Rubber-grade carbon black supplied through a deeply integrated supply partnership — we operate as the producing plant's dedicated export agent, which means plant-level pricing and capacity committed before we quote. The range is the full N-series for tyre and general rubber applications, tested to GB 3778-2021 and shipped in FIBC with a COA per lot.
Fourteen N-series grades, from high-abrasion tread blacks through to low-structure semi-reinforcing grades — the complete reinforcement range a tyre plant, hose and belt maker or general rubber goods compounder works with. Grade designations follow ASTM D1765; routine testing is performed to GB 3778-2021 and the values below are typical targets, confirmed per lot on the COA.
| Grade | Typical specification | Packing | Typical applications |
|---|---|---|---|
| N115 | Iodine 145 g/kg, DBP 113 | FIBC | High-reinforcing tread compounds and high-strength rubber goods where maximum abrasion resistance is required |
| N121 | Iodine 121 g/kg, DBP 132 | FIBC | Tyre tread and conveyor belt covers — high structure for high filler loadings |
| N134 | Iodine 142 g/kg, DBP 127 | FIBC | High-abrasion tread compounds and off-the-road tyre carcass compounds |
| N220 | Iodine 121 g/kg, DBP 114 | FIBC | Tyre tread, conveyor belt covers and moulded goods needing high abrasion resistance |
| N234 | Iodine 120 g/kg, DBP 125 | FIBC | High-performance tread compounds and industrial rubber products under severe service |
| N236 | Values on COA (producer grade) | FIBC | Abrasion-resistant compounds and extruded goods requiring a processing window between N220 and N330 |
| N330 | Iodine 82 g/kg, DBP 102 | FIBC | The general-purpose tread and carcass grade — tyres, hoses, belts, moulded and extruded goods |
| N339 | Iodine 90 g/kg, DBP 120 | FIBC | High-structure tread compounds, tyre sidewalls and high-modulus extrusions |
| N347 | Iodine 90 g/kg, DBP 124 | FIBC | Tyre tread and retread compounds, and mechanical goods requiring high reinforcement |
| N351 | Iodine 68 g/kg, DBP 120 | FIBC | Extrusion and calendering compounds where high structure gives dimensional stability |
| N375 | Iodine 90 g/kg, DBP 114 | FIBC | Tread and industrial rubber compounds balancing reinforcement and heat build-up |
| N550 | Iodine 43 g/kg, DBP 121 | FIBC | Fast-extrusion grade for hoses, profiles, seals and cable compounds — smooth surface, low die swell |
| N660 | Iodine 36 g/kg, DBP 90 | FIBC | General-purpose semi-reinforcing grade for belts, hoses, moulded goods and tyre carcass |
| N774 | Iodine 29 g/kg, DBP 72 | FIBC | Low-structure semi-reinforcing grade for inner liners, extrusions and low-hysteresis compounds |
Iodine adsorption and DBP absorption figures are typical target values; the measured values for your lot are issued on the COA. Grade selection is matched to your compound — tell us the polymer, the product and the property you need and we will recommend the grade.
Carbon black is supplied in FIBC (jumbo bags), palletised and stretch-wrapped for container loading; 25 kg sacks are available for smaller orders and for customers who bag in-house. Bags are marked with grade, lot number and net weight so the material can be traced back to the production batch.
Production runs under an ISO 9001 quality management system, with environmental and occupational health certification alongside it. Every lot is tested before release — iodine adsorption, DBP absorption, tinting strength, heating loss, ash content and sieve residue — and the results are reported on the COA that travels with the shipment.
Samples are available for laboratory evaluation before an order. We also send the COA format in advance so your quality team can confirm the test methods and units they need: GB 3778-2021 is the routine standard, and we confirm the reporting format your market requires at quotation stage.
We will come back with an equivalent, a landed price and a lead time.
