Is your complete source for Automatic Storage Tank Welding Machines that have been designed by people with years of onsite tank construction experience. We specialize in custom built to order automatic vertical & horizontal tank welding machines for Flat Bottom & LNG tanks / double wall tanks. We have over 10 standard Automatic Girth Welders (AGW) A.K.A. 3 O'clock Welder designs. Single pass (EGW) Electrogas Welder, VUP, AVW multi pass, Automatic Vert Welder. MPS trailer frame, Automatic Vert Buggy, Tank Jacking equipment, Sphere & Pressure Vessel welders, Automatic Pipe, Shop & Shipyard welders. This line of equipment is built with USA made Lincoln or Miller welding systems and German SEW drive motors.