Moulded articles

A polyethylene composition comprising

• (A) from 65 to 93 wt %, based on the total weight of the polyethylene composition, of a multimodal high density polyethylene having a density of from 945 to 970 kg/m3, determined according to ISO 1183, and a melt flow rate MFR2 of 0.1 to 1.5 g/10 min, determined according to ISO 1133 at a temperature of 190° C. and a load of 2.16 kg;
• wherein the multimodal high density polyethylene (A) comprises at least two polyethylene fractions (A-1) and (A-2)
• (A-1) from 40 to 60 wt %, based on the total weight of the multimodal high density polyethylene (A), of a first polyethylene fraction having a density of from 955 to 980 kg/m3, determined according to ISO 1183, and a melt flow rate MFR2 of 50 to 600 g/10 min, determined according to ISO 1133 at a temperature of 190° C. and a load of 2.16 kg;
• and
• (A-2) from 40 to 60 wt %, based on the total weight of the multimodal high density polyethylene (A), of second polyethylene fraction having a density of from 943 to 970 kg/m3, determined according to ISO 1183, and a melt flow rate MFR2 of 0.00001 to 1.0 g/10 min, determined according to ISO 1133 at a temperature of 190° C. and a load of 2.16 kg;
• (B) from 7 to 35 wt %, based on the total weight of the polyethylene composition, of a high density polyethylene having a density of from 955 to 980 kg/m3, determined according to ISO 1183, and a melt flow rate MFR2 of from 15 to 60 g/10 min, determined according to ISO 1133 at a temperature of 190° C. and a load of 2.16 kg,
• wherein the polyethylene composition has a z average molecular weight Mz of from 610000 to 670000 g/mol.