Casing And Tubing Coupling
Classification :
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 |
Factory appearance
We are a manufacturer and exporter specializing in metal material research, production, retail, wholesale, packaging, after-sales. We have been engaged in export trade for more than 10 years and have rich experience in this field.
Packing and delivery
Our main products include carbon steel plates, carbon steel coils, carbon steel pipes, carbon steel bars, stainless steel plates, stainless steel coils, stainless steel pipes, color-coated coils, color tiles, galvanized plates, galvanized coils, galvanized roofing, galvanized zinc, etc. With many competitive advantages such as complete varieties, sufficient inventory, excellent quality, low prices, short delivery time, and good after-sales service.
Customer visit
Our products are sold well in China and exported to South Korea, Japan, Russia, Germany, Britain, Austria, Czech Republic, Hungary, Netherlands, Slovenia, Bulgaria, Egypt, Saudi Arabia, Iran, Kuwait, UAE, Turkey, Israel, Syria, Lebanon, Jordan, Yemen, Cyprus, Philippines, Vietnam, Malaysia and many other countries...
Application field
Steel pipe is the most basic and common material in the field of construction. First of all, as a building structural material, steel pipe is often used in the construction of supports, bridges and building frames to ensure their stability and safety. Secondly, steel pipe is also a material widely used in building decoration projects, and can be used to make interior decorations, guardrails, flower stands, etc.
COOPERATIVE PARTNER
FAQ
Q: Do you have quality control?
A: Yes, we have gained BV, SGS authentication.
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-45 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So wecan give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit. 2.We respect every customer as our friend and we sincerrly do business and make friends with them, no matter where they come from.
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