01 Why is the two-seat valve easy to oscillate when working with small opening?
For a single core, when the medium is flow open, the valve stability is good; When the medium is flow closed type, the stability of the valve is poor.
This exhibition will be held from May 12th to 14th this year at the Zibo Convention and Exhibition Center, with the theme of "green, environmental protection, and energy conservation".
At present, the domestic steel market will exhibit a pattern of "slight decline in supply, insufficient release on demand, and significant downward shift in cost".
Since 2010, China's petrochemical industry has ranked second in the world's petrochemical industry and first in the world's chemical industry. By 2030, China's chemical output value will account for half of the world's total.
In late March, the first pilot test platform for shale oil development in Dagang Oilfield, Cangdong Depression Platform 5, was officially put into production
?On March 7, 2023, the 11th China (Shanghai) International Fluid Machinery Exhibition hosted by China General Machinery Industry Association (hereinafter referred to as "China General Machinery Industry Association")
On January 20, the National Energy Administration announced the top ten landmark achievements of national oil and gas exploration and development in 2022.