Hastelloy Casting Valve Manufacturing: In February 9th, 2018, JEV successfully make Hastelloy Ni-alloy casting CW12MW 6”-1500 gate valves, all casting pass RT/PT inspection. During the manufacturing process, solve the problem of cracks due to the casting pouring and welding, research how the cracks to be formed, so JEV have the capability to make Ni-based alloying valves
