The Petroleum drilling tools mainly include Drill collars, Spiral drill collars, Non magnetic drill collars, Short drill collars, Drill tool stabilizers, Non magnetic 

drill tool stabilizers, Integral heavy weight drill pipes, etc.

All our Drill Collars and Non-magnetic Drill Collars are manufactured in accordance with API 7-1 Standard as required by the oil and gas industry.

Description:

The drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain ASTM A-370 mechanical properties. Full mechanical and chemical mill test certifications are supplied with all drill collars. These mill test certifications guarantee a hardness range of 285 to 341 BHN and an impact value of 40 ft.-lbs. at room temperature one inch below the surface.

1. Usage : One of the most important components of the drill string is to provide drilling bit ofpressure and the drill string rigid role.

2. Standard : API 7, API 7-1 and SY/T standards.   

3. Material : AISI 4145 H .

4. Types:Slick drill collars

5 Size : OD : 3 1/8”---11”, Length : 10’---31’

Shengli Ruite:

Certification:

Slick drill collars  in our factory:

SLRT, located in China's second largest oil field,

with the registered capital of RMB one hundred million,

as the first tier supplier network of CNPC and Sinopec in China, 

we are a API certificated manufacturer and global supplier of quality oilfield equipment 

to the oil and gas industry.