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Хятад бүрэн гагнасан хоолойн бөмбөг хавхлагын үйлдвэр …
Fully Welded Pipeline Ball Valve Gas Exhaust Full Welded Ball Valve API6D Full Welding Ball Valve Specification Short Description: Since the seat of the API 6D fully welded ball valve is made up of a carbon teflon seal ring and a disc spring, it is adaptable to changes...
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