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| Categories | Drill String Components |
|---|---|
| Model Number: | All types |
| Certification: | API & ISO |
| Place of Origin: | China |
| MOQ: | 1 pc |
| Price: | USD100-1000/pc |
| Payment Terms: | L/C, T/T, Western Union, MoneyGram |
| Supply Ability: | 500 pcs per month |
| Delivery Time: | 20-30 days |
| Packaging Details: | Export Wooden Case or Pallet |
| Product Name: | Factory Price Drilling Crossover Sub/Drill Bit Subs/Lifting Subs For Well Drilling |
| Keywords: | Drilling Crossover Sub |
| Application: | Oil Drilling |
| Material: | AISI 4145H |
| Company Info. |
| Dongying Oilman Machinery Equipment Co.,Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
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)
API Drilling Crossover Sub
| Description | Upper Connection Part | Lower Connection Part | Type |
| Kelly cross-over sub | Kelly | Drill pipe | A or B |
| Drill pipe cross-over sub | Drill pipe | Drill pipe | A or B |
| Interim cross-over sub | Drill pipe | Drill collar | A or B |
| Drill collar cross-over sub | Drill collar | Drill collar | A or B |
| Drill bit cross-over sub | Drill collar | Drill bit | A or B |
| Swivel cross-over sub | Swivel lower sub | Kelly | C |
Fishing cross-over sub | Kelly | Drill pipe | C |
| Drill pipe | Fishing tools | C | |
| Crossover sub can be customized as per customer's design. | |||
Mechanical Properties
| O.D. Range | Min. Yield Strength | Min. Tensile strength | Elongation Min. | Min. Brinell Hardness |
| 3.1/2 THRU 6.7/8 | 760Mpa | 965Mpa | 13% | 285 |
| 7 THRU 10 | 690Mpa | 930Mpa | 13% | 277 |
If any needs, pls contact us freely:
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