Blown Grade Bitumen

Blown grade bitumen widely used in pipe coating, roofing felts, damp proofing, paints, sealnts, etc.
 We have:
o    80/25
o    85/25
o    85/40
o    10/20
o    115/15

o80/25
o85/25
o85/40
o10/20
o115/15