External type flame heaterExternal type flame heater preheat the steel pipe from the outside steel pipe joint,Website:http://www.pipelineautoweld.com, to make the preparation for pipe welding.External type flame heater are used to preheating pipe from the outside. Air source are liquefied flammable gas, connected by flexible hose to the air intake. During operation, the flame heater are installed outside of the pipe, preheat the pipe by rotating the device through runner evenly.Technician Specification:ModelJRQ-14JRQ-16JRQ-20JRQ-24JRQ-26JRQ-28JRQ-32Applicable Pipe Diameter(OD)Φ355Φ406Φ508Φ610Φ660Φ711Φ813Nozzle Quantity6688101010ModelJRQ-36JRQ-40JRQ-48JRQ-58JRQ-66JRQ-80Applicable Pipe Diameter(OD)Φ914Φ1016Φ1219Φ1473Φ1676Φ2032Nozzle Quantity121216182024