2021-06-24
The latest development of copper valve technology
Since the beginning of the 21st century, some well-known domestic copper valve manufacturers have broken conventional ideas and bravely innovated and practiced
2021-06-24
The development direction of special metal bellows materials for copper valves
The material of the copper valve suitable for the production of bellows must have good plasticity, high elastic limit, tensile strength and fatigue strength, good welding performance, and stable elastic performance. Because of these performance characteristics, austenitic stainless steel is widely used in the manufacture of bellows.
2021-06-24
Introduction and subsequent use treatment of double gate valve
The lower end of the valve stem of the double gate valve is integrated with the wedge-shaped cone through the screw and pin shaft. The trapezoidal thread on the top is matched with the stem nut. The rotation of the stem nut is carried out by a manual wheel, wheel, bevel gear, electric or pneumatic device. The valve disc is composed of the upper and lower parts of the finite ring and the wedge regulating valve, respectively, it cannot be raised or lowered by the cone, it can only be translated or rotated by the wedge cone in a horizontally long space.
2021-06-09
China Copper held a June economic activity analysis meeting
A few days ago, China Copper held a June economic activity analysis meeting. Liu Jianping, member of the party group and deputy general manager of Chinalco, and secretary of the party committee and chairman of China Copper, attended the meeting and delivered a speech
