Polyethylene composition for pipes with improved flexibility pressure.

Polyethylene composition comprising a base resin comprising: (a) a fraction (A) homopolymer or copolymer of ethylene with an MFR 2 of 10 to 300 g / 10 min, determined according to ISO 1133 and (b) a fraction ( B) homo- or copolymer of ethylene, wherein: (i) fraction (a) has an average molecular weight than fraction (B); (Ii) the base resin has a density of 940-947 kg / m3, determined according to ISO 1183-2; (Iii) the polyethylene composition has a CMF5 0.1 to 0.5 g / 10 min, determined according to ISO 1133; (Iv) the polyethylene composition has an SHI (