STEEL PROTECTOR DP 4-1/2 IF NC-50 BOX
Steel protector can be used for IF(NC-50) thread DP(drill pipe).Regular type thread REG indicates that the thread connects the thickened drill pipe inside, so it is commonly used for connecting drill bits with diameters smaller than the inner diameter of the drill pipe body.
Through hole type FH inner and outer thickened drill pipe connecting thread
Inner flat type IF outer thickened or inner thickened drill pipe diameter equal to or similar to the inner diameter.
