IF Connection Protector Pin & Box 3 1/2in drill pipe
IF Connection protector used for Drill pipe thread protection which this kind of joints are divided into four types according to the thread type: inner flat (IF), through hole (FH), and regular (REG); Number (NC).
The drill pipe joint is an integral part of the drill pipe, which is divided into a male joint and a female joint, and is connected at both ends of the drill pipe body. In order to enhance the connection strength of the joint, it is necessary to increase the wall thickness of the pipe body at the joint. According to the thickening methods, it can be divided into three forms: internal thickening, external thickening, and internal and external thickening.
Internal flat joint (IF), mainly used for EU and IEU drill pipes. The inner diameter of the thickened drill pipe=joint inner diameter=pipe body inner diameter. Low strength, buckle type with small end and large end. The inner diameter of the female buckle is 211 (NC26 2 3/8 ").
