ANSI American National Standards Institute
ASME American Society of Mechanical Engineers
API -American Petroleum Institute
ASTM American Society for Testing Materials
AARH Arithmetical Average Roughness Height
ASB Asbestos
AWWA American Water Works Association
BB Bolted Bonnet
BBE Bevel Both Ends
BC Bolted Cover
BE Bevel Ends
BM Base Metal
BOM Bill of Materials
BW Buttwelding
CA Corrosion Allowance
CE Carbon Equivalent
CMTR Certified Materials Test Report
CL Class
CON Concetric
CS Carbon Steel
CVN Charpy V-notch
DBB Double Block & Bleed
DI Ductile Iron
DIB Double Isolation & Bleed
DFT Dry Film Thickness
DRL Double Random Lenght
DSS Duplex Stainless Steel
D&S Disc and Seat
ECC Eccentric
EFW Electric Fusion Weld
ERW Electric Resistance Weld
FBE Fusion Bonded Epoxy
FF Flat Face
FLEX Flexible
FLG Flange
FT Feet
GALV Galvanized
GO Gear Operated
GR Grade
GRVD Grooved
GS Galvanized Steel
HAZ Heat-Affected Zone
HBW Brinell Hardness, Tungsten Ball Indenter
HEX Hexagonal
HIC Hydrogen-Induced Cracking
HP High Pressure
HRC Rockwell C Hardness
HVY Heavy
HV Vickers Hardness
ID Inside Diameter
IN Inch
IR Inner Ring
LJ Lap Joint
LP Low Pressure
LR Long Radius
LTCS Carbon Steel (Low Temperature)
MSS-SP Manufacturers Standardization Society – Standard of Practice
MAX Maximum
MI Malleable Iron
MIN Minimum
MOD Modified
MP Middle Pressure
MPI Magnetic Practice Inspection
MPD -Maximum Pressure Differential
MT Magnetic ParticleTesting
MTC Mill Test Certificate
N Normalizing
NACE National Association of Corrosion Engineer
NB Norminal Bore
NBR Nitrile Butadient Rubber
NDE Non Destructive Examination
NPS Nominal Pipe Size
NPT National Taper Pipe Thread
OR Outer Ring
OS&Y Outside Screw and Yoke
OD Outside Diameter
PBE Plain Both Ends
PE PLain End
PQR (weld) Procedure Qualification Record
PSL Product Specification Level
PT Penetrant Testing
PWHT Post Weld Heat Treatment
Q Quenching
RB Reducing Bore
RF Rised Face
RJ Ring Joint
RT Radiographic Test
SCH Schedule
SCRD Screwed
SMLS Seamless
SMYS Specified Minimum Yield Strength
SO Slip On
SR Short Radius
SRL Single Random Lenght
SS Stainless Steel
SSC Sulphide Stress Corrosion
STD Standard
SW Socket Weld
T Tempering
TBE Threaded Both Ends
UT Ultrasonic Testing
WB Weld Metal
WN Weld Neck
WPQ Welder Performance Qualification
WPS Weld Procedure Specification
WT Wall Thickness
XS Extra Strong
XXS Double Extra Strong