Non-magnetic Drill Collars

1. Non-magnetic Drill Collars, 2. lengths from 10 to 31 feet, 3. outside diameter from 31/8" to 11", 4. Non-magnetic material - details see: https://www.machineto.com/non-magnetic-drill-collars-10317647

Place of Origin:Henan China (Mainland)	Brand Name:ZZZX	Model Number:API Spec	Type:Drill Collar
Machine Type:Drilling Tool	Certification:API	Material:allloy steel,4145H alloy steel	Processing Type:Forging
Use:Well Drilling

contact supplier for Non-magnetic Drill Collars

Non-magnetic Drill collars are made from Non-magnetic materials with high- strengh (YDWC20-18) or low- strength (YDWC20-14) by combining a proprietary chemical analysis and a rotary hammer forging process with low magnetic permeability excellent machine ability.

Each drill collar is fully inspected by internal inspection dept. All data obtained are recorded on the inspection certificate furnished with each drill collar. API monogram, serial number, OD, ID, type and size of connections are stamped on recessed mill flats.

Drill collars are available in lengths from 10 to 31 feet and outside diameter from 3¹/₈" to 11" .

Magnetic Properties of Non-magnetic Drill Collar:
When MPS=1 ×10⁵/₄πA/m:
Relative magnetic permeability μ r ≤ 1.004
Magnetic Field Gradient B ≤ 0.04 μT