API 7-1 Rotary Kelly Drill Pipe Hexagonal Kelly Pipe &Tool Joint &Nc 50 Drilling Pipe

• After-sales Service: 1 Year
• Certification: CE, ISO 9001:2000
• Condition: New
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Drill Hole Diameter: Meet Customer
• Drill Hole Depth: 100-150m
• Bit Type: Drag Bit
• Drilling Way: Compound
• Transport Package: Sea Transport
• Origin: Shi Jia Zhuang of He Bei
• HS Code: 8431431000
• Production Capacity: 3000pices One Month

Product Description

Kelly 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 formulated process can ensure that the misalignment of the hole reaches the standard wall thickness. Kelly bars are manufactured according to API-7-1 Spec.

The Main Technical Specification of Kelly ( Square& Hexagonal ) 

Norminal Size (in)	Length(ft)	Top Upset Joint		Bottom Upset Joint		Bore D	Drive Section
		API BOX Thread Left Hand	Du	Right Hand Connections	DL		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

Detailed Photos

Our Advantages

 

Packaging & Shipping

 

Company Profile

 

About us 

Hebei Xinhuafa Petroleum Machinery Co., Ltd. is a high-tech enterprise and manufacturer that integrates product design, production and sales and service for oil drilling equipment.. The company is located in the beautiful Longhua Town Development Zone 2 hours by high speed train from Beijing. Our factory is mainly engaged in manufacturer of mud pump accessories, including F series, HHF series, 3NB series, Qingzhou 3NB and other mud pump. Our main products are cylinder liners, pistons, piston rods, extension rods, crosshead,v belt and other mud pump accesso ries. All the products all meet the requirements of ISO9001, and API-7K (American Petroleum Association) standards.

Our factory has senior technician and advanced equipment engaged in petroleum machinery manufacturing, and combines the customer's feedback, continuously improve and improve the product technology and quality since 2006. From the first step of raw material order to delivery from our warehouse, we strictly implementation our plan as GB / T19001-2016 / ISO9001: 2015 quality management system and American Petroleum Institute quality system API7K standards for production and testing, product quality are the center of our service. It won a lot of praise from domestic and foreign customers.

High-quality raw materials are our most powerful guarantee. Competitive prices are our most competitive advantage. Customers' good

feedbacks are our consistent pursuit. The spirit of innovation is our most greatest strengths. We will be your good partner in oil drilling field with

our most sincere attitude, full of enthusiasm and dedication to serve our customers!

Certifications

FAQ

 

1) How can I place order?

A: You can contact us by email about your order details, or place order on line.

2) How can I pay you?

A: After you confirm our PI, we will request you to pay. T/T and Western Union are the most usual ways we are using.

3) What's the order procedure?

A: First we discuss order details, production details by email or TM. Then we issue you an PI for your confirmation. You will be requested to do pr -epaid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 15-25days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.

4)How do you take care when your clients received defective products?

A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.

5)How do you check all the goods in the production line?

A: We have spot inspection and finished product inspection. We check the goods when they go into next step production procedure.