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API 6A Wellhead manifold Check Valves
A haziri valvụ nlele ma mepụta ya kpamkpam dịka achọrọ API 6A 《Nkọwa akụrụngwa maka Wellhead na Osisi ekeresimesi》, enwere ike iji ya na ngwa nkwubi okwu n'ụlọ na mba ofesi dabara na ọkọlọtọ API 6A. Isi ihe na-eji ígwè sulfide na-eguzogide ma nwee ike iji ya mee ihe na ọnọdụ H2S, ahụ valvụ mere site na alloy steel forging na arụ ọrụ dị mma. A na-enye ụdị valvụ nlele abụọ site na landrill: ụdị Swing na ụdị ebuli.
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