Seamless Line Pipe:
|Specification||Grade||C Max||Mn Max||P Max||S Max|
|API 5L PSL 1"1"||A||0.22||0.90||0.030||0.030|
|API 5L PSL 2||B||0.24||1.20||0.025||0.015|
For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.05% above the specified maximum manganese content is permissible, up to a maximum of 1.50% for Grades X42 through X52, up to a maximum of 1.65% for Grades higher than X52 but less than X70, and up to 2.00% for Grades X70 and higher.
Columbium [niobium], vanadium, titanium, or combinations therof may be used by agreement between purchaser and manufacturer.
Columbium [niobium], vanadium, titanium, or combinations therof may be used at the discretion of the manufacturer.
The sum of the columbium [nobium], vanadium, and titanium contents shall not exceed 0.15%.
Other chemical compositions may be furnished by agreement between purchaser and manufacturer, providing that the limits of Footnote d and the tabular limits for phosphorus and sulfer are met.