city district heating pipeline system reparation and reconstruction on the street excavation site with welded pipes

barrier bond burns bury central chain city completion connect connection construction craft craftsman deep detail dirt distribution district ditch electro energy equipment excavating excellence extracting gas ground heating hole home hot industrial industry infrastructure iron joint line long maintenance material metal new parallel pipe pipeline pipework plumbing positions power reconstruction repair reparation replace safety seam season security sheets solder splice steel street supply surface system technology texture together tool town trench tube underground urban water weld welded welder welding work