Machining material: TP1/2(M/M2) (Copper pipe) Pipe Diameter:4.76.0~?20,WT:0.3~1.0mm Number of pipe synchronously cutting: 2+2 pcs Min cutting length: 55 mm , 35-50mm(with out full) Max cutting length: 6000mm Max one feeding length: 1200 mm Efficiency: single circle, IF L=1000mm, t=10sec Length precision:=0.3mm Shrinking rate of pipe-end inner diameter:f