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API 16A Annular BOP 13 5/8" 5000Psi
2017-01-15 19:47
(1) API SPEC 16A(2) H2S corrosion protection technology (3) With one year spare parts
API 6A Safety Valve
2016-10-23 00:41
Hydraulic drive safety valve,as executive part of safety system on well.can classify both parts of preparation valve an