... during drilling 3.Apply to all kinds of casing Multi-block wellheadPressure2000PSI~20000PSIMediumOil, gas, mud, containing H2S, CO2 gasTemperature-46°C ... casing, tubing program.• Optional sealed using a variety of forms.• Working Pressure: 2000PSI ~ 20000PSI• Medium: oil, natural gas, mud, containing H2S ... Level: PSL1 ~ 4• Performance Level: PR1 ~ 2 API 6A Multi-Block Wellhead