Kaifeng Instrument Co., Ltd. has strong advantages in the development and production of pipe provers and has decades of experience in the design and manufacture of the various specifications of pipe provers.

Long history, great influence, and complete specifications

The pipe prover is a standard device for large-flow field liquid flowmeter verification, it is developed in the past 60 years. As early as the 1970s, our company successfully manufactured the first Chinese domestic set of DN600 one-way one-ball valveless pipe prover flow calibration device for the Huang Dao Oil Terminal, with a maximum flow rate of 3000m3/h. The completion of this device has established our company's leading position in the flow instrument verification industry. Over the past 30 years, our company has designed and manufactured more than 100 sets of standard volumetric flow calibration devices and pipe provers for users, which are used in major oil fields, pipeline companies and refineries across the country.

Kaifeng Instrument Co., Ltd. designed and manufactured one set of DN600 one-way pipe prover and two sets of DN500 one-way pipe prover for the first, second and third phase projects of Huang Dao Oil Terminal, with the flow rates reaching 3000m3/h and 2000m3/h respectively. It is the largest one-way pipe prover designed and manufactured in China with stable and it has been in reliable operation for more than 20 years. It has far-reaching significance and great influence of the Chinese pipe prover market.

Since the 1980s, Kaifeng Instrument Co., Ltd. has successively designed and manufactured more than 70 sets of volumetric tubes for Daqing Oilfield, Sheng Li Oilfield, Liao He Oilfield, Ji Lin Oilfield, Ji Dong Oilfield, Zhong Yuan Oilfield, Chang Qing Oilfield, Qing Hai Oilfield, and Karamay Oilfield; Produced and manufactured more than 50 sets of volume pipes for PetroChina Pipeline Company, Pipeline Construction Project Manager Department, and Sinopec Pipeline Bureau; produced more than 20 sets of volume pipes for major refineries across the country. In 2001, Kaifeng Instrument Co., Ltd. designed and manufactured one set of DN350 and DN100 one-way one-ball valveless pipe prover for Taiwan Formosa Plastics Group. Since it was put into operation, the work has been stable and reliable. The technical level of the device and the level of automation have reached the international advanced level. It has been praised by users many times during this period.

The pipe provers produced by Kaifeng Instrument Co., Ltd. are complete in varieties and specifications.

According to the form of liquid flow in the pipe, it is divided into one-way one-ball valveless type, two-way one-ball one-valve type, piston type.

According to the installation form, it is divided into fixed type, vehicle-mounted mobile type.

According to the external structure, it is divided into tiled, folded.

The standard pipe diameter is from DN80 to DN600; the flow rate is from 25m3/h to 3000 m3/h.

For more than 30 years, Kaifeng Instrument Co., Ltd. has never ceased the production and manufacture of pipe provers and has accumulated rich experience in design and manufacturing of this product, it has enabled our company to continuously improve the research and development level of pipe prover. The manufacturing level has always been in the leading position in the domestic pipe prover device industry