The invention discloses a construction method of a steel-jacketed steel steam direct burial pipeline. The method comprises the following steps of construction preparation, pipeline transportation andhoisting in place, working
pipe butt-joint installation, working
pipe butt-joint
welding, working
pipe welded junction inspection, working pipe
hydraulic pressure test, outer protection pipe and working pipe temporary fixing and dismounting, working pipe welded junction
corrosion prevention and heat preservation, outer protection pipe joint
welding, outer protection pipe joint
welding inspection,outer protection pipe joint
corrosion prevention, pipe
ditch backfilling, and working pipe purge. According to the method, the whole set of mature and systematic construction method is continuously improved in the actual installation and construction process, the construction method is detailed in content, reasonable in standard requirement preparation, simple in process and reasonable in procedure, compared with conventional installation, the construction period is shortened, equipment
machine-team use is saved, consumed materials are saved, the working efficiency is improved, material lossesare correspondingly reduced, the construction cost is reduced, civilized construction is facilitated, improvement of
environmental protection measures is facilitated, labor, equipment and material cost are saved, and good
economic benefits,
social benefits and environmental benefits are generated.