... thick: 1.2mm 2. diameter: 100~1000mm 3. hydraulic type 4. economic hydraulic elbow making machine,gorelocker,spiral duct machinery,is for making duct ... elbows, max. thickness 1.2mm, max dia 1000mm.Hydraulic elbow making machine,gore locker,spiral tube former 3.1 Max. thickness of ... .thickness 1.0mm)3.3 Diameter range of elbow: 100-1000mm3.4 Max forming speed: 120m/min3.5 Motor: 380V, 5KW, 3 ...