Gold Member Since 2009
Audited Supplier
Chance Door International Co., Ltd.

Drill Collar, drilling equipment, drilling tool manufacturer / supplier in China, offering Drill Collar (CDDC), Hydraulic Station, Oil Christmas Tree for Wellhead and so on.

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Drill Collar (CDDC)

FOB Price: US $300 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $300/ Piece
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Production Capacity: 30000 Piece/Pieces per Month
Transport Package: bulk packing or by buyer
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: CDDC
  • Usage: Oil Mining
  • API: 7k
  • Origin: China
  • Certification: API
  • Material: High Manganese Steel
  • Trademark: Chance Door
  • HS Code: 84314310
Product Description
The Drill Collars are made of AISI 4145 H or 4145 H Modified alloy steel. Its bore are trepanned from one direction with no mismatch. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.
When order, pls specify:
- Type (slick or spiral grooved)
- Outside and inside diameters and overall length
- Connection size and type
- API Stress relief groove on pin and box ends
- Cast or pressed steel thread protectors
- Elevator recess or not
- Hard-banding or not
DATA SHEET FOR SLICK TYPE DRILL COLLAR
Size (in)Bore (in)ConnectionWeight (lb)Size (in)Bore (in)ConnectionConnection
30 ft31 ft30 ft31 ft
3 1/81 1/4NC23651.2673.26 3/42 1/44IF3132.83207.6
3 1/41 1/4NC23715739.272 13/1641/2IF3258.23366
3 1/21 1/22 3/81F787.68147 1/42 13/1641/2IF353543654.2
4 1/822 7/81F1031.810677 1/22 13/1641/2IF3830.23957.8
4 1/422 7/81F1119.81157.27 3/42 13/166 5/8 Reg4129.44268
4 1/222 7/81F1287133182 13/166 5/8 Reg4439.64587
4 3/42 1/4NC351383.814308 1/42 13/166 5/8 Reg4769.64928
52 1/431/21F1575.216288 1/22 13/166 5/8 Reg50935262.4
5 1/42 1/43 1/21F1784.21843.68 3/42 13/166 5/8 Reg5440.65621
5 1/22 1/431/21F19912057937 5/8 Reg5695.85885
5 3/42 1/44FH2219.82294.69 1/437 5/8 Reg6067.66270
62 1/4NC442450.82532.29 1/237 5/8 Reg6430.66644
6 1/42 1/441F2692.827839 3/437 5/8 Reg6815.67040
6 1/22 1/441F294830471038 5/8 Reg7207.27447

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Mr. Alex Lee
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