Price on request
Pricing is provided on request — use the quote form below.
Something wrong with this listing? Report it
1. Non-magnetic Drill Collars·2. lengths from 10 to 31 feet·3. outside diameter from 31/8" to 11"·4. Non-magnetic material
| Place of Origin | Henan China (Mainland) | 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 |
| Details | 1. Non-magnetic Drill Collars · 2. lengths from 10 to 31 feet · 3. outside diameter from 31/8" to 11" · 4. Non-magnetic material |
| Packaging Detail | Simple package suited sea shipment |
|---|---|
| Delivery Detail | 7-15 days after getting your prepayment of workable L/C. |
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
single hydraulic prop for mine
Oil Drilling Sucker Rod
BQ NQ HQ PHD HWT BTW NTW drill rod, multi-heat treat, 5ft and 10ft
big size hydraulic hammer using in water wells,oil,gas and construction drilling
API 7-1 drill collar
kelly bar For piling rig
