What is a Mill Test Certificate? ASTM (testing materials ...
Dec 26, 2008· It can be from the mill itself if they have the equipment or by an outside company who tests for the mill. 3. I can see where they might want a certificate showing what was used to make the PU coating or even a MSDS sheet from you the supplier but a MTR is just that, a MILL test report so sounds to me like they want it for the pipe. 4.