API 5CT Tubing and Casing Coupling 2-7/8 2-3/8 3-1/2

• After-sales Service: He Qinglei 13140072113
• Warranty: 1year
• Name: API 5CT Tubing and Casing Coupling 2-7/8 2-3/8 3-1
• Model NO.: 2-7/8 2-3/8 3-1/2
• Thread: Nu EU
• Grade: K55 J55 L80 N80 P110
• Usage: Oil Pipe
• Transport Package: Wooden Pallet
• Trademark: EASTLONG
• Origin: Puyang China
• HS Code: 7307990000

Product Description

Company Profile

Tianjin Dongfanglong Machine Manufacture Co., Ltd was established in 1999 and is a national high-tech enterprise concentrating on petroleum specialized pipes, petroleum specialized drilling and production tools, and petroleum specialized automation equipment. The company has 46 engineers and highly skilled talents, over 50 independent intellectual property rights, and have created the industry's first professional e-commerce platform, the "Dongfang Yunlong E-commerce Platform". It has formed an industrial chain that integrates the design, research and development, manufacturing, sales, testing and experimentation,and technical services of petroleum machinery products and CNC automation equipment, which can meet customers' full cycle service needs for products.

Since its establishment, the company has successively passed the ISO9001 quality system, ISO14001 environmental management system, ISO45001 occupational health and safety management system certification, HSE health, safety and environmental management system certification, and integration management system certification. In 2007, the company obtained the API 5CT certificate authorized by the American Petroleum Institute and the quality supplier assessment certificate issued by BV France. With excellent system management and quality control, Dongfanglong won the "Mayor of Puyang City Quality Award";

The company takes the "Dongfang Yunlong E-commerce Platform" as its core and promotes it through multiple platforms, successfully building a petroleum equipment industry alliance and conducting domestic and international trade. Dongfanglong utilizes a large digital platform as its carrier to fully integrate customer resources, analyze customer types, expand business types, and conveniently and quickly complete cross-border electronic business. It aims to focus on the company's proprietary products, drive the sales of petroleum machinery in the industry, and quickly occupy and expand the market share of petroleum machinery products through e-commerce platform sales. By continuously cultivating and introducing sales elites, improving the official website sales platform, and increasing international promotion investment, our products are exported to 31 countries and regions such as the United States, Russia, and the United Arab Emirates.

In the future, Dongfanglong will solidly implement the new development concept, guided by the new development concept of innovation, coordination, green, openness, and sharing. It will closely focus on national policy guidance, formulate a sustainable development transformation strategy, anchor the goal of becoming a century old enterprise and striving for national glory, continuously forge ahead, and work together with people of insight from all walks of life to achieve win-win results, jointly building the dream of soaring petroleum equipment manufacturing.

Product Parameters

Tubing Couplings

We carry size range of 2-3/8", 2-7/8″, 3-1/2″,4″ and 4-1/2″ in J55, K55, N80, P110 grade. All of our couplings meet the API Specifications 5CT/5B.
Couplings are short lengths of pipe used to connect 2 joints of tubing or casing. They come with painted colour codes on their external surface to indicate their grades.
API EUE Tubing Couplings
Designed in accordance with API 5CT/5B and are made of good seamless steel. EUE petroleum tubing coupling cover the outer diameter from 77.80mm to 141.30mm, that is bigger than the outer diameter of the non upset threaded end product. The API external-upset-end (EUE) tubing connection is widely used because it is a good, serviceable connection in most wells. The EUE joint has a designed joint strength in tension and pressure strength greater than that of the pipe body and, therefore, is considered a 100% joint efficient connection.


API NUE Tubing Couplings
Designed in accordance with API 5CT/5B and are made of good seamless steel. NUE tubing coupling possesses the outer diameter range from 73.02 to 132.08mm. API nonupset (NUE) tubing is used much less than EUE tubing. The cost of NUE is only slightly less than EUE, and the joint strength is substantially less. The coupling joint diameter of NUE is less than EUE, which offers some advantages when clearance is small.
1.Size: 2-3/8" 2-7/8″, 3-1/2", 4″, 4-1/2″
2.Standard: API 5CT /5B
3.Type: EUE  NUE
4.Grade:J55/K55/N80/L80/P110
5.Packaging: wooden pallet, tight wrapped /W paper carton


Raw Material Selection
Mechanical test including tensile strength
Impact test
Chemical properties control
Sulfide stress cracking test (for Material grades in C90 or T95)
Size tolerances, OD, Wall Thickness, Length and Straightness
Threads control, threads quantity per inch, threads angle etc (Premium threads option will be more rigorous)
Heat treatment
Additional markings
Material certification
Product Specification Level (PSL-2 or PSL-3)

 

Descriptions and size		Type of Thread	O.D*L(mm)	Weight(kg)
Tubing Coupling	2-3/8	NUE	73.02*107.95	1.28
	2-3/8	EUE	77.80*123.82	1.55
	2-7/8"	NUE	88.90*130.18	2.34
	2-7/8"	EUE	93.17*130.35	2.4
	3-1/2"	NUE	107.95*142.88	3.17
	3-1/2"	EUE	114.30*146.05	4.1
	4	NUE	120.65*146.05	4.35
	4"	EUE	127.00*152.40	4.82
	4-1/2"	NUE	132.08*155.58	4.89
	4-1/2"	EUE	141.30*158.75	6.05

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.