Gold Member Since 2010
Audited Supplier
Puyang Zhongshi Group Co., Ltd.

Circulating Sub, API Circulating Sub, Drilling Circulating Sub manufacturer / supplier in China, offering API Certificated Circulating Sub (drilling circulating sub), Top and Bottom Anti-Rotating Cementing Rubber Plugs, Cementing Stopper/Top and Bottom Rubber Plug for Oil Drilling and so on.

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Supplier Homepage Product Casing accessories API Certificated Circulating Sub (drilling circulating sub)

API Certificated Circulating Sub (drilling circulating sub)

FOB Price: US $10 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $10/ Piece
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Port: Qingdao, China
Production Capacity: 10000PC/Month
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: cs
  • Size: as Requested
  • Material: Carbon Steel
  • Transport Package: Wooden Case or as Requested
  • Origin: Henan, China
  • Color: Black, Green or as Requested
  • Certificate: API
  • Trademark: zhongshi
  • Specification: API
Product Description
API Certificated Circulating Sub (drilling circulating sub)

Description:
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.
4. Main body are made from AISI4145H alloy steel. There are circulating head with casing thread and circulating head with union thread(all size).
Connection TypeI.D.(mm)Overall Length(mm)
Male ConnectionCasing Connection
NC385" BTC57500
5" LTC
5" STC
NC385 1/2" BTC57580
5 1/2" LTC
5 1/2" STC
NC507" BTC71600
7" LTC
7" STC
NC509 5/8" BTC71620
9 5/8" LTC
9 5/8" STC
NC5010 3/4" BTC71670
10 3/4" LTC
10 3/4" STC
NC5013 3/8" BTC71670


Main products:
1. Pumping unit
2. Tubing pump/sucker rod pump and accessories
3. Float collar and float shoe
4. Casing centralizer
5. Cementing plug
6. Cementing head
7. Stage Collar
8. Casing/ Tubing coupling
9. Drill pipe
10. Sucker rod
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