Gives the requirements for two types of heat-shrinkable, not flame retarded, polyolefin sleeving with a nominal shrink ratio of 3:1. This sleeving has been found suitable at temperatures up to 135 °C.- Type A: Medium wall - internal diameter of up to 180,0 mm.- Type B: Heavy wall - internal diameter of up to 160,0 mm.These sleevings are normally supplied in black.Sizes or colours other than those specifically listed in this standard may be available as custom items. These items are in compliance with this standard if they comply with the property requirements listed in tables 2, 3, 4, 5, and 6.