... inside diameter 300-2000mm of concrete and reinforced concrete pipe, pipe interface is divided into level I, level I ... doser(if necessary), concrete mixer, concrete feeder, pipe making machine, pipe moulds, eot crane,boiler system(if necessary), ... and automatic welding machine),etc.pipe diameter------1000-3000mm;pipe length-------1000-5000mm.pipe joints------flat, rabbet,socket.Pipe making machine type ...