Heavy Weight drill collars

Hewy Weight Drill Pipe with spiral grooves

Diameter Thread type outside D of box upset and pin upset D1 of central inside upset D2 inside d inches mm inches mm inches mm inches mm 31/2 88,9 43/4 120,7 31/2 101,6 21/4 57,2 ...
13 March 2019
13 March 2019

Hewy Weight Drill Pipe with one central upset

Diameter Thread type outside D of box upset and pin upset D1 of central inside upset D2 inside d inches mm inches mm inches mm inches mm 31/2 88,9 43/4 120,7 31/2 101,6 21/4 57,2 ...
13 March 2019