Siemens COMOS, Operating Manual

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3.3.3 Standard tables for nominal diameters
The standard tables for nominal diameters are kept separate from one another for each system
of standards. You find the following standard tables for nominal diameters by default:
● "DIN/EN" system of standards:
"Standard tables > Y10 > M20 > Y30 > A10 > 1 > A50 Nominal Sizes
● "ANSI/ASME" system of standards:
"Standard tables > Y10 > M20 > Y30 > A10 > 10 > A50 Nominal Sizes
Structure
The standard table for nominal diameters is structured in accordance with the following rules:
● New nominal diameters are appended to the end of the list.
● Nominal diameters are sorted according to their entry in the "Value 1" column. The entry
in the "Value 1" column is formed according to an algorithm stored in COMOS. Do not
change these entries manually.
● Do not delete or move existing nominal diameters.
3.4 Managing the "standard geometry tables" standard catalog
3.4.1 Introduction in the "standard geometry tables" standard catalog
Definition
The dimensions of pipe parts can be obtained from the "standard geometry tables".
"Standard geometry tables" standard catalog in the database
The database is supplied with a catalog in which geometry standards based on DIN/EN and
ANSI/ASME have been set up.
You can determine manufacturer-specific geometry standards, add missing DIN or ANSI
standards, or extend existing standards.
Note
Observing the configuration rules
The standard geometry tables are managed by Siemens AG.
Only make additions to the tables if you know the configuration very well. Not managing the
standard catalog correctly can lead to data inconsistencies in the database and take up
significant additional time and effort.
Preparing for creation and maintenance of pipe specs
3.4 Managing the "standard geometry tables" standard catalog
PipeSpec Designer
Operating Manual, 09/2014, A5E32076948-AA
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