DNC 6431 Pneumatic Cylinder Aluminum Tube 32-125mm Air Cylinders Pipe Short Description: The same standard as FESTO DNC, accords to the standard ISO15552 (ISO 6431, VDMA24562). Size from 32mm upto 125mm. The material of the tube is 6063 T5.DNC Pneumatic Cylinder Barrel. The DNC series cylinder adopts international standards, and the advantages are very obvious: (1) Its design and structure are more modern, and compared with ordinary standard cylinders, it saves more installation space and makes the system structure more compact; Air Cylinder Tube. (2) Installation A wide range of accessories allows the cylinder to be installed in almost any position; Pneumatic Cylinder Tube. (3) There are many derivative models, which can provide suitable DNC cylinders for many applications.Air Cylinder Barre.