Specifications

1. circulating head
2. 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