... 5%.4.Equipped with a fixed size trench roller R series, tube geometry after compression high accuracy and ovality at ≤ 0 ... heating pipe manufacturing industry.main technical parameters:1, Power source: Three-phase AC 380V, 50Hz2,Power input: 08: 6kW 10: 7.5kW ... ,Two roller round center distance adjustment quantity: ±1.05, Pipe speed: 18m/min6, Pipe scope: φ5~147, External dimensions: 08: ...