MDU Project Catalogue for User Defined Ancillaries
- Last UpdatedJan 13, 2026
- 2 minute read
The catalogue items for the user defined ancillaries have been created in the ranges detailed below within the MDU project. The MDU project contains all the catalogue elements, that means, SCOM, GMSE, PTSE, DTSE and SDTE, where the user will modify the GMSE to suit their requirements. The specification components for ALL the user defined ancillaries are in the /MDS specification in the MDS project, which MUST NOT be modified by users.
|
Standard |
Description |
Current Range |
User Range |
||
|---|---|---|---|---|---|
|
From |
To |
From |
To |
||
|
AT |
Ancillary |
AT01 |
AT115 |
AT500 |
AT700 |
|
LT |
Lug |
LT01 |
LT16 |
LT500 |
LT700 |
|
BT |
U-Bolt |
BT01 |
BT11 |
BT500 |
BT700 |
|
AN |
Anchor |
AN01 |
AN18 |
AN500 |
AN700 |
|
GT |
Guide |
GT01 |
GT50 |
GT500 |
GT700 |
|
ST |
Stop |
ST01 |
ST33 |
ST500 |
ST700 |
The MDU project catalogue hierarchy has been created as above for a size range of 8mm (1/4") to 1200mm (48") in the bore sizes shown below:
|
Metric NB |
Imperial NB |
Actual OD |
PDMS OD |
|---|---|---|---|
|
8 |
1/4 |
13.7 |
14 |
|
15 |
3/8 |
21.3 |
21 |
|
20 |
1/2 |
26.7 |
26 |
|
25 |
1 |
33.4 |
33 |
|
32 |
1.1/4 |
42.2 |
42 |
|
40 |
1.1/2 |
48.3 |
48 |
|
50 |
2 |
60.3 |
61 |
|
65 |
2.1/2 |
73 |
73 |
|
80 |
3 |
88.9 |
89 |
|
100 |
4 |
114.3 |
115 |
|
125 |
5 |
141.3 |
141 |
|
150 |
6 |
168.3 |
169 |
|
200 |
8 |
219.1 |
220 |
|
250 |
10 |
273 |
273 |
|
300 |
12 |
323.8 |
324 |
|
350 |
14 |
355.6 |
358 |
|
400 |
16 |
406.4 |
407 |
|
450 |
18 |
457 |
457 |
|
500 |
20 |
508 |
508 |
|
550 |
22 |
559 |
559 |
|
600 |
24 |
610 |
610 |
|
650 |
26 |
660 |
660 |
|
700 |
28 |
711 |
711 |
|
750 |
30 |
762 |
762 |
|
800 |
32 |
813 |
813 |
|
850 |
34 |
864 |
864 |
|
900 |
36 |
914 |
914 |
|
950 |
38 |
965 |
965 |
|
1000 |
40 |
1016 |
1016 |
|
1050 |
42 |
1067 |
1067 |
|
1100 |
44 |
1118 |
1118 |
|
1150 |
46 |
1168 |
1168 |
|
1200 |
48 |
1219 |
1219 |