The drill collar is used between the drill pipe and the bit in the drill stem. It is used to put weight on the bit so that the bit can drill. the drill collars are made of AISI 4145H or 4145H modified alloy steel. Its bores are trepanned from one di...
Heavy Weigth Drill Pipe-
Heavy Weigth Drill Pipe
Heavy Weight Drill Pipe (HWDP) was developed to provide a gradual transition from the drill collars to the drill pipe. This HWDP helps to prevent stress concentration at the top of the drill collar.It also allow drilling at higher rpms, reducing torq...
Kellys are made from 4145H modified alloy steel in accordance with API Spec.7-1 latest edition, which are quenched and tempered along full length. A hardness range of 285 to 341 BHN and a minimum impact value of 54 Joules as per ASTM A 370 Charpy-V, ...
In addition to standard API 5DP specifications, we also manufactures drill pipe in accordance with the following industry specifications.
The requirements for PSL1 are the basis of API SPEC. 5CT (9th Edition). The requirements that define different levels of standard technical requirements for PSL2 and PSL3, for all Grades except H-40, L-80 9Cr and C110, are contained in Annex H of API...
All of above products are produced and processed according standard,with material of steel grade include J55,K55,N80,L80,P110 and so on.Connection have EUE,NUE,NPT,REG 8V and so on.by numerically controlled lathe and import molding cutter,the process...