©Novel Buddy
PREVIEW
... years ago, and it is the author's experience, and the novel is processed.)
One of the business opportunities that Muyang sees is the surfacing welding of the valve sealing surface:
Surfacing special materials cobalt-based hard alloy STL6 and nickel-based alloy 625, in 2007, the world also has a market size of 2 to 3 billion US dollars.
In the production of industrial valves, welding is the most problematic process. Leakage, cracks, corrosion, etc., are mostly caused by weld ...
YOU MAY ALSO LIKE