Very strong, thick, flexible hose intended for extraction and conveying abrasive bulk materials, granulates, gravelling roofs, cleaning industrial, abrasive for sandblasting, silos, tankers for bulk materials etc. compliant with the standard DIN 26057 Type 4 (SMARTFLEX® 2.0). Antistatic and flame-retardant, it ensures a high level of work safety. thick wall and dense, thick spiral reinforcing ensures high resistance to vacuum. smooth inside, non-compressible, not very pliable, but flexible, also in low temperatures. With very good abrasion resistance, also resistant to microbes and hydrolysis. Contains no halogen compounds or plasticisers. Resistant to oils and petrol. The optimal flow direction of the medium is marked with an arrow. The hose wall thickness is measured between the spiral. Other diameters may be available on special order. Anti-electrostatic properties: permanently antistatic (in accordance with ISO 8031 resistance R 9 Ω, in accordance with the German technical regulations TRGS 727 (6.4.2.4) specific resistance R 8 Ωm, in accordance with directive 2014/34/EU (ATEX) it can be used in specified explosion-hazard zones – which should be preceded by a risk analysis). After effective two-sided earthing of the spiral, it can be treated as electrically conductive – in accordance with BGI 739-2 recommendations. Flame-retardant – in accordance with DIN 4102 class B1. Wall thickness measured between the spiral: 2.0 mm (SMARTFLEX® 2.0), 2.5 mm (SMARTFLEX® 2.5). Hose material: transparent polyether-polyurethane. Reinforcement: spiral with wire steel. Operating temperature: od -40°C up to +100°C (momentarily up to +125°C).