Casing And Tubing Coupling

Classification :

Product:Casing and Tubing Coupling, Casing Coupling, Tubing Coupling Application:Used for connect 2 joints of tubing or casing Size:Tubing Coupling : 1.9'' - 4-1/2'' Casing Couping : 4-1/2'' - 13-3/8'' Pipe Standard: API 5CT and 5B PSL1/PSL2 J55,K55,N80-1,N80-Q,API 5CT and 5B L80-1,C90, C95,T95, P110, Q125 Surface:Whole Phosphating or inside phosphating and outside coating Thread:NUE, EUE, STC, LTC, BTC etc

E-mail: terente@cntntsteel.com

Whatsapp: +86-18111661558

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Oil country tubular goods

PRODUCT DETAILS

Description

About Tubing coupling

Normally tubing coupling OD maximum is 4 1/2”, as the tubing pipe is applied for the drilling activities (Inside the tubing is the sucker rod to drill/pump the oil), couplings type is more various and rigorous than casing, mostly used is thicken type upset coupling (Internal upset and external upset), for short is EUE coupling, it is the most favorable in tubing connections. Tubing with EU end (EUE) coupling connection also called UPTBG. Because of the end of the tubing is thickened (upset), the connecting stress is better than buttress coupling.

Buttress coupling another type used for tubing connections, it has the same thickness of the pipe body, called NU end (NUE)tubing or TBG.

Features

The oil tubing coupling can solve the problem of fatigue fracture in the existing coupling due to stress concentration. Oil tubing end is connected to the inside wall of the coupling in a tapered thread. The coupling body end and oil tubing are connected with same thread pitch flat thread. The coupling is not easy to produce fatigue fracture, and has good connection effect. It can prevent the accident of oil well pipe string break effectively.

About Casing coupling

Casing coupling is for the dimensions more than 4 1/2 inch. Differently than tubing coupling is, casing coupling normally does not need to be thickened (Non-upset), which means no upset casing coupling, so it has following types:

• BTC: Buttress coupling

• LTC: Long buttress coupling

• STC: Short buttress coupling

All three types has same thickness of the casing pipe body, just have different lengths.

The oil casing coupling is a necessary piece used to connect the two casing. The coupling manufacturing method is the same as seamless pipe. The steel pipe ends with internal thread to connect with the upper and lower casing. In order to ensure the joint tightness, the precision of screw thread is strictly required.

Seamless and ERW Casing

Specification	API 5CT
Grades	K55, N80, L80, C95, P110, Chrome, J55(Modified), J55 (API), PS80
Special Grades	For sour services and for deep well with high collapse properties
Dimensions	OD 4" - 26" WT - 0.2 -0.5"
Length range	1, 2 or 3
Thread connections	API (STC and LTC), BTC, extreme line, etc.

Seamless and ERW Tubing

Specification	API 5CT
Grades	J55 (API) J55(Modified), N80, L80, L80 13Cr, P110, Q125, H40 (API)
Thread connections	API 5B - Last Edition or Premium, EUE, NUE, special seal, metal-to-metal seal and VAGT

Specification

Casing Couplings Short Thread Specifications:

Casing Couplings Short Thread	Casing Size OD (inches)	Coupling Size OD (inches)	Length (inches)	Weight per Coupling (lbs)	Palletized Carton Quantity
	4-1/2	5.000	6.250	8.05	343

PACKING AND DELIVERY

Packing and delivery

The company has been committed to the steel industry for many years, accumulated rich experience and technology, and has a professional team and advanced production equipment. The company mainly produces various steel products, including steel plates, steel pipes, steel coils, steel sections, galvanized color coating, etc., which are widely used in construction, machinery manufacturing, transportation and other fields.

Product Video

FACTORY APPEARANCE

The company has been committed to the steel industry for many years, accumulating rich experience and technology, and has a professional team and advanced production equipment. The company mainly produces various types of steel products, including steel plates, steel pipes, steel coils, steel profiles, galvanized color coatings, etc., which are widely used in construction, machinery manufacturing, transportation and other fields.

APPLICATION AREAS

Shandong Yiyi Iron and Steel Company always adheres to the business philosophy of "quality first, customer first", focusing on product quality and customer service. The company strictly controls every aspect of the production process to ensure stable and reliable product quality.

PRODUCT TESTING

The company has established long-term cooperative relationships with many well-known domestic and foreign enterprises, and its products are exported to both domestic and foreign markets, winning unanimous praise from customers.

CUSTOMER VISIT

The company will adhere to the principles of honest management and win-win cooperation, and work together with customers to create a better future.

Oil country tubular goods