Casing And Tubing Coupling
Classification :
keywords :
Casing And Tubing Coupling
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 |
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 |
Warehouse Storage
The company has many years of domestic high-quality steel production experience, to provide one-stop service for global customers. The main products are PPGI, galvanized steel coil, color coated aluminum coil, carbon steel coil, round rod, various materials of steel pipe, stainless steel products, Angle steel, H steel, I steel, flat steel and so on.
Packing and shipping
The company adheres to a strict quality control and management system to ensure that every batch of products meets national and industry standards. Through continuous technological innovation and quality improvement, the company's products have earned a good reputation and word-of-mouth in the market.
Application field
The company focuses on communication and cooperation with customers, and strives to understand their needs and provide the best solutions. The products provided by the company are not only guaranteed in terms of quality, but also competitive in terms of price, creating greater value for customers.
Customer Visit
Prev
OUR ADVANTAGE
WHY CHOOSE US
ADEQUATE INVENTORY
Sufficient inventory for you to choose from, high quality and low price, buy with confidence.
QUALITY ASSURANCE
We adhere to strict quality control and every product is carefully crafted to ensure worry-free quality.
ATTENTIVE SERVICE
Our team consists of a group of experienced and skilled professionals who can provide customers with first-class services.
HIGH COST PERFORMANCE
The products are not only of excellent quality, but also reasonably priced and extremely cost-effective.
FAQ
RELATED PRODUCTS
GET A FREE QUOTE
CONTACT US
E-mail : sunny@longzesteels.com
Add : Heilongjiang Road, Liaocheng Economic and Technological Development Zone, Shandong Province
SCAN IT
GET A FREE QUOTE
Copyright 2025 : Shandong Longze Metal Materials Co., Ltd. Powered by：CEglobal SEO BUSINESS LICENSE
