What is API 5L GRB pipeline pipe?
API 5L GRB line pipe is a type of steel pipe used in the oil and gas industry with the following characteristics:
Standard compliance: This line pipe follows the API Spec 5L standard set by the American Petroleum Institute (API).
material & chemical composition:
According to PSL-1 grade, the L245/B steel grade of the pipeline pipe has the chemical composition requirements of C≤0.28%, Mn≤1.20%, P≤0.030%, S≤0.030%, Nb+V+Ti≤0.15%, Cu≤0.50%, Ni≤0.50%, Cr≤0.50%, Mo≤0.15%.
PSL-2 grade is more stringent, such as L245N/BN steel grade, C ≤ 0.24%, Si ≤ 0.40%, Mn ≤ 1.20%, P ≤ 0.025%, S ≤ 0.015%, Nb + V + Ti ≤ 0.06%, Ti ≤ 0.04%, Cu ≤ 0.50%, Ni ≤ 0.30%, Cr ≤ 0.30%, Mo ≤ 0.15%, B ≤0.004%.
Mechanical properties:
Yield strength of PSL-1 grade ≥245MPa, tensile strength ≥425MPa.
The yield strength of PSL-2 grade ranges from 245MPa to 450MPa, the tensile strength from 415MPa to 655MPa, and the yield to strength ratio ≤ 0.93.
Main specification models:
Specific specifications include L245/B, L245N/BN, L245M/BM, etc. These different steel grades are adapted to different industrial needs.
