| After-sales Service: | 24/7 |
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| Warranty: | 12 Months |
| Manufacturing Process: | Casting |
| Surface Treatment: | Polishing |
| Operation Pressure: | Atmospheric Pressure |
| Material: | Alloy Steel |
| Customization: |
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Crossover sub is mainly used to connect upper and lower drill tools in different connectors in drilling operations. Also it can be used to protect other tooling in drill stem (called saver sub) or be used to deliver outgoing air to the bit face just above the bit (called bit sub).
The length of crossover subs is generally measured from shoulder to shoulder. Typical lengths range from 6" - 28" long going up in increments of 2 inches with AISI 4145H, AISI 4145H Mod, AISI 4340, AISI 4140-4142 and Non-magnetic material. All connections are phosphate-coated or copper plated to improve resistance to corrosion. Crossover subs come in three basic types: A Pin (male) * Box (female); B Pin (male) * Pin (male); C Box (female) * Box (female)
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Crossover sub
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Description
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Upper Connection pat
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Lower Connection Part
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Type
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Kelly cross-over sub
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Kelly
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Drill pipe
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A or B
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Drill pipe cross-over sub
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Drill pipe
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Drill pipe
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A or B
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Interim cross-over sub
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Drill pipe
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Drill collar
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A or B
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Drill collar cross-over sub
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Drill collar
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Drill collar
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A or B
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Drill bit cross-over sub
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Drill collar
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Drill bit
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A or B
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Swivel cross-over sub
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Swivel lower sub
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Kelly
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C
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Fishing cross-over sub
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Kelly
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Drill pipe
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C
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Drill pipe
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Fishing tools
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C
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** Crossover sub can be customized as per customer's design.
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Xi′an BOBAN Oil Tools Co., Ltd. Make & Supply a full line of equipment for O& G, horizontal directional drilling (HDD), micro-tunnelling, pipe jacking, etc, In O& G section, we can supply drilling rig component, downhole drilling tools, fishing tools, tubular handling tools, well control equipments, drilling fluid mixing & Recycling system, solid controling equipments and other relevant oiltools,
All our products are API certified, and we are also authorized by ISO: 9001-2000. With advanced production facilities, rigorous quality management, and the joint efforts of our experting staff, Boban has been qualified vendor for many renowned companies in Italy, Germany, Poland, UAE, Kuwait, Egypt, & South East Asia, etc since its establishment in 2018. And obtained a good reputation among the offshore customers as well as other industrial clients.
With our reasonnal prices, quick reaction, high quality products and deliver anywhere on time as well as superior service, Boban has stablished good cooperation relationship with many well-known customers in the world, and also wish to have the chance to work with more and more customers from all over the world!
Pre-Sales Service After-Sales Service
* Transaction Level Five Stars * Supplier Service Five Stars
* Response Rate 86.5% * On-time Shipment Five Stars
* Response Time<12h * Product Quality Five Stars
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