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Tiger Bitumen, the international bitumen brand of HY International Group, supplies Viscosity Grade bitumen to buyers around the world, including contractors, consultants, asphalt producers, and infrastructure developers sourcing binder for road projects in Turkey. We operate our own packing and export facilities at Karachi Free Zone, Pakistan, and Ajman Port, UAE, supplying viscosity-graded bitumen as genuine physical merchandise rather than reselling cargo we don’t control.
This page explains what Viscosity Grade bitumen is, how VG, AC, and AR grading actually differ, the complete range we supply, applications, packaging, export documentation, and how international buyers can request specifications or a quotation.
Viscosity Grade bitumen is a paving-grade asphalt binder classified by how it flows at specified temperatures, rather than by a single hardness reading like penetration grading. Viscosity is measured in poises at 60°C roughly the temperature a road surface reaches in hot conditions and, depending on the standard applied, at 135°C, which approximates typical mixing temperature. This gives a more direct read on how the binder will actually behave during production, laying, and in-service heat than a penetration test alone provides.
Because viscosity testing reflects real paving conditions more closely, it lets engineers predict pavement behavior with more confidence, particularly around resistance to tender mixes during compaction and consistent rutting performance in hot climates. Viscosity-graded bitumen is widely specified where either the local road authority’s standard calls for it directly, or where a project needs the more precise mixing-temperature control it provides.
It’s worth being precise here, because these three abbreviations are often lumped together loosely, when they actually represent three distinct testing standards applied to viscosity-graded bitumen:
VG grading (VG-10 to VG-40) follows the Indian Standard IS:73, testing the original binder’s viscosity at both 60°C and 135°C, while also retaining a penetration measurement at 25°C. It’s the viscosity system most commonly referenced across South Asia and increasingly across other markets that have adopted the same standard.
AC grading (AC-2.5 to AC-40) follows ASTM D3381 / AASHTO M226 Method A, and measures the viscosity of the original, as-supplied binder at 60°C only i.e., the binder’s properties before it goes through hot mix asphalt production.
AR grading (AR-1000 to AR-16000) follows the AASHTO M226 Method B counterpart, measuring viscosity at 60°C after the binder has been through a Rolling Thin Film Oven Test (RTFOT), which simulates the short-term hardening that happens during mixing and paving. Because it tests the binder closer to its actual in-service condition, AR grading is generally considered more representative of real pavement performance than AC grading alone.
In practical terms: VG is the grading system to use if your specification references IS:73. AC or AR is the grading system to use if your specification references ASTM/AASHTO viscosity grading with AR being the more performance-representative of the two. We supply grades under all three systems, so the right starting point is checking which standard your project specification actually calls for.
Viscosity-graded bitumen is produced from the same crude oil residue base as other paving grades, refined and blended under controlled conditions to hit a target viscosity rather than a target penetration value. Achieving a consistent viscosity across a production batch requires close control of the refining process, since viscosity is more sensitive to subtle compositional variation than penetration hardness alone.
Each production batch is tested in the laboratory to confirm viscosity at the relevant test temperature(s), alongside penetration, softening point, ductility, flash point, and ageing characteristics where the applicable grading method calls for them. This testing confirms the batch genuinely meets its stated VG, AC, or AR classification before it is approved for shipment.
HY International has the capability to Export and Supply the Viscosity Grades Bitumen in compliance with National and International standards.
Viscosity Grade bitumen is engineered to deliver more predictable pavement performance than penetration grading alone typically provides. Depending on the grade and standard selected, buyers can expect:
Selecting the correct grade and the correct grading system for your specification is what allows contractors and consultants to get the durability and lifecycle-cost benefits viscosity grading is intended to deliver.
Viscosity Grade bitumen is used across infrastructure projects where consistent binder behavior under real production and service conditions matters. Typical applications include:
Buyers sourcing viscosity graded bitumen for infrastructure work in Turkey typically require it where a project specification references a viscosity based standard directly, or where a road authority prefers the more predictable mixing-temperature behavior it offers over standard penetration grading.
VG Grades
AC Grades
AC grades are numbered by original binder viscosity in hundreds of poises at 60°C AC-2.5 is the softest grade in the range, AC-40 the hardest.
AR Grades
AR grades are numbered by aged-residue viscosity in poises at 60°C, measured after RTFOT AR-1000 is the softest, AR-16000 the hardest.
Each grade page carries the specific technical properties and packaging options relevant to that grade. If your project specification calls for a grade not listed here, contact our export team directly we’ll confirm honestly whether it’s something we currently produce rather than list a grade we can’t reliably deliver.
Viscosity Grade bitumen is packed in new steel drums and loaded into containers for direct vessel shipment, giving buyers a format that’s straightforward to receive, store, and distribute without requiring specialized bulk liquid discharge infrastructure at the destination port.
Every production batch is tested before dispatch against the properties relevant to its grading system viscosity, penetration, softening point, ductility, flash point, and ageing characteristics where applicable and SGS inspection is available upon request. Buyers who want independent third party verification before loading can request SGS inspection, appoint their own inspection agency, or arrange to have a representative attend loading in person.
Tiger Bitumen supplies on FOB, CFR, or CIF terms, depending on the buyer’s preferred commercial arrangement and destination port. Our export facilities at Karachi Free Zone and Ajman Port are set up for direct container-vessel loading, giving international buyers including those coordinating supply for projects in Turkey a straightforward path from order confirmation to shipment.
Each export shipment is accompanied by a standard documentation package:
Buyers coordinating import procedures into Turkey, or any other destination, should confirm their own local documentation and customs requirements in advance, as these can vary by port and by the buyer’s import classification. Our export team can advise on what we’re able to provide to support that process.
Tiger Bitumen is committed to supplying Viscosity Grade bitumen backed by genuine production capability, tested documentation, and dependable export logistics. Specifically:
VG-10, VG-20, VG-30, and VG-40 under the IS:73 standard; AC-2.5 through AC-40 and AR-1000 through AR-16000 under the ASTM/AASHTO viscosity standards. Contact our export team to confirm current availability for your required grade and volume.
VG follows the Indian Standard IS:73, testing original binder viscosity at 60°C and 135°C. AC follows ASTM D3381/AASHTO M226 Method A, testing original binder viscosity at 60°C only. AR follows Method B, testing viscosity at 60°C after the binder has been aged via a Rolling Thin Film Oven Test generally considered more representative of actual in-service behavior.
Check your project or road authority specification directly it will reference either IS:73 (VG), or ASTM/AASHTO viscosity grading (AC or AR). If you're unsure, send us your specification and our team can help identify the correct grade.
Yes. We supply international buyers, including those sourcing viscosity graded bitumen for road construction and infrastructure work in Turkey. Send us your project's grade, quantity, and destination details and our export team will respond directly.
SGS inspection is available upon request rather than automatic on every shipment. Buyers who want independent verification before loading should request it when placing their order, and are also welcome to appoint their own inspection agency.
New steel drums, loaded into containers for direct vessel shipment.
A Certificate of Analysis, Material Safety Data Sheet, commercial invoice, and packing list are provided as standard, with a Certificate of Origin and SGS inspection report available on request.
Yes. We quote against whichever commercial term suits the buyer's logistics arrangement and destination port.
Minimum order quantities vary by grade, packaging, and destination contact our export team with your specific requirement for an accurate figure.
Send us your required grade (VG, AC, or AR), quantity, packaging preference, and destination port, and our export team will respond with technical documentation and a firm quotation.
If you’re sourcing viscosity-graded bitumen for a road or infrastructure project in Turkey or any other market tell us your required grade, quantity, and destination port. Our export team will respond with technical specifications, documentation details, and a firm FOB, CFR, or CIF quotation.
Visit: www.TigerBitumen.com
