Min. Order Reference FOB Price
1 Piece US$500.00-3,000.00 / Piece
Product Description
API Rotary Kelly Pipe Square Kelly and Hexagonal Kelly Drill Pipe Product Description Kelly is the drive part of whole drill string, it transmit the torsional energy from the rotary table to the bit in the bottom of the hole. Boban precision-machined Kelly is a heavy square or hexagonal steel bar ...