... pipe mills as follows:Domestic machines: 20, 32, 50, 76, 114, and 165 tube welding machinesTaiwanese machines: 40, 50, 65, 70 ... , and 114 tube welding machinesSpecificationsFor production of steel/galvanized tube ... making machine/welded pipe mill/pipe forming machine/pipe welding machine/ERW Tube Mill/Steel Pipe Making Machine/ ...