Description:Can make SWG with or without inner & outer ring, needn’t complex molds. Work pressure is changed with dia. Size controlled by air pump. Need additional welder. 1. Power:380AV, 50HZ, 1.1 KW; 2. L×W×H=0.8×0.8×1.6m; 3. N.W.: appr.400kgs 4. Line Speed: Transducer control 5. Work range: ID 10~350mm Thick. 4.5mm, 3.2mm Other thick. 2.5 & 7.5mm on request.