... to use screw pump for mechanical oil production operation. Screw pump wellhead(API 6A Series)Pressure:2000PSI~20000PSIMediumOil, gas, mud, containing H2S, CO2 ... of seal.Working Pressure: 2000PSI~5000PSIWorking Medium: oil,natural gas,mud and gas containing H2S,CO2Working Temperature: -46°C~121°C ... ,FF,HH Specification level: PSL1-4Performance Requirement: PR1-2 Screw Pump Wellhead(API 6A)