1.material: SUS304,SUS316L 2. material thickness: 0.4-0.6mm(6layers) 3. Length: no less than 3500mm 4. diameter 300- 600mm Main Technical Information: 1. Product material: SUS304,SUS316L 2. Product material thickness: 0.4mm-0.6mm(6layers) 3. Length: no less than 3500mm4. processing circle range: diameter 300mm-diameter 600mm Three roller rolling machine for inner tank of solar Water heater