4 sch 40 pipe id July 8, 2019 16 32 64 128 3 4 sch 40 pipe id 4 inch sch 40 pipe id 4 sch 40 steel pipe id 1 1 4 sch 40 pipe id Id of 4 sch 40 pvc pipe 4 pipe 4 sch 40 pipe 4 sch 40 pipe dimensions 4 sch 40