Two head welding machine for upvc window welding machine SHJ02-120*3500 1). The window machine is used for PVC door-window welding. 2). PLC controls the welding action program, high reliability. 3). Machine heads can work separately or jointly. 4). Free angle welding of right machine head. 5). Parameters can be set to meet various profiles' processing requirements. 6). High welding precision. 7). Imported PLC and other main electric components. 8). One of the heads can weld various angles, which can meet the customers need of welding an arc and other special-shaped windows. Good welding corner appearance.