upper end is drill pipe box or union, the nether end is casing pin

API circulation head

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. The top of circulation head connects to the hoses, the bottom connects to the casing.

Features

Its upper end is drill pipe box or union, the nether end is casing pin. It is a crossover(X/O) with hollow inside.

Main body are made from AISI4145H alloy steel.

Specifications

2 7/8inchIF×4inchLTC(BTC),3½inchIF×4½inchLTC(BTC), 3½inchIF×5inch LTC(BTC), 4½inchIF×5½inchLTC(BTC), 4½inchIF×7inchLTC(BTC), 4½inchIF×7 5/8inchLTC(BTC), 4½inch IF×8 5/8inchLTC(BTC), 4½inchIF×9 5/8inchLTC(BTC),  

4½inchIF×10¾inchSTC(BTC)  ,4½inchIF×13 3/8inchSTC(BTC),4½inchIF×16inchSTC(BTC)

4½inchIF×185/8inchSTC(BTC),4½inchIF×20inch STC(BTC)

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