Specifications
1. circulating head2. API certificate
3.high quality
Circulating head
Circulating head is a specialized tool for circulating drilling fluid when running in casing on the way or finishing running casing downhole. According to actual needs, there are circulating head with casing thread and circulating head with union thread(all size).
connection | Water hole I.D. mm | Length mm | |
Drill pipe thread | Casing thread | ||
NC38 | 5" BTC | 57 | 500 |
5" LTC | |||
5" STC | |||
NC38 | 5 1/2" BTC | 57 | 580 |
5 1/2" LTC | |||
5 1/2" STC | |||
NC50 | 7" BTC | 71 | 600 |
7" LTC | |||
7" STC | |||
NC50 | 9 5/8" BTC | 71 | 620 |
9 5/8" LTC | |||
9 5/8" STC | |||
NC50 | 10 3/4" BTC | 71 | 670 |
10 3/4" STC | |||
NC50 | 13 3/8" BTC | 71 | 670 |
13 3/8" STC | |||
