API oil drilling circulating sub for casing
USD $10 - $100 /Piece
Min.Order:1 Piece
Puyang Zhongshi Group Co., Ltd.
Specifications:
Material: Carbon Steel,AISI4145H alloy
Size: all sizes
Thread protector: PVC or steel
Position: connect kelly,casing pipe and hose
Price: competitive low price
Circulating sub
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.