ANSI/ASME B1.20.1 | Pipe threads, general purpose (inch). |
ANSI B16.5 | Steel pipe flanges and flanged fittings. |
ANSI B16.9 | Factory-made wrought steel butt-welding fittings. |
ANSI B16.11 | Forged steel fittings socket-welding and threaded. Socket Welding and Threaded Forged Fittings |
ANSI B16.25 | Butt-welding ends. |
MSS SP43 | Wrought stainless steel butt-welding fittings. Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications |
BS21 | Threading. |
ISO 4144 | Stainless steel fittings threaded to ISO 7-1. |
MSS SP-95 | Swage(d) Nipples and Bull Plugs |
BS3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |
ANSI – B 16.9 ASTM A403 ASME SA403 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
API 590-605 ASME B16.9 | Factory-Made Wrought Buttwelding Fittings |
ASME B16.25 | Buttwelding Ends |
ASME B16.28 | Wrought Steel Buttwelding Short Radius Elbows and Returns |