3 inch schedule 40 pipe thickness July 8, 2019 16 32 64 128 3 inch schedule 40 pipe thickness (in mm) 3 inch schedule 40 pipe wall thickness 3 inch schedule 40 steel pipe wall thickness 3 schedule 40 pipe id 3 inch schedule 40 pipe 3 schedule 40 pipe dimensions Pipe 3 inch sch 40 3 pipe sch 40