Carbon Steel Seamless Pipe

Carbon steel pipe manufacturers in India
ISO Certified Manufacturer

Carbon Steel Seamless Pipe

Carbon steel seamless pipe is manufactured without a longitudinal welded seam, making it a widely used piping product for applications requiring pressure-containing capability, structural strength, and dependable performance.

Seamless carbon steel pipes are produced from carbon steel and are available in different grades, outside diameters, wall thicknesses, lengths, and specifications. The appropriate grade and specification depend on the intended service, pressure, temperature, fluid, installation conditions, and applicable standards.

Carbon steel seamless pipe is commonly used across oil and gas, petrochemical, power generation, water, process, construction, and industrial piping applications.

For buyers searching for a carbon steel seamless pipe manufacturer, the selection process should consider not only price but also material traceability, manufacturing specification, inspection requirements, testing, documentation, dimensional accuracy, and project compliance.

Spark Steel can support project-specific requirements for carbon steel pipes and related steel products, subject to technical and commercial confirmation.

20+
Years of Experience
50+
Grades in Stock
1/8"–2–4"
Size Range
100%
Quality Tested

Carbon steel pipe specification chart

Carbon steel pipe specification chart

SPECIFICATIONDETAILS
SizesOD : 1/2" to 60"
Thickness2 mm to 45 mm
Temperature rangesup to 800°F
FormsCoiled, Straight, Hollow, U Shape, Hydraulic, Rectangular, Round, Square
Welding methodMAG, GMAW, TIG, MIG, FCAW, SMAW
ScheduleSCH 10 to SCH 160
FinishBA polishing, Mirror, 2B, Matt finish, Annealed & Pickled, Bright Annealed, No.4, Solution annealed
TestingPMI , Flattening , Chemical Analysis, Flaring ,UT, Hardness Testing
Finishing TreatmentCold Finished, Hot Finished
Carbon steel pipe

Carbon steel pipe

CS seamless pipe

CS seamless pipe

SCH 40 CS erw pipe

SCH 40 CS erw pipe

Carbon steel welded pipe

Carbon steel welded pipe

Black coated carbon steel pipe

Black coated carbon steel pipe

Carbon steel square pipe

Carbon steel square pipe

Carbon steel pipe price per kg

Carbon steel pipe price per kg

Description Price in USD Price in Kilogram (INR)
Round Carbon Steel Pipes, Size: 0-1 inch $ 0.70 ₹ 60
CS Pipes, Size: 2" - 24"Thickness: 2 MM To 50 MM, $ 0.76 ₹ 65
Carbon Steel Pipe Mill Finish , Thickness: 1.0 MM to 12.0 MM, $ 0.61 ₹ 52
Hot Rolled Carbon Steel Seamless Pipes, Thickness: 3mm To 25mm $ 1.05 ₹ 90

CS pipe weight chart

CS pipe weight chart

Pipe size ID Section Modulus Weight OD WT Sched Standard to XXHY
1 1/4 1.380 .2346 2.27 1.66 0.140 40 STD
1.160 .3421 3.77 0.250 160
1 1/2 1.610 .3262 2.72 1.90 0.145 40 STD
1.338 .5079 4.86 0.281 160
3 1/2 3.760 1.3776 4.98 4.0 0.120 10
3.500 2.6001 10.02 0.250
3.364 3.1400 12.52 0.318 80 XHY
4 4.260 1.7612 5.62 4.5 0.120 10
4.124 2.6296 8.67 0.188
4.062 3.0184 10.02 0.219
4.000 3.3611 11.36 0.250
3.876 4.0273 13.97 0.312
3.624 5.1790 19.02 0.438 120
5 5.187 4.1161 10.80 5.563 0.188
5.047 5.4500 14.63 0.258 40 STD.
4.939 6.4074 17.51 0.312
4.813 7.4300 20.80 0.375 80 XHY
2 2.157 .4205 2.64 2.375 0.109 10
1.939 .7309 5.03 0.218 80 XHY
1.813 .8666 6.29 0.281
2 1/2 2.635 .6870 3.53 2.875 0.120 10
2.443 1.1169 6.14 0.216
2.323 1.3386 7.67 0.276 80 XHY
3 3.260 1.0411 4.34 3.50 0.120
3.156 1.4265 6.12 0.172
3.068 1.7241 7.58 0.216 40 STD.
2.938 2.1207 9.67 0.281
1/2 0.622 .0407 0.85 0.84 0.109 40 STD
3/4 0.824 .0705 1.13 1.05 0.113 40 STD
0.612 .1006 1.95 0.219 160
1 1.049 .1328 1.68 1.315 0.133 40 STD
0.815 .1904 2.85 0.250 160
6 6.407 3.5769 7.59 6.625 0.109 5
6.313 5.0107 10.79 0.156
6.219 6.3804 13.94 0.203
6.125 7.6905 17.04 0.250
6.001 9.3416 21.06 0.312
5.875 10.893 25.05 0.375
5.625 13.711 32.74 0.500
5.375 16.1821 40.09 0.625
4.897 20.025 53.21 0.864 XXHY
4.375 23.1237 66.14 1.125

Carbon steel pipe application

  • Construction & infrastructure
  • Water & sewage systems
  • Power plants & energy
  • Marine & shipbuilding
  • Chemical & petrochemical industry
  • Oil & gas industry

Schedule 160 carbon steel pipe pressure rating

Schedule 160 carbon steel pipe pressure rating

Nominal pipes Size in Inch Schedule 160 Outside Diameter in MM
2 1/2 2.875
73
3 1/2 4
102
3 3.5
88.9
4 4.5
114
6 6.625
168
5 5.563
141
8 1420
9791 		8.625
219
12 961
6626 		12.75
324
10 1140
7860 		10.75
273
3/8 0.675
17.1
1/4 0.54
13.7
1/2 0.84
21.3
1 1.315
33.4
3/4 1.05
26.7
1 1/4 1.66
42.2
2 2.375
60.3
1 1/2 1.9
48.3
14 1092
7529 		14
356
18 849
5854 		18
457
16 956
6592 		16
406
20 919
6337 		20
508
24 766
5282 		24
610
22 835
5757 		22
559
30 817
5633 		30
762
34 721
4971 		34
864
32 766
5282 		32
813
42 583
4020 		42
1067
36 681
4695 		36
914

Schedule 40 cs pipe pressure rating

Schedule 40 cs pipe pressure rating

Maximum Allowable Pressure (psi) (kPa)
NPS Outside Diameter (OD) Schedule
(in) (in)
(milimeter) 		40
1 1/2 1.9
48.3 		3739
25780
2 2.375
60.3 		3177
21905
2 1/2 2.875
73 		3460
23857
3 3.5
88.9 		3024
20850
3 1/2 4
102 		2769
19092
4 4.5
114 		2581
17796
1/4 0.54
13.7 		7985
55057
3/8 0.675
17.1 		6606
45548
1/2 0.84
21.3 		6358
43838
3/4 1.05
26.7 		5273
36357
1 1.315
33.4 		4956
34172
1 1/4 1.66
42.2 		4133
28497
5 5.563
141 		2273
15672
6 6.625
168 		2071
14280
8 8.625
219 		1829
12611
10 10.75
273 		1664
1144/td>
12 12.75
324 		1560
10756
14 14
356 		1533
10570
16 16
406 		1531
10556
18 18
457 		1530
10549
20 20
508 		1455
10032
22 22
559
24 24
610 		1405
9687
30 30
762
32 32
813 		1054
7267
34 34
864 		992
6840
36 36
914 		1021
7040
42 42
1067 		875
6033

CS pipe grades

Difference between carbon steel and black steel pipe

Difference between carbon steel and black steel pipe

Parameter Carbon Steel Pipe Black Steel Pipe
Material Composition Iron + Carbon (0.05% - 2.0%) Low Carbon Steel with Iron Oxide Coating
Yield Strength 250 - 600 MPa 210 - 350 MPa
Hardness (Brinell HB) 120 - 250 HB 100 - 180 HB
Weldability Good Excellent
Manufacturing Process Seamless (Hot-rolled) or Welded (ERW, LSAW, SSAW) Typically Welded (ERW)
Surface Coating Galvanized, Uncoated, or Coated (Epoxy, Paint) Black Oxide (formed during manufacturing)
Tensile Strength 400 - 1000 MPa 250 - 500 MPa
Pressure Rating Higher, suitable for high-pressure applications Lower, not suitable for high-pressure applications
Temperature Resistance Suitable for high-temperature use Limited to moderate temperatures
Applications Oil & Gas pipelines, Boilers, Power Plants, Structural Low-pressure Water & Gas Distribution, Fire Sprinkler Systems, HVAC

Seamless CS pipe hardness

  • Brinell Hardness (HBW): 120 - 200 HB
  • Rockwell Hardness (HRB): 55 - 85 HRB
  • Rockwell Hardness (HRC): ≤ 22 HRC

Carbon steel pipe astm standard

Carbon steel pipe astm standard

ASTM Standard Type
ASTM A106 Seamless
ASTM A252 Welded (ERW, SSAW)
ASTM A671 / A672 Welded (EFW)
ASTM A500 Welded (ERW)
ASTM A501 Welded / Seamless
ASTM A333 Seamless
ASTM A335 Seamless
ASTM A519 Seamless
ASTM A53 Seamless / Welded (ERW)
ASTM A134 Welded (EFW)
ASTM A847 Welded / Seamless
ASTM A588 Welded / Seamless

CS seamless pipe schedule chart

CS seamless pipe schedule chart

Size
(inch) 		OD
in
(inch) 		OD
in
milimeter
Sched 40 Sched Sch. Sched 60 Sched 80 Sched XS Sched 120 Sched 160 Sched XXS
2 2.375 60.3 0.154
3.66 		0.154
3.66 		0.218
5.03 		0.218
5.03 		0.344
7.47 		0.436
9.04
3 3.500 88.9 0.216
7.58 		0.216
7.58 		0.300
10.26 		0.300
10.26 		0.438
14.34 		0.600
18.60
1/8 0.405 10.3 0.068
.024 		0.068
.024 		0.095
0.31 		0.095
0.31
3/8 0.675 17.1 0.091
0.57 		0.091
0.57 		0.126
0.74 		0.126
0.74
3/4 1.050 26.7 0.113
1.13 		0.113
1.13 		0.154
1.48 		0.154
1.48 		0.219
1.95 		0.308
2.44
1-1/4 1.660 42.2 0.140
2.27 		0.140
2.27 		0.191
3.00 		0.191
3.00 		0.250
3.77 		0.382
5.22
4 4.500 114.3 0.237
10.80 		0.237
10.80 		0.281
12.67 		0.337
15.00 		0.337
15.00 		0.438
19.02 		0.531
22.53 		0.674
27.57
6 6.625 168.3 0.280
18.99 		0.280
18.99 		0.432
28.60 		0.432
28.60 		0.562
36.43 		0.719
45.39 		0.864
53.21

Carbon steel pipe vs mild steel pipe

Carbon steel pipe vs mild steel pipe

Factor Carbon Steel Pipe Mild Steel Pipe
Hardness (Brinell HB) 120 - 250 HB 100 - 180 HB
Ductility Less ductile More ductile and flexible
Weldability Medium to difficult Excellent
Machinability Moderate to poor Excellent
Carbon Content 0.05% - 2.0% ≤ 0.25% (Low Carbon Steel)
Tensile Strength 400 - 1000 MPa 250 - 400 MPa
Yield Strength 250 - 600 MPa 210 - 250 MPa
Production Methods Seamless, ERW, LSAW, SSAW Seamless, ERW, LSAW
Heat Treatment May require heat treatment Rarely requires heat treatment
Corrosion Resistance Needs coating or alloying elements Poor, often painted or galvanized
Durability High, suitable for extreme conditions Lower, best for mild environments
Cost Higher due to strength & durability Lower due to ease of manufacturing
Common Applications High-pressure pipelines, power plants, structural support General construction, water pipes, fencing

Carbon steel pipe manufacturing process

Carbon steel pipe manufacturing process

CS pipe dimensions chart

CS pipe dimensions chart

Nominal Pipe Size [inches] Outside diameter [inches] Wall thickness [mm] Weight [lb/ft] Outside diameter [mm] Wall thickness [inches] Weight [kg/m]
2 1/2 2.875 5.16 MM 5.79 73.0 MM 0.203 8.63
3 3.500 5.49 MM 7.58 88.9 MM 0.216 11.29
3 1/2 4.000 5.74 MM 9.11 101.6 MM 0.226 13.57
4 4.500 6.02 MM 10.79 114.3 MM 0.237 16.07
5 5.563 6.55 MM 14.62 141.3 MM 0.258 21.77
6 6.625 7.11 MM 18.97 168.3 MM 0.280 28.26
8 8.625 8.18 MM 28.55 219.1 MM 0.322 42.55
10 10.750 9.27 MM 40.48 273.0 MM 0.365 60.31
12 12.750 10.31 MM 53.52 323.8 MM 0.406 79.73
14 14 11.13 MM 54.57 355.6 MM 0.375 94.55
1/8 0.405 1.73 MM 0.24 10.3 MM 0.068 0.37
1/4 0.540 2.24 MM 0.42 13.7 MM 0.088 0.84
1/2 0.840 2.77 MM 0.85 21.3 MM 0.109 1.27
3/4 1.050 2.87 MM 1.13 26.7 MM 0.113 1.69
1 1.315 3.38 MM 1.68 33.4 MM 0.133 2.50
1 1/4 1.660 3.56 MM 2.27 42.2 MM 0.140 3.39
1 1/2 1.900 3.68 MM 2.72 48.3 MM 0.145 4.05
2 2.375 3.91 MM 3.65 60.3 MM 0.154 5.44
16 16 12.70 MM 82.77 406.4 MM 0.500 123.30
18 18 14.27 MM 104.67 457.0 MM 0.562 155.80
20 20 15.09 MM 123.11 508.0 MM 0.594 183.42
24 24 17.48 MM 171.29 610.0 MM 0.688 255.41
32 32 17.48 MM 230.08 813.0 MM 0.688 342.91

CS seamless pipe thickness chart

CS seamless pipe thickness chart

NPS
(Inches) 		Outside Dia
(Inches)
 Schedules
Schedule 10 Schedule 20 Schedule 30 Schedule STD Schedule 40 Schedule 60 Schedule XS Schedule 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 Schedule XXS
Wall Thk(Inch)
3 3.500 0.216 0.216 0.300 0.300 0.438 0.600
3 1/2 4.000 0.226 0.226 0.318 0.318
4 4.500 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.258 0.258 0.375 0.375 0.500 0.625 0.750
6 6.625 0.280 0.280 0.432 0.432 0.562 0.719 0.864
8 8.625 0.250 0.277 0.322 0.322 0.406 0.500 0.500 0.594 0.719 0.812 0.906 0.875
10 10.750 0.250 0.307 0.365 0.365 0.500 0.500 0.594 0.719 0.844 1.000 1.125 1.000
12 12.750 0.250 0.330 0.375 0.406 0.562 0.500 0.688 0.844 1.000 1.125 1.312 1.000
14 14.000 0.250 0.312 0.375 0.375 0.438 0.594 0.500 0.750 0.938 1.094 1.250 1.406
16 16.000 0.250 0.312 0.375 0.375 0.500 0.656 0.500 0.844 1.031 1.219 1.438 1.594
18 18.000 0.250 0.312 0.438 0.375 0.562 0.750 0.500 0.938 1.156 1.375 1.562 1.781
1/8 0.405 0.068 0.068 0.095 0.095
1/4 0.540 0.088 0.088 0.119 0.119
3/8 0.675 0.091 0.091 0.126 0.126
1/2 0.840 0.109 0.109 0.147 0.147 0.187 0.294
3/4 1.050 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.133 0.133 0.179 0.179 0.250 0.358
1 1/4 1.660 0.140 0.140 0.191 0.191 0.250 0.382
1 1/2 1.900 0.145 0.145 0.200 0.200 0.281 0.400
2 2.375 0.154 0.154 0.218 0.218 0.344 0.436
2 1/2 2.875 0.203 0.203 0.276 0.276 0.375 0.552
20 20.000 0.250 0.375 0.500 0.375 0.594 0.812 0.500 1.031 1.281 1.500 1.750 1.969
22 22.000 0.250 0.375 0.500 0.375 0.875 0.500 1.125 1.375 1.625 1.875 2.125
24 24.000 0.250 0.375 0.562 0.375 0.688 0.969 0.500 1.219 1.531 1.812 2.062 2.344
30 30.000 0.312 0.500 0.625 0.375 0.500
32 32.000 0.312 0.500 0.625 0.375 0.688
34 34.000 0.312 0.500 0.625 0.375 0.688
36 36.000 0.312 0.500 0.625 0.375 0.750
42 42.000 0.500 0.625 0.375 0.750

Carbon steel pipe absolute roughness

Carbon steel pipe absolute roughness

Material Roughness (mm)
CS (Slightly Corroded) 0.05-0.15
CS (Badly Corroded) 1-3
CS (Moderately Corroded) 0.15-1
CS (New) 0.02-0.05
CS (Cement-lined) 1.5

Sch 80 cs pipe pressure rating

Sch 80 cs pipe pressure rating

Pipes Size in inch Schedule 80 Thickness
Outer diameter in inch. Inner diameter in inch Wall Thickness in inch
2 2.375 2.245 0.065
2-1/2 2.875 2.709 0.083
3 3.500 3.334 0.083
3-1/2 4.000 3.834 0.083
3/4 1.050 0.920 0.065
1 1.315 1.185 0.065
1-1/4 1.660 1.530 0.065
1-1/2 1.900 1.770 0.065
4 4.500 4.334 0.083
6 6.625 6.407 0.109
8 8.625 8.407 0.109

Carbon steel pipe temperature range

  • Up to 650°C
  • Upto 1202°F

Carbon steel seamless pipe hsn code

Carbon steel seamless pipe hsn code

HSN Code 7304

Carbon steel pipe thermal conductivity

45 to 60 W/m·K

What Is Carbon Steel Seamless Pipe?

A carbon steel seamless pipe is a pipe manufactured from carbon steel without forming a longitudinal welded joint.

The manufacturing process generally involves producing a solid steel billet and forming it into a hollow pipe through processes such as piercing, followed by rolling or other controlled forming operations.

Because there is no longitudinal weld seam, seamless pipe is often selected for applications where the pipe specification requires seamless construction.

Main characteristics include:

  • Carbon steel construction
  • No longitudinal weld seam
  • Good strength
  • Availability in various grades
  • Wide range of dimensions
  • Suitable for many pressure and process applications
  • Available according to different international specifications

The actual mechanical, chemical, pressure, and temperature performance depends on the specific steel grade and applicable product specification.

How Is Carbon Steel Seamless Pipe Manufactured?

A typical seamless pipe manufacturing route can involve the following stages:

  1. Steel Billet
    A suitable carbon steel billet is selected according to the required product specification and grade.
  2. Heating
    The billet is heated to the required temperature for hot working.
  3. Piercing
    A rotary piercing process can be used to convert the solid billet into a hollow shell.
  4. Rolling and Elongation
    The hollow shell is further processed to achieve the required outside diameter and wall thickness.
  5. Sizing
    The pipe is sized to achieve the specified dimensional requirements.
  6. Heat Treatment
    Where required by the product specification, heat treatment is performed according to the specified grade and manufacturing requirements.
  7. Straightening
    The pipe is straightened to meet applicable dimensional and straightness requirements.
  8. Inspection and Testing
    The finished pipe undergoes applicable dimensional, visual, mechanical, chemical, and other specified inspections.
  9. Marking and Traceability
    Pipe identification and traceability information are applied according to the relevant specification.
  10. Packing
    Pipes are prepared for transportation according to customer and project requirements.

Key Features of Carbon Steel Seamless Pipe

Seamless Construction
The pipe is manufactured without a longitudinal welded seam.

High Strength
Carbon steel provides useful strength characteristics for many industrial applications.

Pressure Applications
Appropriately specified seamless carbon steel pipe can be used in pressure-containing services.

Dimensional Availability
Carbon steel seamless pipes are available in a wide range of outside diameters and wall thicknesses.

Multiple Grades
Different carbon steel grades can be selected according to temperature, pressure, mechanical, and service requirements.

Industrial Versatility
Carbon steel seamless pipes are used across numerous industrial sectors.

Applications of Carbon Steel Seamless Pipe

Carbon steel seamless pipes are commonly used in:

Oil & Gas

  • Hydrocarbon transportation
  • Process piping
  • Pipeline infrastructure
  • Refineries

Petrochemical

  • Process systems
  • Fluid transportation
  • Industrial piping

Power Generation

  • Steam-related systems
  • Boiler-related applications
  • High-temperature piping where the specified grade is suitable

Water and Utilities

  • Water transportation
  • Industrial utility systems
  • Infrastructure projects

Construction

  • Structural applications
  • Mechanical systems
  • Industrial fabrication

General Engineering

  • Equipment manufacturing
  • Pressure-containing systems
  • Industrial machinery
  • Fabrication projects

Application suitability depends on grade, dimensions, operating conditions, and applicable standards.

Quality Control for Carbon Steel Seamless Pipe

Quality assurance is an important part of seamless pipe procurement.

A project-specific inspection program may include:

Chemical Analysis
Verification of chemical composition against the specified grade.

Mechanical Testing
Testing may include tensile, yield, elongation, hardness, or impact testing where required.

Dimensional Inspection
Checking:

  • Outside diameter
  • Wall thickness
  • Length
  • Straightness
  • End condition

Visual Inspection
Checking the pipe surface for unacceptable defects or damage.

Non-Destructive Testing
Where required, applicable NDT methods may be specified according to the product standard and project requirements.

Hydrostatic Testing
Where required by the applicable specification, hydrostatic or alternative pressure testing may be conducted.

Material Traceability
Heat number, grade, size, and other identification information should be maintained according to the applicable quality system.

Mill Test Certificate
The MTC provides material and testing information relevant to the supplied product and should be reviewed against the purchase specification.

How to Select Carbon Steel Seamless Pipe

Before purchasing, evaluate the following factors:

  1. Application
    Determine whether the pipe is intended for pressure, process, structural, utility, or another application.
  2. Grade
    Select the appropriate carbon steel grade according to temperature, pressure, mechanical requirements, and service environment.
  3. Specification
    Confirm the required ASTM, ASME, API, or project specification.
  4. Size
    Specify nominal pipe size, outside diameter, wall thickness, and schedule where applicable.
  5. Temperature and Pressure
    Operating conditions are important for determining the appropriate pipe specification and grade.
  6. Corrosion Environment
    Consider internal fluid and external environmental exposure.
  7. Testing
    Confirm required mechanical, hydrostatic, NDT, dimensional, and other inspection requirements.
  8. Documentation
    Establish requirements for MTCs, inspection reports, test certificates, and traceability.

Carbon Steel Seamless Pipe Manufacturer

When choosing a carbon steel seamless pipe manufacturer, buyers should evaluate technical capability and quality processes rather than selecting solely on price.

Important considerations include:

  • Manufacturing or sourcing capability
  • Experience with required specifications
  • Material traceability
  • Quality-control procedures
  • Inspection and testing
  • Dimensional control
  • Third-party inspection capability, where required
  • MTC and documentation
  • Packaging and logistics
  • Project-specific technical support

A reliable supplier should review the complete technical specification before confirming the product.

Why Choose Spark Steel?

Spark Steel operates in the steel products and industrial piping sector and can support customers with project-specific carbon steel pipe requirements.

The company states that it has 35+ years of industry experience, has supported 500+ projects, and maintains ISO 9001 and ISO 14001 certification.

For carbon steel seamless pipe requirements, customers can provide their complete technical and commercial specifications for evaluation.

Spark Steel can support requirements involving:

  • Carbon steel pipes
  • Seamless steel pipes
  • Stainless steel pipes
  • Alloy steel pipes
  • Pipeline products
  • Industrial piping requirements
  • Project-specific specifications
  • Inspection and testing requirements
  • Material documentation

Product grade, manufacturing route, testing, certification, quantity, and delivery requirements should be confirmed for each individual order.

Frequently Asked Questions About Carbon Steel Seamless Pipe

A carbon steel seamless pipe is a pipe made from carbon steel without a longitudinal welded seam.

It is commonly used for industrial, pressure, process, oil and gas, power, construction, and utility applications, depending on the grade and specification.

Seamless pipe is manufactured without a longitudinal weld, while welded pipe is produced by forming steel and joining it with a weld.

Strength depends on the material grade, manufacturing specification, dimensions, and applicable testing requirements. Seamless construction does not automatically mean that every seamless pipe is stronger than every welded pipe.

Available grades depend on the applicable specification. Examples include ASTM A106 Grade B and other grades covered by relevant ASTM/API specifications.

ASTM A106 Grade B is a seamless carbon steel pipe specification/grade combination commonly used for high-temperature service.

Depending on the application, standards may include ASTM A106, ASTM A53, ASTM A333, ASME dimensional standards, API specifications, and project-specific requirements.

Depending on the specification, tests may include chemical analysis, tensile testing, dimensional inspection, hydrostatic testing, hardness testing, impact testing, visual inspection, and NDT.

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