Every engineering field has its list of abbreviations to help convey information quickly and easily. Here is such list of abbreviations related to piping engineering. Hope it will be useful to new entrants as well as professionals alike. Piping Abbreviations Sr. Abbreviation Description 1 ANSI American National Standards Institute Inc 2 API American Petrolium Institute […]
Every engineering field has its list of abbreviations to help convey information quickly and easily. Here is such list of abbreviations related to piping engineering. Hope it will be useful to new entrants as well as professionals alike.
Piping Abbreviations
Sr.
Abbreviation
Description
1
ANSI
American National Standards Institute Inc
2
API
American Petrolium Institute
3
ASA
American Standards Association
4
Asb
Asbestos (Gaskets)
5
ASME
The American Society of Mechanical Engineers
6
ASTM
The American Society for Testing and Materials
7
AWWA
American Water Works Association
8
BBE
Bevel both ends
9
Bbl
Barrel
10
Bdr
Bleed ring
11
BE
Beveled end
12
Bfy
Butterfy (valve)
13
Bld
Blind (flange)
14
Bld
Spectacle blind (blate between flanges)
15
BLE
Bevel large end
16
Blk
Black (pipe)
17
BOE
Bevel one end
18
BOM
Bill of materials
19
BOP
Bottom of pipe
20
Brz
Bronze (valve)
21
BSE
Bevel small end
22
BW
Buttweld
Sr.
Abbreviation
Description
23
Chk
Check (valve)
24
CI
Cast iron
25
Cm
Centimeter
26
Conc
Concentric
27
Cpl
Coupling
28
CS
Cast steel, carbon steel, cap screw
29
CSC
Car seal closed
30
Csg
Casing
31
CSO
Car seal open
32
Csw
Concentric swage
33
Cu
Cubic
34
CW
Chain wheel
35
CWO
Chain wheel operator
36
CWP
Cold water pressure
37
D&T
Drill and tap
38
D&W
Doped and wrapped (pipe)
39
DES
Double extra strong
40
DI
Ductile iron
41
Dia
Diameter
42
Dim
Dimension
43
Ditto
Do not use this term
44
DSAW
Double sub-merged arc welded (pipe)
45
Dwg #
Drawing number
Sr.
Abbreviation
Description
46
Ea.
Each
47
Ecc
Eccentric
48
El
Elevation (on drawing)
49
Elec
Electrical
50
Ell
Elbow
51
Eol
Elbolet
52
ERW
Electric resistance weld (pipe)
53
Esw
Eccentric swage
54
EUE
External upset ends
55
Ex.hvy
Extra heavy
56
Ex.stg
Extra strong
57
Exp jt
Expansion joint
58
F&D
Faced and drilled (flanged)
59
F/F
Face of flange
60
FAB
Fabricate/fabricator
61
FAS
Free along side
62
FE
Flanged ends / flow element
63
Fem
Female (ends)
64
FF
Flat/full face
65
Fig
Figure (number)
66
Flex
Flexitallic (gasket brand name)
67
Flg.
Flange
68
Flgd
Flanged ends / flow element
69
FOB
Free on board
70
FS
Forged steel
71
FSD
Flat side down
72
FSU
Flat side up
73
Ft
Feet/foot
74
FW
Field weld/fire water
Sr.
Abbreviation
Description
75
Gal
Gallon
76
Galv
Galvanised
77
GG
Gauge glass
78
GJ
Ground joint (union)
79
Glb
Globe (valve)
80
GR
Grade
81
Gsk
Gasket
82
HC
Hose coupling
83
Hdr
Header
84
Hex
Size-sided head, bolt, plug etc.
85
HN
Heat number
86
Hvy
Heavy
87
IBBM
Iron body bronze mounted(valve)
88
ID
Inside diamter
89
ID
Inside diamter
90
Insi
Insulation
91
IPS
Iron pipe size
92
IS&Y
Inside screw & yoke (valve)
93
ISO
Isometric (drawing)
94
IUE
Internal upset ends
95
Jkscr
Jack screw
96
Jt (s)
Jt. (joints)
97
JW
Jacket water
Sr.
Abbreviation
Description
98
Lati
Lateral
99
Lb (s). #
Pound (s) # symbol for pounds
100
Lg
Length, long, level gauge
101
Lin Ft
Liner feet
102
LJ
Lap joint (flange)
103
LLC
Liquid level controller
104
LOL
Latrolet
105
LP
Line pipe
106
LR
Long radius
107
M
Meter/one thousand
108
M&F
Male and female (ends)
109
MAT’L
Materials
110
Max
Maximum (a warehouse stocking level)
111
MFD
Mechanical flow diagram
112
Mfg
Manufacturer
113
MI
Malleable iron
114
Min
Minimum (a warehouse stocking level)
115
Misc
Miscellaneous (schedules of pipe)
116
Mk
Mark (spool piece)
117
MM
Millimeter
118
MRR
Materials receiving report
119
MSS
Manufacturers Standards Society of the Valve and Fittings Industry
120
MTO
Material take-off (from drawings)
121
NC
Normally closed
122
Nip
Nipple (pipe)
123
No or #
Number
124
NPS
Nominal pipe size
125
NPT
Nominal pipe thread
126
NU
Non-upset (ends)
Sr.
Abbreviation
Description
127
OD
Outside diamter
128
Orf
Orifice
129
OS&D
Over short and damage (report)
130
OS&Y
Outside screw and yoke (valve)
131
Oz
Ounce
132
P&ID
Piping and instrumentation diagram
133
PBE
Plain both ends
134
Pc
Piece (mark for spool pieces)
135
Pdl
Paddle (a blind plate between flanges)
136
PE
Plain ends
137
PI
Pressure indicator (valves & gauge assembly)
138
PLE
Plain large end
139
Plt
Plat (steel)
140
PO #
Purchase order or number
141
POE
Plain one end
142
Pr
Pair of items
143
Press
Pressure
144
PS
Pipe support
145
PSE
Plain small end
146
psi
Pounds per square inch
147
psig
Pounts-force suqre inch, guage
148
PSV
Pressure safety (relief) valve
149
PVC
Poly vinyl chloride
150
PVF
Pipe, valves and fittings
Sr.
Abbreviation
Description
151
PW
Potable wter
152
Qty
Quantity
153
Rad
Radius
154
Rdcr
Reducer
155
Rec’d
Received (materials)
156
Red
Reducer
157
Reqn
Requisition
158
REV
Revision
159
RF
Raised face
160
RPM
Revolutions per minute
161
RR
Red rubber (gasket type)
162
RS
Rising stem (valve)
163
RTE
Reducing tee
164
Rtg
Rating
165
RTJ
Ring type joint (flange facing)
166
S/40
Schedule 40 (of pipe or fittings)
167
SC
Sample connecitons
168
Sch
Schedule (of pipe or fittings)
169
Scrd
Screwed (ends)
170
Sdl
Saddle (pipe)
171
SE
Screwed ends
172
Skt Bld
Skillet blind (plate between flanges)
173
Smls
Seamless spec
174
SO
Slip-on (flange)
175
SOL
Sockolet
176
SPEC
Specification
177
Spl Sht
Spool sheet (from isometric drawing)
178
Sq
Square feet, yards etc.
179
SR
Short radius, stress relieve
180
SRL
Short radius ell
181
SS
Stainless steel
182
Std
Standard (a pipe or fitting schedule)
183
STD
Standard (a pipe or fitting schedule)
184
Stl
Steel
185
Stm
Steam
186
Sub
Short length of pipe or rod
187
SW
Socket weld
188
Swg
Swage nipple
189
SWP
Safe working pressure
Sr.
Abbreviation
Description
190
T&C
Threaded and coupled
191
T&G
Tongue and groove (flange facing)
192
Tbg
Tubing
193
Thk
Thick
194
Thr’d
Threaded
195
TI
Temperature indicator
196
TLE
Thread large end
197
TOE
Thread one end
198
TOL
Threadolet
199
TSE
Thread small end
200
TW
Thermometer well
201
Typ
Typical (repeat the same item)
202
Un
Union
203
VA
Valve
204
Vac
Vacuum
205
Vol
Volume
206
Wd
Width/wide
207
WE
Weld end
208
WI
Wrought iron
209
WN
Weld neck (flange)
210
WOL
Weldolet
211
WP
Working pressure
212
WT
Wall thickness/weight
213
XR
X-ray (at pipe welds)
214
XS
Extra strong
215
XXS
Double extra strong
216
Yd
Yard
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