A691 specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses
and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties. The pipes are classified according to steel grades and
are designated in classes according to the type of heat treatment performed in the pipe manufacture, whether the weld is radiographically examined, and whether the pipe has been pressure tested. The steel welds shall be made
either manually or automatically by an electric process involving the deposition of filler metal. The welded joints shall have positive reinforcement at the center of each side of the weld. The contour of this reinforcement
shall be smooth, and the deposited metal shall be fused smoothly and uniformly into the plate surface. The joints shall undergo tension, bend and pressure tests. Unacceptable surface imperfections shall be removed by grinding
or machining. The depression after grinding or machining shall be blended uniformly into the surrounding surface. Repair of weld and base metal defects shall be done by welding.
A691 91 Specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.
The specification nominally covers pipe 16 in. [400 mm] in outside diameter and larger with wall thicknesses up to 3 in. [75 mm] inclusive. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.
|Type||ASTM A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 LSAW / SAW / EFW Pipe|
|Grades||1-1/4CR, 2-1/4CR, 5CR, 9CR, 9, P5, P9, P11, P12, P22, P91|
|ASTM A691||Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures|
|Class Designation||Class 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 34, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73..|
|Size||Outer Diameter||Seamless 17-914mm 3/8-36 inch
LSAW 457-1422mm 18-56 inch
SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80 SCH100 SCH120 SCH140 SCH160 XXS
|Length||Single random length/Double random length
5m-14m,5.8m,6m,10m-12m,12m or as customer's actual request
|Ends||Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc|
|Surface Treatment||Bare,Painting black,varnished,galvanized,anti-corrosion
PE PP/EP/FBE coating
|Testing Methods||Eddy current testing, Hydrostatic testing or Ultrasonic examination, NDT and also with chemical and physical property inspection|
|Packaging||Small pipes in bundles with strong steel strips,large pieces in loose; Covered with plastic woven bags; Suitable for lifting operation; Loaded in 40ft or 20ft container or in bulkAlso according to customer's requests|
|Application||Conveying oil, gas and water|
|Production Capacity||5000 T/M|
|Delivery Time||Within 2 Weeks|
|Pipe Grade||ASTM Specification||Post-Weld Heat-Treat Temperature Range (Stress Relieving), °F (°C)||Normalizing Temperature max unless otherwise noted,||Quenching Temperature max unless otherwise noted,°F (°C)||Tempering Temperature, min, °F (°C)|
|CM-65||A 204/A 204M||1100 to 1200 (590 to 650)||1700 (925)||…||…|
|CM-70||A 204/A 204M||1100 to 1200 (590 to 650)||1700 (925)||…||…|
|CM-75||A 204/A 204M||1100 to 1200 (590 to 650)||1700 (925)||…||…|
|CMSH-70||A 537/A 537M||1100 to 1200 (590 to 650)||1700 (925)||…||…|
|CMS-75||A 299/A 299M||1100 to 1200 (590 to 650)||1700 (925)||…||…|
|CMSH-80||A 537/A 537M||1100 to 1200 (590 to 650)||A||1700( 925)||1100 to 1250 (590 to 675)|
|1/2CR||A 387/A 387M||1100 to 1300 (590 to 705)||1850 (1010)||1700( 925)||150 to 1375 (620to745)|
|1CR||A 387/A 387M||1100 to 1350 (590 to 730)||1850 (1010)||1700 (925)||150 to 1375 (620to745)|
|11⁄4CR||A 387/A 387M||1100 to 1375 (590 to 745)||1850 (1010)||1700 (925)||150 to 1375 (620to745)|
|21⁄4CR||A 387/A 387M||1200 to 1400 (650 to 760)||1850 (1010)||1700 (925)||250 to 1400(675 to760)|
|3CR||A 387/A 387M||1200 to 1400 (650 to 760)||1850 (1010)||1700 (925)||250 to1400 (675 to760)|
|5CR||A 387/A 387M||1200 to 1400 (650 to 760)||1850 (1010)||1650 (900)||1300 to1400 (705 to760)|
|9CR||A 387/A 387M||1325 to 1375 (715 to 745)||B||…||1325 to1375 (715 to745)|
|91||A 387/A 387M||1350 to 1420 (730 to 770)||11900 to 2000 (1040 to 1095)||1900 min (1040 min)||1350 to 1440 (730 to 780)|
*A Requires quenching and tempering.
*B 9CR steel is an air-hardenable steel, at times retaining austenite down to near atmospheric temperature. Good practice is to allow the steel to cool to 150° For lower before subjecting the steel to a tempering treatment or post-weld heat treatment.
|Class||Heat Treatment on Pipe Section see:||Radiography,
Test, see :
|21||stress relieved, see 6.3.1||none||none|
|21||stress relieved, see 6.3.1||9||none|
|22||stress relieved, see 6.3.1||9||8.3|
|23||stress relieved, see 6.3.1||none||8.3|
|31||normalized, see 6.3.2||none||none|
|31||normalized, see 6.3.2||9||none|
|32||normalized, see 6.3.2||9||8.3|
|33||normalized, see 6.3.2||none||8.3|
|40||normalized and tempered, see 6.3.3||none||none|
|43||normalized and tempered, see 6.3.3||9||none|
|43||normalized and tempered, see 6.3.3||9||8.3|
|43||normalized and tempered, see 6.3.3||none||8.3|
|50||quenched and tempered, see 6.3.4||none||none|
|51||quenched and tempered, see 6.3.4||9||none|
|52||quenched and tempered, see 6.3.4||9||8.3|
|53||quenched and tempered, see 6.3.4||none||8.3|
|60||normalized and precipitation heat none none treated||none||none|
|61||normalized and precipitation heat none none treated||9||none|
|62||normalized and precipitation heat none none treated||9||8.3|
|63||normalized and precipitation heat none none treated||none||8.3|
|70||normalized and precipitation heat none none treated||none||none|
|71||normalized and precipitation heat none none treated||9||none|
|72||normalized and precipitation heat none none treated||9||8.3|
|73||normalized and precipitation heat none none treated||none||8.3|
|Pipe Grade||Type of Steel||ASTM Specification||HB, max|
|CMSH-70||carbon-manganese-silicon steel, normalized||A537/A537M||1|
|CMSH-80||carbon-manganese-silicon steel, quenched and tempered||A537/A537M||2|
|1/2 CR||1/2 % chromium, 1/2 % molybdenum steel||A387/A387M||2||201|
|1 CR||1 % chromium, 1/2 % molybdenum steel||A387/A387M||12||201|
|1 1/4 CR||1 1/4 % chromium, 1/2 % molybdenum steel||A387/A387M||11||201|
|2 1/4 CR||2 1/4 % chromium, 1 % molybdenum steel||A387/A387M||22||201|
|3 CR||3 % chromium, 1 % molybdenum steel||A387/A387M||21||201|
|5 CR||5 % chromium, 1/2 % molybdenum steel||A387/A387M||5||225|
|9 CR||9 % chromium, 1 % molybdenum steel||A387/A387M||9||241|
|91||9 % chromium, 1 % molybdenum, vanadium, columbium||A387/A387M||91||241|
A Class I is Other Than Killed with a specified minimum tensile strength of 450 MPa or lower.
Class II is Other Than Killed with a specified minimum tensile strength of 450 to 520 MPa incl.
Class III is Killed with a specified minimum tensile strength of 450 MPa or lower.
Class IV is Killed with a specified minimum tensile strength of 450 to 520 MPa incl.
Class V is Killed with a specified minimum tensile strength of over 520 MPa to but not including 655 MPa.
Class VI is Killed with a specified minimum tensile strength of 655 MPa or over. B Full size (10 by 10 mm) specimens.
C Testing temperature as specified in the purchase order, but no higher than 0°C
(cast analysis, % by mass, maximum permitted unless indicated otherwise
|1CR||1-1/4CR||2-1/4 CR||5 CR||9 CR||91|
*Grade 91 also includes restrictions on Nickel 0.40 max, Columbium 0.06-0.10, Nitrogen 0.030-0.070, Aluminium 0.02 max, titanium 0.01 max, Zirconium 0.01 max.
|Grade||Tensile (MPa)||Yield (MPa)||Elong. (50mm)||Reduc'n of Area*|
|1CR||380 - 550||230 min||22% min||-|
|1-1/4CR||415 - 585||240 min||22% min||-|
|2-1/4CR, 5CR, 9CR||415 - 585||205 min||18% min||40% min|
|91||415 - 585||205 min||18% min||40% min|
* Measured on a flat specimen
|Grade||Tensile (MPa)||Yield (MPa)||Elong. (50 mm)||Reduc'n of Area*|
|2||485 - 620||310 min||22% min||-|
|1-1/4CR||515 - 690||310 min||22% min||-|
|1CR||450 - 585||275 min||22% min||-|
|2-1/4CR, 5CR, 9CR||515 - 690||310 min||18% min||40% min|
|91||585 - 760||415 min||18% min||-|
* Measured on a flat specimen
As with all ASME and ASTM pressure vessel steels, Chrome Moly to SA387 and A387 is produced in conformity to SA20 / A20 which outlines the testing and retesting methods and procedures, permissable variations in dimensions and weight, quality and repair of defects, marking, loading, and ordering information.
In addition to the basic requirements of SA20 / A20 certain supplementary requirements are available when additional control, testing, or examination is required to meet end use requirements. These might include product analysis (S2), charpy V-notch impact test (S5), or ultrasonic testing (S12): a variety of supplementary requirements are available.
ASTM A691 Grade 91 Alloy Steel EFW Pipe
We are Stockholder & Distributors of ASTM A691 Alloy Steel EFW Electric Fusion Welded Pipes in Grade 1CR Grade-12, 1.1/4CR Grade-11, 2.1/4CR Grade-22, 3CR Grade-21, 5CR Grade-5, 9CR Grade-9, Grade-91
A691 91 Alloy Steel EFW Pipe is sleeved into plastic bag individually, pieces wrapped with water-proof material, bundled with nylon rope. Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation
A691 91 Alloy Steel EFW Pipe packing will be according to international standard in bundles strapped by strips then into containers to avoid any damage.
Delivery: Within 10-25 days or asap if we have enough stock
We export A691 Grade 91 Alloy Steel EFW Pipe to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia,
Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of
America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, europe,
Africa, Asia, North America, South America, Middle East, Far East.etc
Prosaic Steel and Alloys is a well known worldwide exporter of A691 Grade 91 Alloy Steel EFW Pipe, Prosaic Steel and Alloys is committed to provide each and every customer with the highest standard of customer service. We deals in A691 Grade 91 Alloy Steel EFW Pipe in India & Overseas, offering a wide range of A691 Grade 91 Alloy Steel EFW Pipe Prosaic Steel and Alloys is Leading Manufacturer, Distributor, Exporter, Stockholder and Supplier of A691 Grade 91 Alloy Steel EFW Pipe in United States of America (USA), Saudi Arabia, Iran, Iraq, United Arab Emirates (UAE), Turlkey, Singapore, Malaysia, Indonesia