Piping Abbreviations
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 |