... diameter: 100~1000mm 3. hydraulic type 4. economic hydraulic elbow making machine,gorelocker,spiral duct machinery,is for making ... 1.2mm, max dia 1000mm.Hydraulic elbow making machine,gore locker,spiral tube former 3.1 Max. ... 0mm)3.3 Diameter range of elbow: 100-1000mm3.4 Max forming speed: 120m/min3.5 Motor: 380V ... duct machinery, gorelocker, hdyraulic elbow making machine. hydraulic elbow making ...