This standard gives the requirements for two types of heat-shrinkable, not flame retarded, polyolefin sleeving with a nominal shrink ratio of 3:1 and with thick and medium wall. This sleeving has been found suitable at temperatures up to 135 °C. - Type A: Medium wall - internal diameter of upt to 180,0 mm. - Type B: Thick wall - internal diameter of up to 160,0 mm.