Drawing Abbreviations

Written by Jerry Ratzlaff on . Posted in Designer

Abbreviations commonly found in drawings are shown below:

A

  • ACTR - acturator
  • AG - above ground
  • AG - above grade
  • ALLOW - allowance
  • AB - anchor bolt
  • APPROX - approximate
  • AVG - average

B

  • BBE - bevel both ends
  • BBL - barrel
  • BC - begin curve
  • BC - bolt circle
  • BE - bevel end
  • BE - buttweld end
  • BF - blind flange
  • BFG - bevel for weld
  • BFW - boiler feed water
  • BG - below ground
  • BG - below grade
  • BL - blower
  • BLD - blind
  • BLDG - building
  • BLE - bevel one end
  • BLR - boiler
  • BM - bench mark
  • BOC - bottom of concrete
  • BOL - bottom of line
  • BOP - bottom of pipe
  • BOP - blow out preventer
  • BOT - bottom
  • BSE - bevel small end
  • BTFLV - butterfly valve
  • BV - ball valve
  • BW - butt weld or buttweld
  • BWF - butt weld fitting or buttweld fitting

C

  • C-C - center to center
  • CA - corrosion allowance
  • CB - catch basin
  • CB - compact body
  • CCC - cold cut and weld
  • CE - consulting engineer
  • CG - casing gas
  • CHE - chemical engineer
  • CHEM - chemical
  • CI - cast iron
  • CL - centerline
  • CMP - corrugated metal pipe
  • COL - column
  • CP - control panel
  • CPLG - coupling
  • CPVC - chlorinated polyvinyl chloride
  • CR - control room
  • CRSN - corrosion
  • CS - carbon steel
  • CS - cast steel
  • CTR - center
  • CV - check valve
  • CW - continous weld

D

  • DI - ductile iron
  • DIP - ductile iron pipe
  • DR - drain
  • DSAW - double sumberged arc weld
  • DWG - drawing

E

  • EC - end curve
  • EE - electrical engineer
  • EI - electronic interface
  • ENCL - enclosure
  • EOP - end of pipe
  • ELEC - electric
  • ELECDR - electric drive
  • ELECT - electrical
  • ELECTC - electronic control
  • ELEK - electronic
  • ELMCH - electromechanical
  • EMD - electric power drive
  • ER - electrical resistance
  • ERW - electric resistance weld
  • ES - electronic switch
  • EVM - electronic voltmeter
  • EW - each way
  • EW - electric weld
  • EXPF - expander flange

F

  • F-F - face to face
  • FB - full body
  • FBF - full barrel flange
  • FC - fail close
  • FCS - forged carbon steel
  • FDN - foundation
  • FF -  flat face
  • FG - fuel gas
  • FLG - flange
  • FLTR - filter
  • FLTR - filtration
  • FND - foundation
  • FO - fail open
  • FOB - flat on bottom
  • FOE - flange one end
  • FOT - flat on top
  • FPT - female pipe thread
  • FST - forged steel
  • FSTNR - fastener
  • FTG - fitting
  • FW - field weld
  • FW - fillet weld

G

  • GALV - galvanizeed
  • GLV - globe valve
  • GND - ground
  • GR - grade
  • GSKT - gasket
  • GV - gate valve

H

  • HACR - Heating, Air Conditioning and Refrigeration
  • HBF - heavy barrel flange
  • HE - head
  • HE - heat exchanger
  • HEX - heat exchanger
  • HO - hot oil
  • HVAC - Heating, Ventilation and Air Conditioning
  • HVACR - Heating, Ventilation, Air Conditioning and Refrigeration
  • HW - hot water

I

  • INSUL - insulate
  • INSUL - insulation

J

  • JB - junction box

L

  • LACT - lease automatic custody transfer
  • LC - locked closed
  • LDR - ladder
  • LM - list of materials
  • LJF - lap joint flange
  • LO - locked open
  • LO - lube oil
  • LP - low pressure
  • LR - long radius
  • LWNF - long weld neck flange

M

  • MATL - material
  • MB - machine bolt
  • ME - mechanical engineer
  • MECH - mechanical
  • MH - manhole
  • MI - malleable iron
  • MIN - minimum
  • MJ - mechanical joint
  • ML - material list
  • MK - mark
  • MW - manway

N

  • NC - normally closed
  • NO - normally open
  • NOM - normal
  • NTS - not to scale

O

  • OC - on center
  • OD outside diameter
  • OR - outside radius
  • ORFF - orifice flange
  • OUT - outlet

P

  • PBE - plain both ends
  • PD - pressure drain
  • PE - plane end
  • PE - professional engineer
  • PG - produced gas
  • PL - plate
  • PNL - panel
  • PO - produced oil
  • PO - pump out
  • POC - pump of controller
  • POC - point of connection
  • POE - plain one end
  • PRV - pressure relief valve
  • PS - pipe support
  • PT - point
  • PV - plug valve
  • PV - pressure vessel
  • PVC - polyvinyl chloride

R

  • RAD - radius
  • RE - registered engineer
  • RF - raised face
  • REDCF - reducing flange
  • REINF - reinforcing
  • REPAD - reinforcing pad
  • REV - revision
  • RF - raised face
  • RTJ - ring type joint
  • RTJF - ring type joint flange
  • RV - relief valve

S

  • SAF - safety
  • SAW - submerged arc weld
  • SCHED - schedule
  • SCR - screw
  • SCR'D - screwed
  • SE - safety engineer
  • SE - system engineer
  • SECT - section
  • SKT - socket
  • SMLS - seamless
  • SOC - socket
  • SOF - slip-on flange
  • SP - spare
  • SR - short radius
  • SRPT - support
  • SS - stainless steel
  • STD - standard
  • SUCT - suction
  • SW - salt water
  • SW - socket weld
  • SWF - socket weld fitting
  • SWF - socket weld flange
  • SYS - system

T

  • TBE - thread both end
  • THRD - threaded
  • THRDF - threaded flange
  • TK - tank
  • TOC - top of concrete
  • TE - thread end
  • TLE - thread large end
  • TO - threads only
  • TOE - thread on end
  • TOP - top of pipe
  • TOS - top of steel
  • TOS - top of steel
  • TP - tie in point
  • TPI - threads per inch
  • TRHF - threaded flange
  • TSE - thread small end
  • TURB - turbine
  • TW - thermowell

V

  • V - valve
  • V - vessel
  • VAC - vacuum
  • VERT - vertical
  • VSL - vessel

W

  • WLD - welded
  • WLDR - welder
  • WLDS - weldess
  • WNF - weld neck flange
  • WT - weight
  • WW - waste water

X

  • XFMR - transformer