... to use screw pump for mechanical oil production operation. Screw pump wellhead(API 6A Series)Pressure:2000PSI~20000PSIMediumOil, gas, mud, containing H2S, CO2 gasTemperature ... ,DD,EE,FF,HHStandard:PSL1~4Performance:PR1~2Description:PCP wellhead can use PCP to perform production practice. Make prevented valve ,top flange ...