Structures
The series of SR-XX risers are composed of :
*  quick connectors
*   tieback joints
*   tieback connectors 
*   guide shoes .

Properties
*  To realize a quick connecting and disconnecting effect, quick  connectors are furnished with a 
     stabbing and auto-lock  mechanism and rotated torque freely.
*  Can bear enough capacity of internal and external collapse  pressure and tensile and bending
    capacity.
*  Can recover risers above the mud-line.
*  Inside the guide shoe, a cone-shaped space leading to the sealing unit which is easy for the
    cementing tool to insert and seal. This creates favorable conditions to fix the surface conductors.