Element Test Alloy 20
this is round OD190 alloy 20 rod .
which can be checked by handheld spectoradiometer.
or sometimes we call it PMI , to test and material.
so that the elmement data would be show into equipment .
we use that to purchase the material to make qualify.
regarding alloy 20 , this is a kind of nickle alloy , have excellent ability to resistant to sulphuric acid.
for more detial , pls visit our page "alloy 20" .