| After-sales Service: | Yes |
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| Warranty: | 1 Year |
| Manufacturing Process: | Casting |
| Samples: |
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| Customization: |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier The Well drilling Circulating Sub is used to circulating drilling fluid while running casing or finishing of the casing running to do the mud circulation from the rotary hose directly to the casing of the downhole.
Use:
1. The top of circulation head connects to the kelly, the bottom connects to the casing. It is used to circulate the cement slurry before cementing. Sometimes the cementing head can be replaced by lifting circulation head.
2. The top of circulation head connects to the hoses, the bottom connects to the casing.
3. Its upper end is drill pipe box or union, the nether end is casing pin. It is a crossover(X/O) with hollow inside.
Applicable Industries: Energy & Mining
Use::Well Drilling
Place of Origin: Shandong, China
Brand Name: Zhao Xin
Material: Alloy steel
Type: Drill Pipe Thread/Hammer Union Thread
| Thread/ Model | I.D.(mm) | Length(mm) | |
| Drill pipe box connection | Casing thread | ||
| NC38 | 5 BTC | 57 | 500 |
| 5 LTC | |||
| 5 ST & C | |||
| NC38 | 5 1/2 BTC | 57 | 580 |
| 5 1/2 LTC | |||
| 5 1/2 ST & C | |||
| NC50 | 7 BTC | 71 | 600 |
| 7 LTC | |||
| 7 ST & C | |||
| NC50 | 9 5/8 BTC | 71 | 620 |
| 9 5/8 LTC | |||
| 9 5/8 ST & C | |||
| NC50 | 10 3/4 BTC | 71 | 670 |
| 10 3/4 LTC | |||
| 10 3/4 ST & C | |||
| NC50 | 13 3/8 BTC | 71 | 670 |
| 13 3/8 LTC | |||
| 13 3/8 ST & C | |||
Suppliers with verified business licenses
Audited Supplier 
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