Internal Type Flame HeaterInternal type flame heater will preheat the steel pipe from inside,Website:http://www.pipelineautoweld.com, to make the preparation for pipe welding, which normally used in pipe end preheating prior welding.Internal type flame heater is suitable for preheating the pipe from inside. Air source is liquefied flammable gas, connected by flexible hose to the device. Operation method, the Internal type flame heater is placed inside of the pipe, adjust the jaws clamping on the pipe end, and preheating from inside.   Easy to install and operateTechnical 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