Introduction
ASTM A106 Grade B seamless steel pipe is a seamless carbon steel pipe for high-temperature service, widely used in pressure systems for transporting fluids and gases in power, petrochemical, and oil & gas industries.
| Grade | 20# Q345B Q355B 27simn 35crmo 42crmo 15crmo, etc. | |||
| Standard | ASTM/JIS/AISI/DIN/BS/En/GB | |||
| Tolerance | ±1% | |||
| Outer Diameter | 6mm - 1220mm, can be customized | |||
| Thickness | 1mm - 100mm, can be customized | |||
| Length | 6m, 12m, can be customized | |||
| Surface Treatment | Blasting and Painting , Epoxy Powder FBE, 2PE, 3PE Coating | |||
| Application | Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe | |||
Material & Chemical Composition (wt%)
| Item | C | Mn | Si | P | S |
| A106M Grade B | ≤0.30% | 0.29–1.06% | ≥0.10% | ≤0.035% | ≤0.035% |
Mechanical Properties
| Tensile Strength | Yield Strength | Elongation |
| ≥485 MPa (≥70,300 psi) | ≥415 MPa (≥60,200 psi) | ≥30% |

Features
High Temperature Performance
ASTM A106 Grade B seamless steel pipes are specifically designed for high-temperature service and maintain stable mechanical properties under elevated operating conditions.
strong tensile strength
The pipe provides reliable tensile strength and durability, allowing them to perform safely in high-pressure pipelines used for fluid and gas transmission.
Good Weldability and Fabrication
The pipe is easy to weld, cut, and process, making it suitable for installation and fabrication in various piping systems.
ASTM A53 vs ASTM A106 Grade B Comparison Table
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| Item | ASTM A53 Grade B | ASTM A106 Grade B |
| Type | Seamless, ERW, Furnace butt-welded | Seamless only |
| Chemical Composition | No min Si; higher P/S allowance | Min Si ≥0.10%; stricter P & S |
| Grade | A, B, C | A, B, C |
| Surface Treatment | Black, galvanized | Black (bare/coated optional) |
| Application | Water, gas, general piping | High-temperature & high-pressure piping |
Customization Services
To meet the specific requirements of different industrial projects, we provide flexible customization services for ASTM A106 Grade B seamless carbon steel pipes. Products can be manufactured according to customer specifications and project standards.
Custom Size and Wall Thickness
Outer diameter, wall thickness, and pipe length can be customized to meet different pipeline system requirements.
Special Length and Cutting
Pipes can be supplied in fixed lengths or cut to specific sizes according to project needs.
Surface Treatment Options
Various surface treatments are available, including black painting, anti-corrosion coating, and other protective finishes.
Standards and Material Requirements
Products can be manufactured according to different international standards and technical requirements.

FAQs
What is the difference between ASTM A106 and ASTM A53?
ASTM A106 is mainly used for high-temperature service, while ASTM A53 is typically used for general structural and low-pressure applications.
Can the pipe size be customized?
Yes, we can provide customized outer diameter, wall thickness, and length according to project requirements.
Do you provide inspection certificates?
Yes, Mill Test Certificates (MTC) and other inspection documents are available for each shipment.

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