TIANHE drill collar are manufactured strictly from API Spec.7 and SY5144 standard. In all size of integral spiral heavy weight drill pipe, 4145H and API standard Integral spiral heavy...

Integral Heavy Weight Drill Pipe with one central upset   01 Design & working procedure Conform to the requirment of  API Spec 02 Non-API standard type of drill collars are also availible as per client'request 03 Cold-rolled thread roots04low alloy steel as material...

Integral heavy weight drill pipe is manufactured as per API Spec7-1,AISI 4145H modified material are used All technical parameters and mechanical properties are complying with API Spec7-1 ...

Heavy Weight Drill Pipe with two central upsets   01 Design & working procedure Conform to the requirment of  API Spec 702 Non-API standard type of drill collars are also availible as per client'request 03 Cold-rolled thread roots04 low alloy steel as material...

TIANHE drill collar are manufactured strictly from API Spec.7 and SY5144 standard.  The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity. MS...

TIANHE drill collar are manufactured strictly from API Spec.7 andNS-1 standard.HSE .  The drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity....

Drill Collar with slip and elevator recesses with hard banding   01 Design & working procedure Conform to the requirment of  API Spec 7 02 Non-API standard type of drill collars are also available as per client'request 03 Cold-rolled thread roots 04 Thread...

Design & working procedure Conform to the requirment of API Spec 7 ;Non-API standard type of drill collars are also ava;Cold-rol   01 Design & working procedure Conform to the requirment of API Spec 7 02 Non-API standard type of drill collars are also available as per...

Drill Collar with spiral grooves   01 Design & working procedure Conform to the requirment of API Spec 7 02 Non-API standard type of drill collars are also available as per client'request 03 Cold-rolled thread roots 04 Thread connections  are performed with stress...

Design & working procedure Conform to the requirment of API Spec 7;Non-API standard type of drill collars are also available. 01 Design & working procedure Conform to the requirment of  API Spec 702 Non-API standard type of drill collars are also available as per...