21 1/4” 2000psi Annular BOP

> Annular BOP is simple and requiresless-maintenance.
> Low profile saves the installing space
> Packing unit has enough rubber volume and long service life.
> Wide losing rang,losing various sizes of drill tools and wire line less  than  Bop  bore
> According to the latest API Spec  16A standard, NACE MR-01-75 and quality standard of ISO 9001
> H2S Trim.
> Packing  unit  can  be  interchenged  by  Hydril's