Home > products > Oil Drilling Equipment >
Rotary Kelly Flats Milled To API Specs For Consistent Drill String Performance

Rotary Kelly Flats Milled To API Specs For Consistent Drill String Performance

rotary kelly flats

Place of Origin:

China

Brand Name:

xi'an rig

Certification:

API 5DP

Model Number:

3

Chat Now
Request A Quote
Product Details
Type:
Drilling Machinery
Percussion Oil Flux:
30-35I/min
Maintenanceinterval:
Every 500 Operational Hours
Model:
BH26
Powersource:
Diesel/Electric
Working Temperature:
Up To 120 ℃
Diameter:
1.5-24inch
Main Website:
Www.kosunservices.com
Impact Energy:
55-60J
Hole Diameter:
32-50mm
Controlsystem:
Automated/Manual
Application:
Oil And Gas Industry
Rotaryspeed:
50-120 RPM
Torque Force:
50-55Nm
Power:
11kw
Highlight:

rotary kelly flats

Payment & Shipping Terms
Minimum Order Quantity
1
Packaging Details
Wooden case
Delivery Time
1 Months
Payment Terms
L/C,T/T
Product Description

Oil Drilling Equipment with precision milled Rotary Kelly flats meeting API specifications for and consistent drill string performance


Auxiliary System of Oil Drilling Equipment


The auxiliary system provides all-round supporting safeguards for drilling operations, ensuring stable operation of equipment and safe work for personnel, covering supporting needs across the entire scope of operations.

It includes lighting system, elevated working platforms, monkey board, climbing protection devices, hydraulic and lubrication system, cooling system, fire-fighting system, ventilation and dust-removal system, living/utility power supply system, and auxiliary lifting tools for equipment, among others. Among these, the lubrication system continuously supplies oil to all transmission and rotating equipment to reduce wear; the cooling system dissipates heat for diesel generator sets, hydraulic systems, and electrical equipment to avoid high-temperature failures; and the fire-fighting system is adapted to the high-hazard oil and gas operation scenarios to guard against fire and explosion risks.


Rotary Kelly Flats Milled To API Specs For Consistent Drill String Performance

When ordering please specify:of Oil Drilling Equipment

  • Kelly type (square or hexagonal);
  • nominal size and overall length;
  • Upper and lower connections.
Nom Size (in) Standard O.D.(in) Bottom Connection‑Hex. O.D.(in) I.D.(in) Drive Section(in)

Standard O.D.(in) Optional O.D.(in) Square O.D.(in) Hex. O.D.(in) Square Hex. A B
2 1/2 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC26 3 3/8

1 1/4 3 1/4
3 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC31 4 1/8 NC26 3 3/8 1 3/4 1 1/4 3 3/8 3 3/8
3 1/2 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC38 4 3/4 NC31 4 1/8 2 1/4 1 3/4 4 7/16 3 15/16
4 1/4 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC46 6 1/4 NC38 4 3/4 2 13/16 2 1/4 5 1/2 4 25/32
4 1/4 6 5/8 REG LH 7 3/4 4 1/2 REG LH 5 3/4 NC50 6 3/8 NC38 4 3/4 2 13/16 2 1/4 5 1/2 4 25/32
5 1/4 6 5/8 REG LH 7 3/4
5 1/2 FH 7 NC46 6 1/4 3 1/4 3 6 3/4 5 29/32
5 1/4 6 5/8 REG LH 7 3/4
NC56 7 NC50 6 3/8 3 1/4 3 1/4 6 3/4 5 29/32
6 6 5/8 REG LH 7 3/4

5 1/2 FH 7
3 1/2
6 13/16
6 6 5/8 REG LH 7 3/4

NC56 7
3 1/2
6 13/16

Send your inquiry directly to us

Privacy Policy China Good Quality Oil Drilling Equipment Supplier. Copyright © 2026 Xi'an Rig Oilfield Equipment Co., Ltd. . All Rights Reserved.