WMA Schmidt & Bittner GmbH - Die ganze Welt der Widerstandsschweißtechnik: Catalogue, Welding machines, Welding guns, Micro technique, Controls, Electrodes, Welding techniques, Automation, <br>special equipments, Welding tools, Accessories, Cylinders, Ground hinge, unilateral air connection, double- or three-stage pressurized, unilateral air connection, duble- or three-stage pressurized,<br>with retract and working stroke