Isometric layout for a 10″ steam tracing line, originally drawn for a refinery project in Antwerp. Shows the pipe run across sleepers and through a culvert section (Culvert N 164). Included are details for 12″ and 10″ lines, specifically the 10-O-6999-A line with 3/4″ tracing. Features callouts for pipe shoes (H=200), drain points, and elevation markers like EL.8507 and TOS EL.8250. Notes are mostly in Dutch, covering field welds and generaal layout rules.Full project-ready isometric with sections and pipe run dimensions.