La description
According to the structure of the packing unit,The annular blowout
preventers are divided into the tapering packing unit annular BOP
and the spherical packing unit annular BOP.
The features of tapering packing unit annular BOP:
1. The tapering packing units are exchangeable with the HYDRIL
's
2. the added wear-belts to the original design can prevent and
improve the Cylinder-grinding because of unbalanced loading.
3. The fortified rings can lift the whole BOP stack
4. Screws connection type is convenient for
assembling/disassembling and exchange of the packing units.
The specifications and the parameter *3 5/8" ****0/****0psi Annular
BOP Bore:*3 5/8 Working pressure:****0psi Top connection:*3 5/8"
****0psi 6BX BX**9 SST Studded Bottom connection:*3 5/8"***0psi 6BX
BX**9 SST Flanged
 The features of Spherical packing unit annular BOP
1. The spherical packing units are exchaangable with the
SHAFFER'S
2. The added wear-belts to the original design can prevent and
improve the Cylinder-grinding because of unbalanced loading
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