Norms

TOLLERANCES
The following tollerances are refering EN1092-1 Standards
(NOT UNI STANDARDS)
Type
from dn
to dn
minus/mm
plus/mm
Outside
Flange
10
dn 125
0
3
neck
11
150
1200
0
4,5
A
1400
2000
0
6
Hole diemeter
10
100
0
0,5
of centre
125
400
0
1
450
600
0
1,5
B1 B2 B3
1-2-4-12
700
2000
0
3
Outside diameter
10
150
2
2
200
500
3
3
D
1-2-4-5-11-13
600
1200
5
5
1300
1800
7
7
1900
2000
10
10
Height of
10
80
1,5
1,5
coupling necks
11 - 13 .
100
250
2
2
H1,H2,H3
300
2000
3
3
Neck coupling
10
50
0,2
0
Diameter
65
150
0,4
0
200
300
0,6
0
N1
11
350
600
0,8
0
700
1200
1
0
Neck coupling
10
50
0
1
Diameter
13
65
150
0
2
N2
200
300
0
4
Thickness of flanges
if worked on
1-2-4-5-11-13
Spessore =/inf 18 mm
1
1
both surfaces
thickness between 19 and 50 mm
1,5
1,5
C1,C2,C3
thickness between 19 and 50 mm
2
2
if worked on
thickness =/inf 18 mm
1,3
2
one surface
1-2-4-5-11-13
thickness between 19 and 50 mm
1,5
4
C1,C2,C3
thickness between 19 and 50 mm
2
7
Surface for
10
250
1
2
gasket
>300
2000
1
3
Height of gasket surface f1
10
2000
1
0
Diameter of bolt circle K
>M10
M24
1
1
with dimension till M24
Diameter of bolt circle K
>M25
1,5
1,5
with dimension over M24 to M45
Wheel base between adjacent holes centres
>M10
M24
1
1
with dimension till M24
Wheel base between adjacent holes centres
>M25
M45
1,5
1,5
with dimension over M24 to M45
Eccentricity of surface of tightness f1
10
100
1
>125
2000
2
Parallelism between tightness surfaces
Worked on
and the support of bolt surfaces
all surfaces
1°
dei bulloni
Worked on
one surface
2°
M A R C A T U R A
1) Name and trade mark of producer
6) Neck thickness if diffrent fro this standard
2)) Number of this standard EN 1092-1
7)Code or quality of material
3) Number and type of flange
8) Heat number
4) Nominal size
9) If there is not space in the little flanges is possible to mark
5) Nominal preassure
only the positions : 1-EN-5-7-8