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ASTM A671 STEEL PIPE

ASTM A671 STEEL PIPE
ASTM A671 Steel Pipes step in as a dependable solution engineered to perform in challenging environments. At Prosaic Steel and Alloys, we understand that quality, consistency, and delivery timelines can make or break a project. That’s why we specialize in the manufacturing, fabrication, import, and supply of A671 CC60, CC65, and CC70 Electric Fusion Welded (EFW) Pipes—serving both domestic and global clients with the same precision and professionalism.
With years of experience in handling carbon steel piping solutions, we have built a reputation as one of India’s largest stockholders and premier suppliers of ASTM A671 Pipes. Our inventory includes a comprehensive range of A671 LSAW (Longitudinal Submerged Arc Welded) Pipes, available in custom sizes, wall thicknesses, and pressure ratings—ensuring suitability for everything from low-temperature fluid transportation to high-pressure pipelines in thermal plants and chemical facilities.
 
What makes ASTM A671 Pipes particularly useful is their origin: these pipes are manufactured using pressure vessel quality plates—the same high-grade steel plates used in making industrial boilers and vessels. The electric fusion welding process adds strength, while the optional heat treatment helps achieve specific mechanical properties. These pipes are not only durable and dimensionally accurate but also capable of withstanding stress in extreme conditions, whether it’s sub-zero temperatures or aggressive chemical exposure.
 
At Prosaic Steel and Alloys, we don’t just sell steel—we provide performance-driven piping solutions tailored to your technical and operational needs. Whether you need a small batch for replacement parts or bulk procurement for large infrastructure projects, our team ensures quick turnaround, global shipping, and compliance with ASTM and ASME standards.
 
ASTM A671 Carbon Steel Pipes step in as a dependable solution engineered to perform in challenging environments. At Prosaic Steel and Alloys, we understand that quality, consistency, and delivery timelines can make or break a project. That’s why we specialize in the manufacturing, fabrication, import, and supply of A671 CC60, CC65, and CC70 Electric Fusion Welded (EFW) Pipes—serving both domestic and global clients with the same precision and professionalism.
With years of experience in handling carbon steel piping solutions, we have built a reputation as one of India’s largest stockholders and premier suppliers of ASTM A671 Pipes. Our inventory includes a comprehensive range of A671 LSAW (Longitudinal Submerged Arc Welded) Pipes, available in custom sizes, wall thicknesses, and pressure ratings—ensuring suitability for everything from low-temperature fluid transportation to high-pressure pipelines in thermal plants and chemical facilities.
 
What makes ASTM A671 Pipes particularly useful is their origin: these pipes are manufactured using pressure vessel quality plates—the same high-grade steel plates used in making industrial boilers and vessels. The electric fusion welding process adds strength, while the optional heat treatment helps achieve specific mechanical properties. These pipes are not only durable and dimensionally accurate but also capable of withstanding stress in extreme conditions, whether it’s sub-zero temperatures or aggressive chemical exposure.
 

ASTM A671 Pipe Specification

ASTM A671 Pipe Specification
ASTM A671 /ASME SA671
Grades
Type
EFW (ELECTRIC FUSION WELDED PIPES)
Class Designation
CLASS 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42
Outer Diameter Size
16″ NB To 100″ NB (Nominal Bore Size)
Wall Thickness
Schedule 20 To Schedule XXS (Heavier On Request) Up to 250 mm Thickness
ASTM A671 EFW Pipes Length
5 To 7 Meters, 09 To 13 Meters, Single Random Length, Double Random Length And Customize Size.
Ends
Plain Ends / Beveled 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 / Colour Paint Coating / 3LPE Coating.
Other Testing
NACE MR0175, NACE TM0177, NACE TM0284, CHARPY V-NOTCH TEST, RADIOGRAPHIC EXAMINATION,
XRAY, ULTRASONIC EXAMINATION, LIQUID PENETRANT, MAGNETIC PARTICLE, HIC TEST, SSC TEST, SWC, H2 SERVICE, IBR, PWHT etc.
Dimension
All Pipes Is suppliers 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 / 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
suppliers 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
 ASTM A671 Pipe Equivalent
ASTM A671 EFW Pipes Types
Out diameter
Wall thickness
Length
ASTM A671 EFW Pipes (Custom Sizes)
1/2″ NB – 60″ NB
SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160
Custom
ASTM A671 Welded Pipes (in Stock + Custom Sizes)
1/2″ NB – 24″ NB
As per requirement
Custom
ASTM A671 ERW Pipe (Custom Sizes)
1/2″ NB – 24″ NB
As per requirement
Custom
ASTM A671 SAW Pipe
16″ NB – 100″ NB
As per requirement
Custom

ASTM A671 Pipe / Tube Size Chart

ASTM A671 EFW Pipes NB Sizes
Sch 5
Sch 10
Sch 40
Sch 80
Sch 160
ASTM A671 1/2
     
ASTM A671 3/4
     
ASTM A671 1
     
ASTM A671 1.25
     
ASTM A671 1.5
     
ASTM A671 2
     
ASTM A671 2.5
     
ASTM A671 3
     
ASTM A671 3.5
     
ASTM A671 4
     
ASTM A671 5
     
ASTM A671 6
     
ASTM A671 8
     
ASTM A671 10
     
ASTM A671 12
     
ASTM A671 14
     
ASTM A671 16
     
ASTM A671 18
     
ASTM A671 20
     
ASTM A671 22
     
ASTM A671 24
     

Mechanical Properties of ASTM A671 Pipe

Products
Steel Grade
BASE METAL MECHANICAL COMPOSITION
Welding point tensile strength (N/mm2)
Remarks
Yield point (N/mm2)
Tensile Stregth (N/mm2)
Test Pieces
Elongation (%)
Pipes for pressure service ASTM A671, A672
-/A45
-/165
-/310~450
–
-/30
-/310~450
A671/ A672
-/A50
-/185
-/345~485
-/28
-/345~485
CA55/A55
205
380~515
27
380~515
-/B55
-/205
-/380~515
-/27
-/380~515
CB60/B60
220
415~550
25
415~550
CB65/B65
240
450~585
23
450~585
CB70/B70
260
485~620
21
485~620
-/C55
-/205
-/380~515
-/27
-/380~515
CC60/C60
220
415~550
25
415~550
CC65/C65
240
450~585
23
450~585
CC70/C70
260
485~620
21
485~620

ASTM A671 Pipe Pressure Rating

Maximum working pressure of ASTM A671 Pipe at temperature 400°F
Maximum Allowable Pressure (psi)
NPS
Outside Diameter
Schedule
(in)
(in)
10
20
30
STD
40
60
XS
80
100
120
140
160
XXS
1/4
0.54
   
7985
7985
 
10798
10798
     
3/8
0.675
   
6606
6606
 
9147
9147
     
1/2
0.84
   
6358
6358
 
8575
8575
   
10908
17150
3/4
1.05
   
5273
5273
 
7187
7187
   
10220
14373
1
1.315
   
4956
4956
 
6670
6670
   
9316
13340
1 1/4
1.66
   
4133
4133
 
5638
5638
   
7380
11276
1 1/2
1.9
   
3739
3739
 
5158
5158
   
7247
10316
2
2.375
   
3177
3177
 
4498
4498
   
7097
8995
2 1/2
2.875
   
3460
3460
 
4704
4704
   
6391
9408
3
3.5
   
3024
3024
 
4200
4200
   
6132
8400
3 1/2
4
   
2769
2769
 
3896
3896
     
4
4.5
   
2581
2581
 
3670
3670
 
4769
 
5782
7339
5
5.563
   
2273
2273
 
3303
3303
 
4404
 
5505
6606
6
6.625
   
2071
2071
 
3195
3195
 
4157
 
5318
6390
8
8.625
 
1420
1574
1829
1829
2307
2841
2841
3375
4085
4613
5147
4971
10
10.75
 
1140
1399
1664
1664
2279
2279
2708
3277
3847
4558
5128
4558
12
12.75
 
961
1268
1441
1560
2160
1922
2644
3244
3843
4324
5042
3843
14
14
875
1092
1313
1313
1533
2079
1750
2625
3283
3829
4375
4921
 
16
16
766
956
1148
1148
1531
2009
1531
2585
3157
3733
4404
4882
 
18
18
681
849
1192
1021
1530
2042
1361
2553
3147
3743
4252
4848
 
20
20
613
919
1225
919
1455
1989
1225
2526
3138
3675
4288
4824
 
22
22
557
835
1114
835
 
1949
1114
2506
3063
3619
4176
4733
 
24
24
510
766
1147
766
1405
1978
1021
2489
3126
3700
4210
4786
 
30
30
510
817
1021
613
  
817
      
32
32
478
766
957
574
1054
        
34
34
450
721
901
540
992
        
36
36
425
681
851
510
1021
        
42
42
 
583
729
438
875
        
               
  • 1 in (inch) = 25.4 mm
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895×10-2 bar

Chemical Requirements of ASTM A671 Pipes & Tubes

Specification
Steel grade
Chemical composition
Remarks
C
Si
Mn
P
S
Ti
Pipes for pressure service
ASTM A671, A672
-/A45
-/0.17
–
0.98
0.035
0.035
–
A671/
A672
-/A50
-/0.22
–
CA55/A55
0.28
–
-/B55
-/0.20
0.13
~0.45
CB60/B60
0.24
CB65/B65
0.28
CB70/C70
0.31
1.30
-/C55
-/0.18
0.55
~0.98
CC60/C60
0.21
CC65/C65
0.24
0.79
~1.30
CC70/C70
0.27
 

ASTM A671 Pipe Schedule Chart & ASTM A671 Pipe weight

Size NPS
Pipe O.D.
Wall Thickness
Pipe I.D.
Weight per Foot
Standard to XXHY
Schedule
Pipe #
Section Modulus
Gallon Capacity Per Linear Foot
1/2
0.84
0.109
0.622
0.85
STD
40
.0407
.0158
 
 
0.147
0.546
1.09
XHY
80
.0478
.0122
 
 
0.188
0.464
1.31
 
160
.0528
.0088
 
 
0.294
0.252
1.72
XXHY
 
.0577
.0026
3/4
1.05
0.113
0.824
1.13
STD
40
.0705
.0277
 
 
0.154
0.742
1.48
XHY
80
.0853
.0225
 
 
0.219
0.612
1.95
 
160
.1006
.0153
 
 
0.308
0.434
2.44
XXHY
 
.1103
.0077
1
1.315
0.133
1.049
1.68
STD
40
.1328
.0449
 
 
0.179
0.957
2.17
XHY
80
.1606
.0374
 
 
0.250
0.815
2.85
 
160
.1904
.0271
 
 
0.358
0.599
3.66
XXHY
 
.2136
.0146
1 1/4
1.66
0.140
1.380
2.27
STD
40
.2346
.0777
 
 
0.191
1.278
3.00
XHY
80
.2913
.0666
 
 
0.250
1.160
3.77
 
160
.3421
.0549
 
 
0.382
0.896
5.22
 
 
.4110
.0328
1 1/2
1.90
0.145
1.610
2.72
STD
40
.3262
.1058
 
 
0.200
1.500
3.63
XHY
80
.4118
.0918
 
 
0.281
1.338
4.86
 
160
.5079
.0730
 
 
0.400
1.100
6.41
 
 
.5977
.0494
2
2.375
0.109
2.157
2.64
 
10
.4205
.1898
 
 
0.154
2.067
3.66
STD
40
.5606
.1743
 
 
0.218
1.939
5.03
XHY
80
.7309
.1534
 
 
0.250
1.875
5.68
 
 
.8045
.1434
 
 
0.281
1.813
6.29
 
 
.8666
.1344
 
 
0.344
1.687
7.47
 
160
.9806
.1161
 
 
0.436
1.503
9.04
XXHY
 
1.1043
.0922
2 1/2
2.875
0.120
2.635
3.53
 
10
.6870
.2833
 
 
0.203
2.469
5.80
STD.
40
1.0640
.2487
 
 
0.216
2.443
6.14
 
 
1.1169
.2435
 
 
0.250
2.375
7.02
 
 
1.2468
.2301
 
 
0.276
2.323
7.67
XHY
80
1.3386
.2202
 
 
0.375
2.125
10.02
 
160
1.6371
.1842
 
 
0.552
1.771
13.71
XXXHY
 
1.9971
.1280
3
3.50
0.120
3.260
4.34
 
 
1.0411
.4336
 
 
0.156
3.188
5.58
 
 
1.3122
.4147
 
 
0.172
3.156
6.12
 
 
1.4265
.4064
 
 
0.188
3.124
6.66
 
 
1.5342
.3984
 
 
0.216
3.068
7.58
STD.
40
1.7241
.3840
 
 
0.250
3.000
8.69
 
 
1.9372
.3672
 
 
0.281
2.938
9.67
 
 
2.1207
.3521
 
 
0.300
2.900
10.26
XHY
80
2.2253
.3431
 
 
0.438
2.624
14.34
 
160
2.8774
.2811
 
 
0.600
2.300
18.6
XXHY
 
3.4243
.2158
3 1/2
4.0
0.120
3.760
4.98
 
10
1.3776
.5768
 
 
0.226
3.548
9.12
STD.
140
2.3939
.5136
 
 
0.250
3.500
10.02
 
 
2.6001
.4998
 
 
0.281
3.438
11.17
 
 
2.8562
.4821
 
 
0.318
3.364
12.52
XHY
80
3.1400
.4617
 
 
0.636
2..728
22.87
XXHY
 
4.8795
.3085
4
4.5
0.120
4.260
5.62
 
10
1.7612
.7404
 
 
0.156
4.188
7.24
 
 
2.2354
.7156
 
 
0.188
4.124
8.67
 
 
2.6296
.6942
 
 
0.203
4.094
9.32
 
 
2.8173
.6838
 
 
0.219
4.062
10.02
 
 
3.0184
.6725
 
 
0.237
4.026
10.80
STD.
40
3.2145
.6613
 
 
0.250
4.000
11.36
 
 
3.3611
.6528
 
 
0.281
3.938
12.67
 
60
3.7021
.6326
 
 
0.312
3.876
13.97
 
 
4.0273
.6126
 
 
0.337
3.826
15.00
XHY
80
4.2713
.5972
 
 
0.438
3.624
19.02
 
120
5.1790
.5361
 
 
0.531
3.438
22.53
 
160
5.8997
.4822
 
 
0.674
3.152
27.57
XXHY
 
6.7927
.4054
5
5.563
0.188
5.187
10.80
 
 
4.1161
1.0979
 
 
0.219
5.125
12.51
 
 
4.7279
1.0716
 
 
0.258
5.047
14.63
STD.
40
5.4500
1.0391
 
 
0.281
5.001
15.87
 
 
5.8644
1.0204
 
 
0.312
4.939
17.51
 
 
6.4074
.99647
 
 
0.344
4.875
19.19
 
 
6.9358
.9696
 
 
0.375
4.813
20.80
XHY
80
7.4300
.9449
 
 
0.500
4.563
27.06
 
120
9.2534
.8495
 
 
0.625
4.313
32.99
 
160
10.7976
.7590
 
 
0.750
4.063
38.59
XXHY
 
12.0954
.6734
6
6.625
0.109
6.407
7.59
 
5
3.5769
1.6748
 
 
0.134
6.357
9.30
 
10
4.3475
1.6488
 
 
0.156
6.313
10.79
 
 
5.0107
1.6260
 
 
0.188
6.249
12.94
 
 
5.9351
1.5937
 
 
0.203
6.219
13.94
 
 
6.3804
1.5780
 
 
0.219
6.187
15.00
 
 
6.8261
1.5620
 
 
0.250
6.125
17.04
 
 
7.6905
1.5306
 
 
0.280
6.065
18.99
STD.
40
8.4958
1.5008
 
 
0.312
6.001
21.06
 
 
9.3416
1.4688
 
 
0.344
5.937
23.10
 
 
10.111
1.4391
 
 
0.375
5.875
25.05
 
 
10.893
1.4082
 
 
0.432
5.761
28.60
XHY
80
12.224
1.3541
 
 
0.500
5.625
32.74
 
 
13.711
1.2909
 
 
0.562
5.501
36.43
 
120
14.9806
1.2346
 
 
0.625
5.375
40.09
 
 
16.1821
1.1787
 
 
0.719
5.187
45.39
 
160
17.8243
1.0977
 
 
0.864
4.897
53.21
XXHY
 
20.025
.9784
 
 
1.000
4.625
60.13
 
 
21.7719
.8727
 
 
1.125
4.375
66.14
 
 
23.1237
.7809

ASTM A671 Pipe Price in India

  • Astm a671 efw welded Carbon steel pipe
    US $340-400 / Ton(FOB Price)
  • CS pipe ASTM A671 gr. cc60
    US $1000-2000 / Ton(FOB Price)
  • Astm A671 CS EFW Pipe
    US $400-1000 / Ton(FOB Price)
  • astm a671 square Carbon steel pipes
    US $300-500 / Ton(FOB Price)
  • CS pipe ASTM A671 gr. cc65
    US $300-500 / Ton (FOB Price)
  • CS pipe ASTM A671 gr. cc70
    US $305.0-420.0 / Tons(FOB Price)
  • ASTM A672 /A671 GR.C70 /GR.60 CL.12/22/32 LSAW steel pipe
    US $370-400 / Ton(FOB Price)
  • ASTM A671 PLASTIC COATED CARBON STEEL PIPE
    US $310-540 / Ton (FOB Price)
  • astm a671 cs pipe price
    US $340-440 / Ton(FOB Price)
  • astm a671 gr ce55 efw cs pipe
    US $480.0-480.0 / Tons(FOB Price)

ASTM A671 Carbon Steel EFW Pipe Class

Class
Heat treatment on pipe
RT
Pressure Test
Class 11
none
?
?
?
Class 12
none
?
?
?
Class 13
none
?
?
?
Class 20
stress relieved
PHWT
?
?
Class 21
stress relieved
PHWT
?
?
Class 22
stress relieved
PHWT
?
?
Class 23
stress relieved
PHWT
?
?
Class 30
normalized
?
?
Class 31
normalized
?
?
Class 32
normalized
?
?
Class 33
normalized
?
?
We are supplying ASTM A671 EFW Pipes to more than 60 locations worldwide at low cost due to reasonable man hours in India
 
Class
Heat Treatment on Pipe
Radiography
Pressure Test
Class 10
none
none
none
Class 11
none
9
none
Class 12
none
9
8.3
Class 13
none
none
8.3
Class 21
stress relieved, see 6.3.1
none
none
Class 21
stress relieved, see 6.3.1
9
none
Class 22
stress relieved, see 6.3.1
9
8.3
Class 23
stress relieved, see 6.3.1
none
8.3
Class 31
normalized, see 6.3.2
none
none
Class 31
normalized, see 6.3.2
9
none
Class 32
normalized, see 6.3.2
9
8.3
Class 33
normalized, see 6.3.2
none
8.3
Class 40
normalized and tempered, see 6.3.3
none
none
Class 43
normalized and tempered, see 6.3.3
9
none
Class 43
normalized and tempered, see 6.3.3
9
8.3
Class 43
normalized and tempered, see 6.3.3
none
8.3
Class 50
quenched and tempered, see 6.3.4
none
none
Class 51
quenched and tempered, see 6.3.4
9
none
Class 52
quenched and tempered, see 6.3.4
9
8.3
Class 53
quenched and tempered, see 6.3.4
none
8.3
Class 60
normalized and precipitation heat none none treated
none
none
Class 61
normalized and precipitation heat none none treated
9
none
Class 62
normalized and precipitation heat none none treated
9
8.3
Class 63
normalized and precipitation heat none none treated
none
8.3
Class 70
normalized and precipitation heat none none treated
none
none
Class 71
normalized and precipitation heat none none treated
9
none
Class 72
normalized and precipitation heat none none treated
9
8.3
Class 73
normalized and precipitation heat none none treated
none
8.3
Our stock range includes ASTM A671 Efw Pipes and ASTM A671 Pipe Suppliers if you are looking for, check price before buying
 

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Supplies from Different Countries

Supplies from Different Countries

Flag Country Code
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