Oct. 2009 CNPC conducted Blowout Contingency Plan Drill in Guanghan, Sichuan Province. The 4’’ x 5000 psi flexible choke & kill hose and 1’’ x 5000 psi BOP hose manufactured by Jingbo were set on natural gas fire with pressure at 3300 psi, flame temperature 830°C and lasted for 12mins without quality problem on hose body.