Casing And Tubing Coupling
Classification :
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 | 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 SHIPPING
The company has domestic first-class professional technical consultants and a team of outstanding employees with professional skills. The main products are carbon steel/galvanized steel. Stainless steel/steel coil steel bars, galvalume, color-coated coils, profiles, steel bars, aluminum products, roof panels. Products are sold to more than 60 countries and regions in Europe, the Middle East, Southeast Asia, and Australia.
FACTORY APPEARANCE
Company As 20000 Square Meters Of Indoor Storage more Than 20,000 Tons Of Inventory, Spot Product Standard Involves European Standard American Standard British Standard Australian Standard German Standard, Now According To Customer Requirements For Product Opening Strip.Cutting.Processing.Annual sales of more than 60 milliontons.Our company owns the firs class professional technique adviser in China and the excellent staffs with professional technology.The main products are carbon steel / galvanized.
APPLICATION AREAS
We promise"complete specifications, prompt delivery, high quality, competitive price, "The unwavering supports you provide, along with the increasing requirements you put contributes to more varied high-quality products with more competitive prices we offer.Win-win situations are always our pursuit.
CUSTOMER VISIT
OUR ADVANTAGE
We have won recognition from our clients due to our good creditand good services.
Professional
Have perfect technical management and R&D process
Experience
Focus on the steel industry for many years
Quality
Product quality meets industry standards
Service
Our company has a professional service team
FAQ
Q：Do you accept the third party inspection?
Q: What ports of shipment are there?
Q: How many countries you already exported to?
Q:How about the delivery time?
Q:Does the product have quality inspection before loading?
Q:What product information do I need to provide?
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Contact: Kelly
Tel : +86 15020871633
E-mail : admin@alsdsteel.com
WhatsApp : +86 15020871633
Add : No. 2 Maolingshan Road, Lixia District, Jinan City
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