2021-06-24
The main technical performance of the copper valve
The strength performance of the copper valve refers to the ability of the copper valve to withstand the pressure of the medium. The copper valve is a mechanical product that bears internal pressure, so it must have sufficient strength and rigidity to ensure long-term use without cracking or deformation.
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
According to the selection of control functions, various valves have their own functions, and attention should be paid to their corresponding functions when selecting.
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
What is a parallel double gate valve? Main material of double gate valve
What is a parallel double gate valve? Parallel double gate valve is also called rising stem gate valve. When opened, the valve stem is exposed to the outside of the valve body and moves up and down. The stem nut is located on the valve cover or bracket, even if the nut rotates, the stem will not rotate, and the opening/closing part will move up and down to open and close the valve.
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.
2021-06-24
Application characteristics of double gate valve
The application of the double gate valve is undoubtedly very helpful to the pipeline system software.
2021-06-24
Introduction to the application and characteristics of two-way hard-touch hard butterfly valve
Two-way hard-to-hard butterfly valves are widely used in industrial pipelines such as low pressure, medium pressure, high pressure, steel metallurgy, petrochemical industry, electric power, etc., to block or regulate the flow of media. This article introduces the structural characteristics and precautions of the two-way hard-touch hard butterfly valve.
2021-06-09
Copper stocks continue to decline today, Zijin Mining drops more than 5%
Copper stocks continued to decline today. As of press time, Zijin Mining fell 5.28% to HK$10.4; China Gold International (02099) fell 4.79% to HK$22.85; China Nonferrous Mining (01258) fell 4.66% to HK$3.48; Jiangxi Copper Industry shares (00358) fell 2.2% to 16.04 Hong Kong dollars.
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
