QQ-Z-325C,ZINC COATING, ELECTRODEPOSITED has been cancelled. It has been superceded by ASTM B 633. A good website to check on the status on specifications such as this one is called ASSIST.
After entering the site, click on the "Quick Search" button on the left side of the screen. There is no need to join or to login to the site. In the Tell us what you want screen, type in the spec you're interested in the Document ID box and the program will do the rest.