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Home > Manufacturing & Processing Machinery > Mining Machinery > Mining Machinery Parts > Square Kelly Drill Pipe

Square Kelly Drill Pipe

Name: Square Kelly Drill Pipe
Brand: GM, AISI4145H
SKU: 111040887

US$ 1,000 - 10,000 MOQ: 1 Piece

Key Specifications

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Place of Origin:

Shandong, China

Brand Name:

GM, AISI4145H

Model Number:

Square Kelly drill pipe, 2-1/2" to 5-1/4",3"to 6"

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Goldenman Petroleum Equipment Co., Limited

Payment & Shipping

Payment Methods:

Port of Shipment:

Main port of China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Place of Origin Shandong, China

Brand Name GM, AISI4145H

Model Number Square Kelly drill pipe, 2-1/2" to 5-1/4",3"to 6"

Type Drill Pipe

Machine Type Drilling Tool

Certification API

Material Carbon Steel

Processing Type Other

Use Well Drilling

Specifications

1, Square Kelly drill pipe is made AISI 4145H alloy steel
2,It is formed by hot forged and fully heat- treated
3,professional

Square Kelly drill pipe

Product description: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.

The Main Technical Specification of Kelly ( Square& Hexagonal )

Norminal Size (in)	Length(ft)	Top Upset Joint		Bottom Upset Joint		Bore D	Drive Section
Norminal Size (in)	Length(ft)	API BOX Thread Left Hand	Du	Right Hand Connections	DL	Bore D	Across Corners	Across Flates
3-1/2	40	6 5/8REG	7 3/4	NC38(3 1/2IF)	4 3/4	2 1/4	4.437	3 1/2
4-1/4	40	6 5/8REG	7 3/4	NC46 (41F) NC50(4 1/2IF)	6~6 3/8 6 1/8~6 3/8	2 13/16	5.500	4 1/4
5-1/4	40	6 5/8REG	7 3/4	NC50 5 1/2FH	7	3 1/4	6.750	5 1/4
6	40	6 5/8REG	7 3/4	NC50	7 3/4	3 1/2	7.625	6

We are responsible for customers, strictly implement the standard specifications, and provide high-quality products and service. Sincerely hope to establish good trade relationship with all friends at home and abroad.