Coupling connection type, the connection strength reaches to or over that of pipe body；
Thread is improved buttress thread
with high connecting efficiency,
which is easy to process.
The reverse torque shoulder improves
the connection capacity of bearing
The inner wall of pipe body aligns with the coupling inner wall.
Connecting strength: the connection with standard coupling can reach to the strength of pipe body.
Seal property: the low angle taper to taper interference seal, further strengthened by the reverse angle torque shoulder. The multi seal configuration ensures the connection to have high seal reliability.
With the reverse torque shoulder, the joint has high capability to resist the compression, bend and over-torque loads.
Inner flat design reduces the gas and liquid turbulence in the pipe, so lower the energy loss.
Anti-galling design: it is permitted to makeup and breakout for several times.