... 1.we could Zirconia and Alumina inner sleeves 2.the outer shell was made my 45# forging steel API ceramic liners for ... . As per this materal, the tenacity breakpoint is K10--15MPa ( 10 times of the ordinary material), bending strength is σ600--800Mpa ... -1600.GARNDER-DENVER:PZ-7,PZ-8,PZ-9,PZ-10,PZ-11,PZ-L;PA-8,PAH,FY-FXD,FO ... -FXO,FD-FXX,FG-GXG.NATIONAL OILWELL:10-P-130,12-P-160,8-P-80,7-P ...