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
