噎着多方面的

Model :JG-35 The main bore(mm):103 Dimensions:2891×2086×1150 Rated working pressure(MPa):35 Product specification-level:PSL3 The standards of performing:Applicable standards:API16C The bypass bore(mm):65 Weight(kg):2700 Material level:EE Rated temperature:-29oC 121oC Well killing is operated through throttle valve, to replace contaminated mud in wells, simultaneously control wellhead casing pressure and riser pressure, so that mud liquid column plats a role in controlling pressure at the bottom to stop overflow Wellhead pressure is reduced through throttle valve for"soft closing" Wellhead casing pressure is reduced through blowout valve to protect well-head blowout