Bitumen 85/25 — Industrial-Grade Air-Blown Oxidized Bitumen Supplier

Bitumen 85/25 is a hard-grade oxidized bitumen with a softening point of 85°C and penetration of 25 dmm, designed for industrial pipe coating, anti-corrosion systems, and heavy protective linings.

It is used for anti-corrosion bitumen enamel coating on steel water mains, gas pipelines, and oil transmission lines, external coating of ductile iron pipes, bituminous paint for structural steel and marine infrastructure, and internal lining of steel tanks and vessels.

Bitumen 85/25 represents a step up in thermal hardness compared to the 75-series grades, offering higher heat resistance for demanding pipeline and industrial coating applications.

Application temperature depends on the specific process but typically ranges from 200–220°C for hot-applied enamel systems; processing above 230°C should be avoided to prevent flash point hazards and premature oxidation.

Yes, it is frequently blended with coal tar in specified ratios to produce coal tar enamel (CTE) formulations with improved chemical resistance and long-term durability, per utility owner specifications.

85/25 has a lower penetration (20–30 dmm vs 30–40 dmm), making it harder and better suited for high-temperature pipeline coating, while 85/35 has higher penetration and is preferred for applications requiring greater flexibility, such as roofing membranes.

Store in a cool, dry, covered location away from direct heat and moisture, in sealed drums or blocks to preserve product integrity.

Yes, Black Rock Bitumen supplies Bitumen 85/25 in drums, jumbo bags, or bulk from Dubai under FOB, CFR, or CIF terms with third-party inspection available. BITUMEN 85/35 H1: Bitumen 85/35 — Durable Air-Blown Oxidized Bitumen Supplier Description: Bitumen 85/35 is a durable, air-blown oxidized bitumen grade engineered with a higher softening point and controlled penetration for superior thermal stability and hardness. This makes Bitumen 85/35 ideal for long-lasting performance in roofing, waterproofing, and industrial protection applications where consistent durability matters most. As a trusted Bitumen 85/35 manufacturer and exporter, we deliver reliable global supply, consistent product quality, and complete technical documentation with every order. CTA: Get a Bitumen 85/35 Quote → ________________ Paragraph 1 – What it is (definition): Oxidized Bitumen 85/35 is an air-blown bitumen grade with a softening point near 85°C and a penetration value around 35 (0.1mm). It combines high thermal stability with controlled flexibility, consistently offering better heat resistance than standard grades while remaining more pliable than harder 85/25-grade petroleum bitumen. (46 words) Paragraph 2 – Where it's used (applications): Oxidized Bitumen 85/35 is widely used in roofing felts, waterproofing membranes, expansion joint fillers, pipe coatings, and industrial sealing applications. Its resistance to flow and deformation makes it well suited for hot climates and exposed surfaces, delivering long-lasting protection across roofing, waterproofing, and infrastru