NEN EN 12585 : 1998

Foreword
1 Scope
2 Normative references
3 Definitions
4 Material and working conditions
5 Basic dimensions
6 Mating requirements
7 Essential dimensions for interchangeability
8 Marking
Figures
1 Length of components with plain buttress ends and
    annular zone required for mating plain buttress
    ends with reference to diameters d' and d'
2 Length of components with spherical buttress ends
    with reference to diameter d0
3 Reducer
4 45 degree bend
5 90 degree bend
6 Equal tee
7 Cross
8 Angle valve
Tables
1 Dimensions for compatibility of plain and spherical
    buttress ends
2 Minimum possible deviation from alignment
3 Length and tolerances on length
4 Permissible bow of pipe sections
5 Lengths and tolerances of reducers
6 Lengths and tolerances of 90 degree bends, equal
    tees, crosses and angle valves
7 Lengths and tolerances of 45 degree bends

Defines essential requirements for compatibility and interchangeability of borosilicate glass plant, piping and fittings from DN 15 to DN 1 000.