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Dimension drawings
12.28 Flat-Face flange
SITRANS LR250 (PROFIBUS PA)
226
Operating Instructions, 08/2014, A5E32221386-AC
Flat-Face flange markings
Flat Face Flange Identification
Welded Assembly
Identification
Serial No.
Logo
Flange series
Material
Heat
code
Flange
series
Heat code
no.
Series
Nominal size
MMDDYYXXX
25556
2
150
316L/ 1.4404 or
316L/ 1.4435
A1B2C3 25546
A1B2C3
DN80
PN16
Serial number: A unique number allotted to each flange, including the date of manufacture
(MMDDYY) followed by a number from 001 to 999 (indicating the sequential
unit produced).
Flange series: The Siemens Milltronics drawing identification.
Nominal size: The flange size followed by the hole pattern for a particular flange class. For
example:
•
A 2 inch ASME B16.5 150 lb class flange (North America)
•
A DN80 EN 1092-1 PN16 class flange (Europe)
Material:
The basic flange material (AISI or EU material designation). North American
material codes are followed by European ones. For example, material
designation 316L/1.4404.
Heat code:
A flange material batch code identification.