ASTM A106 Grade B Pipe

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Product Overview

ASTM A106 Grade B Pipe is a seamless carbon steel pipe manufactured for high-temperature service, pressure piping, process systems and demanding industrial applications. It is specified under ASTM A106/A106M and is suitable for welding, bending, flanging and similar forming operations when the appropriate fabrication procedure is followed.

The ASTM A106 Grade B Seamless Pipe combines reliable strength, ductility and high-temperature performance, making it widely used in oil refineries, petrochemical plants, power generation facilities, boiler systems, process piping, pressure vessels and general engineering applications. Grade B provides a minimum tensile strength of 415 MPa and a minimum yield strength of 240 MPa.

ASME SA106 Grade B Pipe is available in a broad range of nominal pipe sizes and wall thicknesses in accordance with ASME B36.10M. Standard schedules include SCH 10, SCH 20, SCH 30, STD, SCH 40, SCH 60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160 and XXS, subject to size availability.

OM Export India Pvt Ltd supplies ASTM A106 Gr B Seamless Pipe in standard and customized lengths, outside diameters, schedules and end configurations. Pipes can be supplied with plain ends, beveled ends, threaded ends where applicable, protective end caps and surface protection according to project requirements.

The material is manufactured and tested according to applicable ASTM requirements. Inspection documentation can include Mill Test Certificates, EN 10204 3.1 certification, chemical analysis, mechanical test reports, hydrostatic test reports and third-party inspection documentation when specified in the purchase order.

Note: ASTM A106/A106M specifically covers seamless carbon steel pipe for high-temperature service. Welded or ERW products should be specified under their applicable product standard rather than represented as ASTM A106 pipe.

Key Features

ASTM A106 Grade B compliant seamless carbon steel construction
Designed for high-temperature and pressure-service applications
Minimum tensile strength of 415 MPa
Minimum yield strength of 240 MPa
Excellent weldability and fabrication characteristics when correctly processed
Suitable for bending, flanging and forming operations as specified by the standard
Wide range of NPS sizes and pipe schedules
Available in plain and beveled end configurations
Custom cut lengths available as per project requirements
Suitable for refinery, petrochemical, power and process piping systems
Optional anti-rust oil, black coating and project-specific surface protection
Mill Test Certificate and inspection documentation available as required
Third-party inspection through recognized agencies available on request

Product Specifications

Property	Specification
Product Name	ASTM A106 Grade B Pipe
Material Type	Carbon Steel
Grade	ASTM A106 Grade B / ASME SA106 Grade B
Product Standard	ASTM A106/A106M
Dimensional Standard	ASME B36.10M
Manufacturing Process	Seamless; hot-finished or cold-drawn as applicable
Nominal Pipe Size	NPS 1/8 to NPS 48
Schedules	SCH 10, SCH 20, SCH 30, STD, SCH 40, SCH 60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS
Length	Single Random, Double Random and Cut-to-Length as specified
Standard Length Range	Approximately 5–7 m commonly available; other lengths subject to order
End Type	Plain End, Beveled End; Threaded End where applicable
Surface	Bare, Black Varnished, Oiled, Anti-Rust Coated or Project-Specified Coating
Heat Treatment	As required by ASTM A106/A106M based on manufacturing method and dimensions
Tensile Strength	Minimum 415 MPa
Yield Strength	Minimum 240 MPa
Elongation	As specified by ASTM A106/A106M and applicable specimen type
Testing	Tensile, Hydrostatic, Bend, Flattening and Nondestructive Electric Testing as applicable
Inspection	Visual, Dimensional, Chemical and Mechanical Inspection
Certification	Mill Test Certificate / EN 10204 3.1 / Third-Party Inspection on Request
Customization	Custom Size, Schedule, Length, End Finish and Surface Protection

Dimensions & Sizes

NPS	DN	Outside Diameter (mm)	SCH 40 Wall (mm)	SCH 80 Wall (mm)	SCH 160 Wall (mm)	XXS Wall (mm)
1/2"	15	21.3	2.77	3.73	4.78	7.47
3/4"	20	26.7	2.87	3.91	5.56	7.82
1"	25	33.4	3.38	4.55	6.35	9.09
1 1/4"	32	42.2	3.56	4.85	6.35	9.70
1 1/2"	40	48.3	3.68	5.08	—	10.15
2"	50	60.3	3.91	5.54	8.74	—
2 1/2"	65	73.0	5.16	7.01	9.53	14.02
3"	80	88.9	5.49	7.62	11.13	15.24
3 1/2"	90	101.6	5.74	8.08	—	—
4"	100	114.3	6.02	8.56	13.49	17.12
5"	125	141.3	6.55	9.53	15.88	—
6"	150	168.3	7.11	10.97	18.26	21.95
8"	200	219.1	8.18	12.70	23.01	22.23
10"	250	273.1	9.27	15.09	28.58	25.40
12"	300	323.9	10.31	17.48	33.32	25.40

Note: Additional NPS sizes, schedules, wall thicknesses and custom dimensions can be supplied according to ASME B36.10M and project requirements.

Chemical Composition

Element	ASTM A106 Grade B Requirement	Unit
Carbon (C)	0.30 Max.	%
Manganese (Mn)	0.29–1.06	%
Phosphorus (P)	0.035 Max.	%
Sulfur (S)	0.035 Max.	%
Silicon (Si)	0.10 Min.	%
Chromium (Cr)	0.40 Max.	%
Copper (Cu)	0.40 Max.	%
Molybdenum (Mo)	0.15 Max.	%
Nickel (Ni)	0.40 Max.	%
Vanadium (V)	0.08 Max.	%
Cr + Cu + Mo + Ni + V	1.00 Max.	% Combined

Mechanical Properties

Mechanical Property	ASTM A106 Grade B Requirement	Unit
Tensile Strength	415 Min.	MPa
Yield Strength	240 Min.	MPa
Tensile Strength	60,000 Min.	psi
Yield Strength	35,000 Min.	psi
Elongation	As per ASTM A106/A106M specimen and dimensional requirements	%
Manufacturing Condition	Hot-Finished or Cold-Drawn as applicable	—
Hydrostatic Test	Required unless an approved nondestructive electric test option is specified	—

Standards & Specifications

ASTM A106/A106M – Seamless Carbon Steel Pipe for High-Temperature Service
ASME SA106 – Carbon Steel Pipe for High-Temperature Service
ASME B36.10M – Welded and Seamless Wrought Steel Pipe Dimensions
EN 10204 – Metallic Products Inspection Documents
ASME B31.3 – Process Piping, where applicable to the project
ASME B31.1 – Power Piping, where applicable to the project

Additional inspection, coating and testing standards can be incorporated according to the applicable project specification and purchase order.

Applications

ASTM A106 Grade B Pipe is widely selected for industrial systems where reliable pressure containment and elevated-temperature service are required.

Oil and gas refineries
Petrochemical and chemical processing plants
Thermal power generation plants
Steam and high-temperature process piping
Boiler and heat exchanger piping systems
Pressure vessel piping
Process and utility pipelines
Petroleum processing equipment
Industrial fluid and gas transportation
Steel manufacturing plants
Sugar processing plants
General engineering and fabrication applications
Water and utility service systems where the specified design conditions are suitable

The final pipe grade, wall thickness, schedule and allowable operating conditions should always be selected according to the applicable piping code, design temperature, pressure, fluid service and project specification.

Frequently Asked Questions

What is ASTM A106 Grade B Pipe?

ASTM A106 Grade B Pipe is a seamless carbon steel pipe specification designed primarily for high-temperature service. It is commonly used in process piping, refineries, petrochemical facilities and power plants.

Is ASTM A106 Grade B Pipe seamless?

Yes. ASTM A106/A106M is a specification for seamless carbon steel pipe for high-temperature service. Welded and ERW pipes are manufactured and specified under other applicable standards.

What is the tensile strength of A106 Grade B?

ASTM A106 Grade B has a minimum tensile strength of 415 MPa (60,000 psi).

What is the yield strength of ASTM A106 Grade B?

The minimum yield strength of ASTM A106 Grade B is 240 MPa (35,000 psi).

Which schedules are available for ASTM A106 Grade B Pipe?

ASTM A106 Grade B can be supplied in schedules including SCH 10, SCH 20, SCH 30, STD, SCH 40, SCH 60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160 and XXS, subject to nominal pipe size and availability.

What is the difference between ASTM A106 Grade B and ASME SA106 Grade B?

ASME SA106 Grade B is the ASME-adopted designation corresponding to ASTM A106 Grade B for applications covered by the relevant ASME construction codes. Material requirements should be confirmed against the governing project code and purchase specification.

Can A106 Grade B Pipe be welded?

Yes. ASTM A106 pipe is suitable for welding when an appropriate welding procedure is selected for the grade, wall thickness and intended service conditions.

Can ASTM A106 Grade B Pipe be customized?

Yes. Custom lengths, schedules, end finishes, surface protection, inspection requirements and other project-specific requirements can be supplied subject to manufacturing and procurement feasibility.

What inspection certificates are available?

Documentation can include Mill Test Certificate, EN 10204 3.1 certificate, chemical analysis, mechanical test reports, hydrostatic test reports, dimensional inspection reports and third-party inspection reports when specified.