Contracting company in south Texas used helicopters for stringing 2 ton joints of 30 in. pipe when mud hindered ground travel; each joint of 30 in. pipe was 40 ft long and weighed 3950 lb; for entire job, helicopter averaged stringing time of 22 joints/hr of flying time.
It flies through air with greatest of ease
Pipe Line Industry
Pipe Line Industry ; 14 , n 1
1961
3 pages
Aufsatz (Zeitschrift)
Englisch
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