Full page photo - Petro Tar Co....The most popular grades of oxidized bitumen are grades 85/25,...
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Full page photo - Petro Tar Co....The most popular grades of oxidized bitumen are grades 85/25, 95/25, 90/40, and 1 15/15. PETRO TAR CO capable of producing all grade of Blown Bitumen
![IS 9912 (1981): Coal Tar Based Coating Materials and ... · Bitumen Tar and their Products] IS 9912:2008 (‘m7@’w-) Indian Standard ... microbial interactions, anaerobic bacterial](https://img.pdfslide.net/doc/110x75/602c48e2ad8b64215f781a99/is-9912-1981-coal-tar-based-coating-materials-and-bitumen-tar-and-their-products.jpg)
