District heating pipes - Factory made flexible pipe systems - Joint casing systems

IEC 60893-3-3 A1 Ed. 2.0: Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 3-3: Specifications for individual materials - Requirements for rigid laminated sheets based on melamine resins

IEC 60335-2-34 Ed 5.0: Household and similar electrical appliances - Safety - Part 2-34: Particular requirements for motor-compressors