Iran Oxidized Bitumen 90/40
Oxidized bitumen 90/40 is using in roofing manufacturing plants to produce shingles, roll goods, built-up roofing felts, and under layment felts, these oxidized asphalt 90/40 are shipped cold in bag and heating to became hot until used in the manufacturing process . Most blown bitumen 90/40 used to produce "mopping-grade" roofing asphalts. These bitumen 90/40 are generally shipped as a solid and heated in a kettle at the work site.
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