fabrication isometric for 12″ NB vent line spools 5 & 6. Includes the full layout for the Leg 4 section on the Valaris DS-4, plus NDT specs (100% CVI & MPI) and galvanized finosh reqs. It’s got the cutback angles, continuation notes etc
Valaris DS-4 MGS 12″ Vent Line Piping Fabrication Isometric
