Hello
The seating configuration on-board Qatar airways Boeing 777-3DZ/ER is a 2-2-2 configuration and and each seat can recline to become a 180-degree flat bed , the pitch is 78 inches.
This is a picture of the business class:
http://cdn-www.airliners.net/aviatio.../9/1494924.jpg
The following is a trip report (I apologize that it is in french) that can give you more of an idea about Qatar airways business class on-board the Boeing 777-3DZ/ER :
http://flight-report.com/en/report-7189.html
I wish you a pleasant flight.