API 7-1 Crossover Sub of 3-1/2 REG pin x NC38 box
API 7-1 Crossover Sub of 3-1/2 REG pin x NC38 box
About this product
. Product Title: The API 7-1 Crossover Sub is a high-quality audio solution, designed with a 3-1/2 REG pin x NC38 box configuration, providing optimal sound performance in various settings.
. After Warranty Service: Our dedicated support team is available to assist you with Video Technical Support and Online Support, ensuring that any issues or concerns are addressed promptly and efficiently.
. Machinery Test Report: The product comes with a Machinery Test Report, guaranteeing the quality and reliability of the API 7-1 Crossover Sub for your peace of mind.
. Original Condition: The API 7-1 Crossover Sub is brand new, delivered in perfect condition as per the manufacturer's standards.
. API Certification: This product is certified by the reputable API organization, ensuring that it meets the highest standards in terms of performance, durability, and safety.
API 7-1 Crossover Sub of 3-1/2 REG pin x NC38 box
Product Description
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)
Technical Parameters Description:
| Technical Parameters | |||
| Crossover sub | |||
| Description | Upper Connection pat | 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. | |||
FAQ
1. How to order?
Please send us your inquiry with detail item description or with Model number.
If there is no packing demand we take it as our regular exported standard packing.
We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
You send us your detail requirement, we provide quotation to you.
2. Can I expect a quality products?
All the production and processing are strictly according to ISO 9001:2008 and API standard. At the same time, mature production technology ensuring the quality satisfy international request. We also welcome the third party inspection, such as BV, SGS and TUV.
3. The information you may like to know before Payment:
1）. Methods of Payment:
T/T (Telegraphic Transfer) or L/C at sight
2）. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
3. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
