... & anti-corrosion layer at the same time, thus forms insulating& anti-corrosion layer of the pepeline, which is pioneer ... high production efficiency, low cost, energy saving automatic deviation adjusting machine, high exactness, steady working, effective correction the whole line ... moulds Steel Tube Size(mm)Tube Wall Thickness(mm)Insulating Layer(mm)452.029572.029762.230892.2301082.4301332.4301592. ...