ASTM A106 Grade B Pipe (A106M – 18) is a Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service. ASTM A106 pipe is constantly delivered by the seamless method and can be bent, coiled and flanged. Carbon steel astm a106 pipe, ASTM A106 Grade B Pipe sizes, less than 2″ is it normally delivered as a cold drawn product. 2″ and up are usually hot finished. SA106 pipe is expected for use in high temperature applications. General characteristics steel seamless pipe grade A106 / A106M.- is steel for high temperature service, it is a steel that enables bending, welding and flanged among other tasks.


A list of available dimensions for ASTM A106 Grade B Seamless Steel Tube are as follows:

NPS ¼” to 30” diameter

Schedules 10 through 160, STD, XH and XXH

Schedules 20 through XXH

Wall Thickness beyond XXH, including:
- Up to 4” wall in 20” through 24” OD
- Up to 3” wall in 10” through 18” OD
- Up to 2” wall in 4” through 8” OD

ASTM A106 Grade B Seamless Steel Tube Chemical Requirements

Grade A Grade B Grade C
Carbon max. % 0.25 0.30 0.35
Manganese % 0.27 to 0.93 0.29 to 1.06 0.29 to 1.06
Phosporous, max. % 0.025 0.025 0.025
Sulfur, max. % 0.025 0.025 0.025
Silicon, min. % 0.10 0.10 0.10


ASTM A106 Grade B Seamless Steel Tube Testing’s:

Mechanical Testing Such as tensile of area, Resistance Test, Chemical Analysis, Positive Material classification, Flattering Test, Micro, and Macro Test, Pitting conflict Test, Flaring Test, Intergranular decay Test is performed.


Commercial Invoice which includes HS Code, Packing List counting net weight and gross weight, no. of boxes, Marks and Numbers, Certificate of source legalized/attested by Chamber of Commerce or group, Fumigation Certificates, Raw Material Test Reports, Material Traceability Records, Quality Assurance Plan, Heat Treatment Charts, assurance Letter, NABL approved Laboratory Test Reports.