Precision Transmission Pipe

Round‑Outer Hex‑Inner Steel Pipe: Ideal for Torque Transmission

Round outer and hexagonal inner steel pipe is a high‑precision special‑shaped profile tube with a circular outer surface and a hexagonal inner bore. It combines the excellent bending resistance of round tubes and the high torque‑transmission stability of hexagonal structures, making it widely used in precision machinery, automotive, aerospace, automation, and other industrial fields.