Drilling Tool Stabilizer Non Magnetic Drill Collars , 40CrMnMo 9450mm Length Description: Drill collars are manufactured from 4145H modified steel.Drill collars are bored and drifted to API Spec 7-1 and fully ... Read More
API Spec Non Magnetic Spiral Drill Collar Oil Field Drilling Tools Description: Drill collars are manufactured from 4145H modified steel.Drill collars are bored and drifted to API Spec 7-1 and fully heated to ... Read More
Rotary Spiral Roller Drilling Stabilizer API 7-1 Standard For Heavy Weight Drill Pipe Description: 1. Our three rollers stabilizer adopts AISI 4145H MOD with the best quality as raw material and it mainly ... Read More