The difference between API 5L Gr.B pipes and ASTM A106 Gr.B pipes
API 5L Gr.B pipes and ASTM A106 Gr.B pipes are both carbon steel pipes and used for oil and gas transportation. Both of them can be welded,but ASTM A106 Gr.B pipes are seamless pipes.
The difference between API 5L Gr.B pipes and ASTM A106 Gr.B pipes:
API 5L Gr.B pipes are derived from API Spec 5L specification for line pipe,and they are suitable for the transportation of gas,oil and water.API 5L are divided into two product levels:API 5L PSL1 and API 5L PSL2.PSL1 is a standard quality for line pipe where PSL2 contains additional chemical,mechanical properties,and testing requirements.Grades covered by API 5L specification are A25,A,B and “X” Grades X42,X46,X52,X56,X60,X65,X70, X80.The two digit number following the “X” indicates the Minimum Yield Strength (in 000’s psi) of pipe produced to this grade.API 5L Gr.B pipes can be two of API 5L product service level PSL1 and PSL2,that’s API 5L Gr.B PSL1 pipes and API 5L Gr.B PSL2 pipes.
ASTM A106(S/A 106) pipes are the standard specification for seamless carbon steel pipe for high-temperature and high-pressures service,such as power generation.ASTM A106 pipes contain three grades:ASTM A106 Grade A,ASTM A106 Grade B,ASTM A106 Grade C.ASTM A106 Gr.B seamless steel pipes are used in power plants,boilers, petrochemical plants,oil and gas refineries,and ships where the piping must transport fluids and gases that exhibit high pressures and temperatures.
Here are some tiny details about ASTM A106 Gr.B and API 5L Gr.B PSL 1 in chemical and physical property:
|C Max %||MN Max %||S Max %||Si Min %||Cr Max %||Cu Max %|
ASTM A106 Gr.B
API 5L Gr.B
|Standards||Strength of extension(MPA)||Yield strength(MPA)||Elongation %|
|ASTM A106 Gr.B||≥415||≥240||20|
|API 5L Gr.B||≥415||≥245||23|
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