The connection method for steel reinforced HDPE corrugated pipe is by TWO couplers with ONE piece rubber rings.

The couplers can be inserted into the steel reinforced pipe plain end firstly. Then weld the couplers and pipe by hand extruding machines 

Third step is to put the rubber ring into the socket, then put the coupler insert another.

This is the fast and easy way to connect the steel reinforced spiral HDPE Pipe. Only use two pieces of HDPE sockets and rubber rings.

-No need to do welding at site

-No need other machines 

-Reliable connection solution without leakage 

-High stiffiness up to SN16

-Low cost