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Casing And Tubing Coupling
Classification :
Oil country tubular goods
Keywords :
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
We can provide wooden pallet packaging Wooden packing，Steel strapping packaging.Plastic packaging and other packaging methods.We are wiling to package and shlp products according to the weight, specifications, materials, economic costs and customer requiremenls，We can provide conlalner or buk transporaon, coad,ral or hand walenlay and oherland tanspotalonmehod forexpor.0f course, i there are specdal reoquremens, we can aisouse ar transporaon.
FACTORY
Twenty years of technological accumulation: Twenty years of focus and innovation have enabled us to accumulate profound knowledge of production processes and mature quality management experience. We have a professional technical team and advanced testing equipment to ensure the quality of every factory product.
Customer Testimonials
Shandong Qigang Steel Co., Ltd., adhering to the business philosophy of "Quality First, Reputation Foremost, Customer Supreme," leverages our unparalleled scale advantages, reliable product quality, and competitive prices, looking forward to becoming your most trusted strategic partner in steel products.
Customer Visits
Strong Scale and Strength: We own a modern industrial park covering 10,000 acres, which is not only the cornerstone of our strong production capacity but also ensures economies of scale and supply stability, enabling us to easily handle large-volume, high-standard global orders.
APPLICATION
Steel plates/steel coils: We provide plain carbon steel plates, low alloy steel plates and hot-rolled and cold-rolled steel coils of various materials, thicknesses and sizes with stable quality. Galvanized/color-coated coils: We have advanced galvanizing and color-coated production lines. Our products have good corrosion resistance and decorative properties and are widely used in construction, home appliances, automobiles and other industries.
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Service E-mail
Sales Address
Jinan City, Shandong Province,China
