Oilfield Kelly Drilling Rotary Hoses - API 7K Approved
2020-7-18u2002·u2002Products Range. Kelly hose or Kelly line connecting the standpipe to the swivel, is made of special NBR tube, two layers of spiral steel cables and abrasion-resistant cover. Rotary drilling hose is used to convey drilling liquids from the top of mud standpipe to the rotary swivel. Operating pressure up to 4000psi.
Get Price