1.1 This specification covers 14 grades of tar as follows: RT-1, RT-2, RT-3, RT-4, RT-5, RT-6, RT-7, RT-8, RT-9, RT-10, RT-11, RT-12, RT.C.B.-5, and RT.C.B.-6.

ASTM D490-92(2011)
Original price was: $52.00.$26.00Current price is: $26.00.
Standard Specification for Road Tar
ASTM International , 12/01/2011