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Home > Steel Pipe> ASTM A691 Chrome Moly EFW Pipe
ASTM A691 Chrome Moly EFW Pipe image
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ASTM A691 Chrome Moly EFW Pipe

Class Designation: Class 11, 12, 22, 23, 30, 31, 32, 33, 34, 60...

Outer Diameter: 457-1422mm

Wall Thickness: 2-60mm

Length: Single random length/Double random length

Alloy Steel SA691 Welded Pipes Alloy ASME SA691 EFW Pipe Alloy SA691 High Pressure Pipe ASTM A691 SAW Pipe ASME SA691 LSAW Pipes SA691 Seamless Pipe Alloy SA691 Welded Pipe

ASTM A691 Chrome Moly EFW Pipe Manufacturer And Expert

ASTM 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.

A691 Pipes Specification

Specification ASTM A691 / ASME SA691
Grades ASTM A691 1-1/4CR, ASTM A691 2-1/4CR, ASTM A691 3CR, ASTM A691 5CR, ASTM A691 9CR, ASTM A691 91, ASME SA691 1-1/4CR, ASME SA691 2-1/4CR, ASME SA691 3CR, ASME SA691 5CR, ASME SA691 9CR, ASME SA691 91
Type EFW (Electric Fusion Welded Pipes)
Class Designation CLASS 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43
Outer Diameter Size 16″ NB to 100″ NB (Nominal Bore Size)
Wall Thickness Schedule 20 to Schedule XXS (Heavier On Request) Up to 75 mm Thickness
Length 5 to 7 meters, 09 to 13 meters, single random length, double random length, and customised size.
 Ends Plain Ends / Bevelled Ends / Coupling
Delivery Conditions As Rolled, Normalizing Rolled, Thermomechanical Rolled/Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered – BR / N / Q /T
Coating Epoxy Coating / Color Paint Coating / 3LPE Coating.
Other Testing NACE MR0175, NACE TM0177, NACE TM0284, Charpy V-Notch Test, Radiograph HIC Examination, XRAY, Ultrasonic EXAMINATION, Liquid Penetrant, Magnetic Particle, HIC Test, SSC Test, SWC, H2 Service, IBR, PWHT Etc.
Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API.
Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment
Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
Shipment & Transportation By Road – Truck / Train, By Sea – Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes
Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW Pipes

Pipe grade Steel type ASTM Specification HB, maxA
Number Grade
0.5  CR 0.5%  chromium, 0.5% molybdenum steel A387/A387M 2 201
1 CR 1% chromium, 0.5% molybdenum steel A387/A387M 12 201
1.25 CR 1.25% chromium, 0.5% molybdenum steel A387/A387M 11 201
2.25 CR 2.25% chromium, 1% molybdenum steel A387/A387M 22 201
3 CR 3% chromium, 1% molybdenum steel A387/A387M 21 201
5 CR 5% chromium, 0.5% 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

A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW LSAW Pipes Class

Class Heat treatment of pipe Radiography Pressure test
10 none no no
11 none yes no
12 none yes yes
13 none no yes
20 stress relieved no no
21 stress relieved yes no
22 stress relieved yes yes
23 stress relieved no yes
30 normalized no no
31 normalized yes no
32 normalized yes yes
33 normalized no yes
40 normalized and tempered no no
41 normalized and tempered yes no
42 normalized and tempered yes yes
43 normalized and tempered none yes
50 quenched and tempered none none
51 quenched and tempered yes none
52 quenched and tempered yes yes
53 quenched and tempered none yes

 

Specification Parameters
Basic Information

Chemical Composition of A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW Pipes
(cast analysis, % by mass, maximum permitted unless indicated otherwise)

1CR 1-1/4CR 2-1/4 CR 5 CR 9 CR 91
C 0.05-0.17 0.05-0.17 0.05-0.15 0.15 0.15 0.08-0.12
Mn 0.40-0.65 0.40-0.65 0.30-0.60 0.30-0.60 0.30-0.60 0.30-0.60
P 0.025 0.025 0.025 0.025 0.025 0.020
S 0.025 0.025 0.025 0.025 0.025 0.010
Si 0.15-0.40 0.50-0.80 0.50 0.50 1.00 0.20-0.50
Cr 0.80-1.15 1.00-1.50 2.00-2.50 4.00-6.00 8.00-10.00 8.00-9.50
Mo 0.45-0.60 0.45-0.65 0.90-1.10 0.45-0.65 0.90-1.10 0.85-1.05
V – – – – 0.04 0.18-0.25

Heat Treatment of A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW Pipes

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)
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)

*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.

 

Service Support
ASTM A691 Chrome Moly EFW Pipe

Types of Packaging:

  • – Bundles (hexagonal)
  • – Wooden Boxes
  • – Crates (steel/wooden)
  • – Special crates for U-Bend tubes with each radius separated
  • – Packaging for A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW Pipe as per customer’s requirements

Special Features:

  • Each bundle covered with plastic for protection against extreme weather.
  • End of A691 1-1/4CR, 2-1/4CR, 5CR, 9CR, 91 Alloy Steel EFW Pipe protected by plastic caps.
  • Bundles strapped with plastic strips.
  • Each radius of U-Bend tube separated by a separator.
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