... Pipe Mill/Spiral Welded Pipe Machine/SSAW Pipe Making Machine External Diameter: Max. Φ4500mm Steel grade: Max. X80 Wall thickness: Max.25.4mm Internal ... unit (option), Main drive, Prebend unit, Forming machine, Internal welding unit, External welding unit, Online Ultrasonic tester, ... off unit. Finished equipments: End facing and bevelling machine, Hydrotester and conveyors Options: X-ray tester, ...