API 5L – Line Pipe Chemical composition for PSL 1 pipe with t ≤ 25.0 mm (0.984 in)  max,  % Grade heat and product analyses a C b Mn b P S V Nb Ti Seamless pipe L175 or A25 0.21 0.6 0.030 0.030 – – – L175P or A25P 0.21 0.6 0.045-0.080 0.030 –…