MSP Hydril 21 Inch Annular BOP Packing Element 2000 Psi For Well Drilling BOP
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tapered 21 1/4 Inch 2,000 Psi Packing Element For BOP Feature Packing Element For BOP with reasonable structure, easy operation, long life of plastic core, adapt to a wide range, capable to seal pipe string with nominal paths from 0-DN in ans shapes, ......
Hebei E-valves Petroleum Equipment Co., Ltd.
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