Uses: steel pipes used in pipeline transportation system in the petroleum and natural gas industries. Grades:PSL1:L245 or B- L485 or X70 PSL2:L245N or BN- L415N or X60N, L245Q or BQ - L555Q or X80Q, L245M or BM - L555M or X80M. Process of manufacture: Seamless/ Welded Dimension: OD: 33.4 - 1422M