Oilfield Drilling Tools Kelly (Square AND Hexagonal)

• Customization: Available
• After-sales Service: Timely After-Sale Assistance
• Warranty: 12 Month
• Model NO.: According to the custom
• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• Transport Package: Standard Export Packing
• Specification: According to the custom
• Trademark: East heavy
• Origin: Henan China
• HS Code: 84314300

Product Description

Product Description

Square Kelly

Square Kelly is made of AISI 4145H alloy steel. ac. to API Spec.7 and SY/T6509. It is formed by hot forged and fully heat-treated by intermediate frequency indction heat treatment or 20m horizontal optical resistance furnace to gain high physical properties in length. All threads are phosphated, copperized or cold worked.

 

Product Parameters

 

Stand size for Hexagonal kelly
 

Kelly size		Length drivesection		Length overall		Length drivesection
		LD Standard	LD Optional	L Standard	L Optional	DFL Across flate	DC Across cornere	DCC Across cornere	RC Radlue	RCC Radlue	t Wall Thickness Eccentric bore
76.2	3	11280		12190		76.2	85.7	85.73	6.4	42.9	12.1
88.9	3 1/2	11280		12190		88.9	100.8	100.0	6.4	50.0	13.3
108.0	4 1/4	11280	15540	12190	16460	108.0	122.2	121.44	9.9	60.7	15.9
133.4	5 1/4	11280	15540	12190	16460	133.4	151.6	149.86	9.9	75.0	15.9
133.4	5 1/4	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88
152.4	6	11280	15540	12190	16460	152.4	173.0	173.02	9.5	86.5	15.9
152.4	6	11280	15540	12190	16460	152.4	173.0	173.02	9.5	86.5	15.9

 

Upper box connection							Lower pin connection				Inside diameter
Thread specification and type		OD		BevelDiameter			Label	DLR Out diameter	LL	DF Bevel Diameter
Standard	Optional	DU Standard	DU Optional	LU	DF Standard	DF Optional
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC26	85.7	508	82.9	31.8
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC31	104.8	508	100.4	44.5
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC38	120.7	508	116.3	57.2
65/8REG		196.9		406.4	186.1		NC46	158.8	508	145.3	71.4
65/8REG		196.9		406.4	186.1		NC50	161.9	508	154.0	71.4
65/8REG		196.9		406.4	186.1		51/2FH	177.8	508	170.7	82.6
65/8REG		196.9		406.4	186.1		NC56	177.8	508	171.1	82.6

 

Square kelly drive section
 

Kelly size		Length drivesection		Length overall		Length drivesection
		LD Standard	LD Optional	L Standard	L Optional	DFL Across flate	DC Across cornere	DCC Across cornere	RC Radlue	RCC Radlue	t Wall Thickness Eccentric bore
63.5	2 1/2	11280		12190		63.5	88.3	82.55	7.9	41.3	11.43
76.2	3	11280		12190		76.2	100.0	98.43	9.5	49.2	11.43
88.9	3 1/2	11280		12190		88.9	115.1	112.7	12.7	56.4	11.43
108.0	4 1/4	11280	15540	12190	16460	108.0	141.3	139.7	12.7	69.9	12.07
108.0	4 1/4	11280	15540	12190	16460	108.0	141.3	139.7	12.7	69.9	12.07
133.4	5 1/4	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88
133.4	5 1/4	11280	15540	12190	16460	133.4	175.4	171.45	15.9	85.7	15.88

 

Upper box connection							Lower pin connection				Inside diameter
Thread specification and type		OD		BevelDiameter			Label	DLR Out diameter	LL	DF Bevel Diameter
Standard	Optional	DU Standard	DU Optional	LU	DF Standard	DF Optional
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC26	85.7	508	82.9	31.8
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC31	104.8	508	100.4	44.5
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC38	120.7	508	116.3	57.2
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC46	158.8	508	145.3	71.4
65/8REG	41/2REG	196.9	146.1	406.4	186.1	134.5	NC50	161.9	508	154.0	71.4
65/8REG		196.9		406.4	186.1		51/2FH	177.8	508	170.7	82.6
65/8REG		196.9		406.4	186.1		NC56	177.8	508	171.1	82.6

 

Company Profile

 

Jiyuan City East Heavy Industry Co., Ltd.is a high-tech enterprise specializing in manufacturing drilling tools of "DongFang " brand for petroleum and geological exploration. It lies at the foot of majestic Mount Wangwu in Jiyuan City, Henan Province, beside the key water project of Xiaolangdi Dam on the Yellow River. It covers more than thirty thousand square meters, owning the properties of RMB one hundred million Yuan. Good cooperative relation has been established between our company and some authoritative institutions, such as China University of Petroleum, Taiyuan University of Technology and Tubular Goods Research Center of CNPC, which provide technical force to develop new products.



The company owns a full range of drilling tool product lines, main equipment' s of deep-hole drilling and boring machine, ordinary lathe, the heat treatment product lines of intermediate frequency, spiral milling machine tools, CNC pipe threading lathes, the imprint of milling machines and so on. Our company has established a special testing center equipped with advanced delicate testing equipment from home and abroad. We control the whole process of manufacturing,strictly implementing the standard of SY/T5144,SY/T5146,SY/T5051,SY/T6509,API7-1,API7-2,ensuring the indices of our products meet the standard in China and the standard of API(American Petroleum Institution).We have got ISO9001Certification and the authorization of using the symbol of API. The main products are non-magnetic drill collar, non-magnetic pressure bearing drill pipe, Non magnetic short drill collar,Directional joint,ordinary drill collar, integral weighted drill pipe, square drill pipe, hexagonal drill pipe, spiral drill collar, centralizer, adapter and some long shaft products.



With "FAITH BASED, INNOVATIVE BUSINESS, KEEP IMPROVING,PURSUIT OF EXCELLENCE "as our consistent policy, we wound like to develop cooperation and technological exchanges with friends all over the world with our honest credit, financial strength and technological superiority, and work together for manufacturing and development of drilling equipment's in order to create a better future.


 

Certifications

 

 

FAQ

 

Q: What products do we manufacture? „
A: The main products are non-magnetic drill collar, non-magnetic pressure drill pipe, non-magnet short drill collar, Directional joint, ordinary drill collar, integrated heavy weight drill pipe, square drill pipe, hexagonal drill pipe, spiral drill pipe, centralizer, adapter and some long shaft products.


Q: What differentiates our company from other competitors? 

A:  Competitive Pricing

In today's competitive environment, price is the leading factor influencing customers' procurement choices. We are able to supply quality equipment and spares at competitive prices through our business relationship with a wide network of suppliers, an efficient inventory control and bulk-buying strategy.
 

Strong Customer Relationships with a Wide Customer Base

Over the more than 40 years we have been in business, we have developed strong customer relationships from a wide customer base from all over the world.
 

Strong Relationships with Suppliers

Similarly, throughout more than 4 decades, we have worked with and developed strong rapport with suppliers through shared business experiences.


Q: What certifications do we have that demonstrate our quality standards (i.e. ISO certifications, etc.)? 
A: Our tools are rigorously tested for quality and performance, ensuring compliance with industry standards like API 7-1, API 7-2, SY/T5144, and SY/T5146 specifications. The Company has passed IS09001 quality management system certification and HSE management system certification and has obtained the right to use the logos of API petroleum drilling tools. We also have our professional QC and all the products will be strict inspection and testing for every order before shipping out.