High Quality API 5CT oil well tubing pipe coupling/X-over/ crossover subs joint/ premium thread

A crossover sub is used to crossover from one connection size to another or as the disposable component used to extend the connection life of a more expensive drill stem member.

Crossover subs are available with:

1. box x pin

2. box x box or

3. pin x pin connections.

Crossover Subs are manufactured from 4145H alloy steel. The connections are protected by a phosphate surface coating that minimizes galling on initial make-up.

A type is straight OD sub, B type is reduced section sub, C type is left hand.
Crossover subs are available with:
·   box x pin
·   box x box or
·   pin x pin connections.
Crossover Subs are manufactured from 4145M or 4140HT alloy steel.
The connections are protected by a phosphate surface coating that minimizes galling on initial make-up.
When ordering, please specify:
· Identify sub use. Example: Kelly Sub, crossover drill pipe to drill collar, drill collar to drill collar, bit sub, etc
· Overall length
· Largest diameter
· Bore ID
· Size and type of upper and lower connections, indicating pin or box
· Cast or pressed-steel thread protectors
· For Reduced Section Subs, add: diameter of reduced section
· Length of reduced section: 8", 12", 18" or 24" For Bit Subs, add: float bore size and type if desired

Pre-Sales Service                         After-Sales Service

* Transaction Level Five Stars           * Supplier Service Service Five Stars
* Response Rate 86.5%                      * On-time Shipment Five Stars
* Response Time<12h                         * Product Quality Five Stars                       

Packaging                         

Packaging Details:Bundling and container packaging, we will put moisture-proof and rust-proof materials in the container to resist the harsh environment during transportation.

Q1,Could you do OEM Service?
A: Some items accept this service, pls contact us for details.

Q2: What's your Delivery Time?
A: In generally , the delivery time is about 3-7 days for sample order. We will make the delivery asap with the guaranteed quality.

Q3:What's the convenient way to pay?
A: Trade Assurance, L/C,T/T,Western Union and Escrow are accepted , and if you have a better idea, please feel free to share with us.

Q4:Which mode of transport would be better?
A: In general , we advice to make delivery by sea for large order, and for small order,Courier,By Air both ok,Also we respect your views of other transportation as well.

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