Specifications
Brand Name :
TR Solids Control
Model Number :
TRFZG
Certification :
API 7-1, ISO 9001
Place of Origin :
Xi'an China
MOQ :
1 pc
Price :
Negotiable
Payment Terms :
L/C, D/A, D/P, T/T, Western Union
Supply Ability :
100000 pcs Per Month
Delivery Time :
20 days
Packaging Details :
Pallet or wooden case
Size :
2-1/2" ~ 6"
Color :
Blue, Black
Material :
Alloy steel
Application :
Well Drilling
Description

API Standard Square Kelly / Hexagonal Kelly in Oilfield

Product Overview

Kelly is main driver of the whole drill string. It transmits torsional energy from the rotary table through the drill string to the bit at the bottom of the hole, and is a long square or hexagonal, precision machined heavy steel bar that is supported by the swivel through the rotary table and is connected to the first joint of drill pipe in the drill string.

Kelly is the drive part of whole drill stem, it has two types, square kelly and hexagonal kelly and all of them are manufactured comfort to API Spec7-1 and SY/T6509-2000 criterion.

Our Square& Hexagonal kelly are made from AISI 4145H modified alloy bars that are quenched and tempered full length. After such heat treatment, its brinell hardness can reach 285-341. Kelly's end, drive cross-section and joint are all processed and tested comform to API criterion.

Advantages of Square & Hexagonal Kelly

  1. Shipped in a protective steel -cased scabbard.
  2. Ends and drive section,IDs and connections machined and inspected to API specification.
  3. Ultrasonic inspection is performed on all section.
  4. Manufactured from AISI4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40ft-Ibs.

Technical Data. of Our Square & Hexagonal Kelly

Kelly size 63.5 76.2 88.9 108 108 133.4 133.4
2 1/2 3 3 1/2 4 1/4 4 1/4 5 1/4 5 1/4
Lengthdrive Section LD Standard 11280 11280 11280 11280 11280 11280 11280
LD optional 15540 15540 15540 15540
Lengthoverall L Standard 12190 12190 12190 12190 12190 12190 12190
L optional 16460 16460 16460 16460
Length Drive Section DFL Across flate 63.5 76.2 88.9 108 108 133.4 133.4
DC Across cornere 83.3 100 115.1 141.3 141.3 175.4 175.4
DCC Across flate 82.55 98.43 122.7 139.7 139.7 171.45 171.45
RC Radlue 7.9 9.5 12.7 12.7 12.7 15.9 15.9
RCC Radlue 41.3 49.2 56.4 69.9 69.9 85.7 85.7
Wall thickness eccentric bore 11.43 11.43 11.43 12.07 12.07 15.88 15.88
Upper box connection Thread size and style LF Standard 6 5/8 REG 6 5/8 REG 6 5/8 REG 6 5/8 REG 6 5/8 REG 6 5/8 REG 6 5/8 REG
Optional 4 1/2 REG 4 1/2 REG 4 1/2 REG 4 1/2 REG 4 1/2 REG
OD Du Standard 196.9 196.9 196.9 196.9 196.9 196.9 196.9
Du Optional 146.1 146.1 146.1 146.1 146.1
Bevel diameter Lu 406.4 406.4 406.4 406.4 406.4 406.4 406.4
DF Standard 186.1 186.1 186.1 186.1 186.1 186.1 186.1
DF Optional 134.5 134.5 134.5 134.5 134.5
Lower pin connection Label NC26 NC31 NC38 NC46 NC50 5 1/2 FH NC56
Outsize diameter 85.7 104.8 120.7 158.8 161.9 177.8 177.8
LL 508 508 508 508 508 508 508
DF Bevel diameter 82.9 100.4 116.3 145.3 154 170.7 171.1
Inside diameter 31.8 44.5 57.2 71.4 71.4 82.6 82.6

Oilfield API 5 1/4

When ordering please specify below:

  • Nominal size and overall length.
  • Kelly type (Square or hexagonal).
  • Upper and lower connection.

Xi'an TianRui Petroleum Machinery Equipment Company Limited is a professional manufacturer of solid control equipment and other petroleum equipment in China. We are the first-class supplier of resources market of SINOPEC and CNPC. Our products include solid control equipment, cement tools, PDC drilling bits, Wellheading tools, Mud pumps and their acceossries.

They are exported to Russia, America, Middle East, South America, Southeast Asia, Central Asia , African, Australia,Europe etc. Our company is willing to cooperate and make common progress with friends at home and abroad with first-class products, first-class service and reasonable prices

Competitive Advantages


1. We offer high quality products at competitive price.
2. Shortest delivery time.
3. Flexible payment terms.
4. Timely after-sale service.
5. Most of our equipment can be replaceable with international brands.
6. Our products have been exported to Argentina, Egypt, US, Australia, Romania, Pakistan, Dubai, Abu Dhabi, Iran, India, Indonesia, Vietnam, Malaysia and many other countries.

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Oilfield API 5 1/4" Square Kelly Drill Spare Parts

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Brand Name :
TR Solids Control
Model Number :
TRFZG
Certification :
API 7-1, ISO 9001
Place of Origin :
Xi'an China
MOQ :
1 pc
Price :
Negotiable
Contact Supplier
Oilfield API 5 1/4 Square Kelly Drill Spare Parts
Oilfield API 5 1/4 Square Kelly Drill Spare Parts
Oilfield API 5 1/4 Square Kelly Drill Spare Parts

Xi'an TianRui Petroleum Machinery Equipment Co., Ltd.

Verified Supplier
8 Years
Since 2010
Business Type :
Manufacturer
Total Annual :
40 Million-50 Million
Employee Number :
350~450
Certification Level :
Verified Supplier
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