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Vigor Drilling supply the X-Over Pin (Male) x Box (Female), Pin( Male) x Pin (Male) and Box (Female) x Box(Female) for Drilling string crossover sub.China Vigor's Crossover Sub (X-Over) is used for crossing over from the size of a single connection to the another. Also used for prolonging the connection life of a more expensive drilling component.Drilling String Crossover Sub are available with:Box x PinBox x Box orPin x Pin ConnectionsCrossover Sub is manufactured from 4145H. The connections are protected by a phosphate surface coating that reducing the galling when the initial make-up takes place. Sub is manufactured according to API 7-1 Specification.In addition,China Vigor also supplies variety of rotary sub:Straight SubStraight Sub is used to connect drilling string components that have a similar outside diameter.Reduced SubReduced Sub is used to connect drilling string components that have different diameters that warrant the cross-sectional change necessary to accommodate different connections. This sub would be used to crossover large OD drilling tools or a tapered drill collar string.Saver SubSaver Sub is used to extend the life of the kelly by taking the connection wear each time it is made up to a drill stem component.If you are looking for competitive, high quality and fast delivery oilfield crossover and subs in stock, or if you are planning to buy crossover and subs API from one of the leading drilling crossover subs, aisi 4145h crossover manufacturers and suppliers China, please feel free to contact VIGOR.
