Hexagonal Rotary Kelly Drill String Pipe Downhole Drilling Tool Equipment AISI 4145h

• Standard: RoHS, AISI, API
• Usage: Oil Mining, Well Drilling, Ore Mining
• Material: AISI 4145h
• Transport Package: Wood Case or Stantdard Sea Packing
• Specification: O. D. 79-279MM
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000000PCS

Product Description

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. TIANHE Kelly 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.
Straightness of the kelly is very crucial in the manufacturing process, thus straightness inspections are carried out before, during and after each machining operation. The flats are precision-milled to API specifications. All milling processes are performed on specially designed rigid Kelly mills to ensure tight tolerances and high quality drive sections. Each TIANHE Kelly is furnished with a pressed steel thread protectors.


Features and Benefits

• Manufactured from AISI 4145H-modified, fully heat-treated alloy steel with a Brinell hardness range of 285-341BHN and a minimum average Charpy impact value of 40 ft-lbs;
• Ends and drive sections, IDs and connections machined and inspected to API specifications;
• Ultrasonic inspection is performed on all sections;
• Shipped in a protective steel-cased scabbard;

When ordering please specify:

• Kelly type (square or hexagonal);
• Nominal size and overall length;
• Upper and lower connections.
•  
• Specifications - Rotary Kelly

• Nom Size (in)	Square kelly Product Code	Hexagonal Kelly Product Code	Top Connection(LH)		Bottom Connection		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	Z03-130000		6 5/8 REG LH    7 3/4	4 1/2 REG LH                  5 3/4	NC26             85.7		1 1/4		3 1/4
  3	Z03-130100	Z04-130000	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	Z03-130200	Z04-130100	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	4
  4 1/4	Z03-130300	Z04-130200	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 4/5
  	Z03-130400	Z04-130300	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 4/5
  5 1/4	Z03-130500	Z04-130400	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
  	Z03-130600	Z04-130500	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		Z04-130600	6 5/8 REG LH    7 3/4			5 1/2 FH              7		3 1/2		6 13/16
  		Z04-130700	6 5/8 REG LH    7 3/4			NC56              7		3 1/2		6 13/16

 

Detailed Photos

Certifications

Packaging & Shipping

 

Company Profile

Our Advantages

Tianhe principle is to offer high quality products at competitive price to benefit our customers and the industry in the long run.
We are the Leading manufacturer in China since 1973 for drilling /fishing /milling equipment for oil and gas.
We have established a complete quality control system, all products& equipments manufactured as per international standard and API standard.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time & Flexible payment terms.
3. Full range of drilling /fishing /milling equipment for oil and gas.
4. Timely after-sale service.
5. Imported International brands Machines such as Japan Mazak machining center, Austria WFL machining center etc
6. Complete quality control system, offices and testing equipment.
 

 

FAQ

Dear  customer,

Thanks for your time of visiting us on made in china, if you have any further questions and needs, please kindly inform us by inquiry online or contact us by below information.

We look forward to your kind reply, thanks very much.

Ms. Dongyan
Sales Manager

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd.