Premium Connection TP-CQ Series

Winsteel Group supplies Premium Connection TP-CQ Series. These products from TPCO. We have built a long-term and reliable relationship with TPCO. Winsteel Group Limited is a modern professional industry and trade combined enterprise, specializing in producing and trading seamless steel pipes.

In order to provide service in tough application surroundings, WRG supplies optimal performance and premium connections, which are widely used by our customers in South-East, South America, and Africa. Most important, our premium connections can greatly improve the usage span life and save costs for the end-user.

Scope of Premium Connection TP-CQ Series

Size Range: 2-3/8 in ~ 14-3/8 in

Advantage of Premium Connection TP-CQSeries

  • Firstly, High-performance gas-tight premium connection for casing and tubing.
  • Secondly, Excellent gas seal-ability under combined load
  • Thirdly, Easy stabbing, no cross-threading
  • Fouthly, Superior anti-galling performance
  • and Repairing easily
  • Further, Suitable for low alloy & carbon steel pipe
  • ISO13679:2002 CAL IV qualified
  • API 5C5:2017 CAL IV qualified
Premium Connection -TP-CQ


  • Horizon and deep wells
  • Surface and intermediate casing
  • Tubing
  • Production casing, tie back, and liners
Premium Connection -TP-CQ A


  • Modified buttress thread
  • Taper=1:16
  • TBG: 2-3/8in~2-7/8in: 8T.P.I.
  • 3-1/2in~4-1/2in: 6T.P.I.
  • CSG: 5in~14-3-/8in 5T.P.I.
Premium Connection -TP-CQ B


  • Metal-to-metal
  • Tapered pin and box seal
  • Reverse angle torque shoulder
  • Internal flush

1 . Description of Premium Connection TP-CQ Series

1.1 Threaded connection

Certainly, Improved buttress thread form with a taper of 1:16. Meanwhile, the clearance at the top of the thread crests minimizes thread galling. And avoids the trapping of compounds inside the threads.

1.2 Metal-to-metal seal

That is to say, metal-to-metal seal surface provides enough contact length and contact pressure. On the other hand, the metal-to-metal seal system offers excellent gas-tight sealing, even under the most severe combined loads. The seal integrity remains constant after repeated make-ups and break-outs. Optimized thread geometry minimizes the risk of galling, even when thread lubricants are poorly applied.

1.3 Reverse angle torque shoulder

Certainly, the reverse angle torque shoulder provides a positive torque stop. Which allows accurate power tight make-up. And minimizes hoop stresses of the connection. The ”wedge” effect caused by the reverse angle gives the connection a superior structural strength. The shoulder design is optimized in order to resist adverse conditions such as combined compression and external pressure or combined bending, compression, and torque.

1.4 Streamlined internal profile

A pin ID chamfer, tight tolerances on the coupling center, and a long shoulder combine to minimize turbulence and energy loss inside the connection for high-velocity gas flows.

1.5 Coupling design

Joint efficiency is more than 100% and the coupling critical section is greater than the pipe body section. Because the coupling covers the vanishing threads, the connection tensile efficiency is maximized.

1.6 Connection low-stress design

Connection low-stress design can ensure that it can be safe in a corrupt environment.

2 . Finite Element Analysis on Premium Connection TP-CQ Series

TP- CQ L80 9-5/8″ × 53.5#

Finite Element Analysis (FEA) graphically illustrates the low-stress design. Which makes TP-CQ the excellent choices for critical good applications.

Options of Premium Connection TP-CQ Series

  • Firstly, TP-CQ D: Optimized Design
  • Secondly, TP-CQ HC: High Compression
  • Thirdly, TP-CQ HT: High Torque
  • Fouthly, TP-CQ(SB): Special Bevel
  • Fifthly, TP-CQ(SC): Special Clearance
  • Sixly, TP-CQ(MS): Match Strength
  • Further, Dope Free Solution

Performances of Premium Connection TP-CQ Series

Threaded Connection

Improved Buttress thread with a taper of 1:16. The clearance at the top of the thread crests minimizes thread galling. Meanwhile avoids the tapping of a compound inside the threads.

Metal-to-Metal Seal

In short, Metal-to-metal seal surface can provide enough contact length and pressure. The seal system offers excellent gas-tight sealing. Even under the most combined loads.

Reverse Angle Torque Shoulder

That is to say, the reverse angle torque shoulder provides a positive torque stop, which allows accurate power tight make-up and minimizes hoop stresses in the connection strength.

Streamlined Internal Profile

So A pin ID chamfer. Tight tolerances on the coupling center combined with a long shoulder will minimize turbulence and energy loss.

Coupling Design

Joint efficiency is more than 100% and the coupling critical section is greater than the pipe body section.

Connection Low Stress Design

In other words, Connection low-stress design ensures safer under a corrosive environment.

Related Products



Seamless Steel Pipe