1. Defect characteristics
Unfused refers to the phenomenon that the weld metal is not completely melted and bonded with the base metal or between the layers of the weld metal.
Failure to penetrate ...
When it comes to the world of commercial butterfly valves, not all devices are created equal. There are many differences between the manufacturing processes and devices themselves that change the s...
In the 30s, the butterfly valve was invented in United States, introduced to the Japan in the 50s, and was widely used in Japan in the 60s, and it was promoted in China after the 70s. At present, b...
Before the valve is installed, the valve strength test and valve sealing test should be performed on the valve hydraulic test bench. 20% of low-pressure valves should be inspected randomly...
Valves are not only widely used in various industries, but also use different environments, and some valves in harsh working environments are prone to problems. Since valves are important equipment...
We’re thrilled to announce that our company will be participating in the 9th China Environmental Expo Guangzhou from September 17th to 19th, 2025! You can find us at the China Import and Expo...
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