Wellhead equipment is a very important mechanical device in the process of drilling and oil and gas production, which is generally composed of tubing head, Christmas tree or Christmas tree, casing head, etc.
　　The function of wellhead equipment is very big. It can not only connect casing string and tubing string, seal the annular space between casing and tubing, but also monitor the pressure of production wellhead and regulate the flow of oil and water wells.

　　At the same time, it can also be used for acidizing, fracturing, water injection, testing and other operations.
　　Cementing tools, oil drilling and production equipment and drilling and production equipment accessories, among which floating collar, floating shoe, centralizer, cement head, stop ring and other cementing equipment have become well-known brands in China.
　　In the process of cementing equipment production, Zhongshi group constantly hones the details of production and processing, so that the product quality is constantly improved. Through unremitting efforts, the whole group has passed ISO9000 international quality system certification and American API certification, among which 15 products have won national patents.