Common Abbreviations Used in the Plumbing Industry
Mar 25, 2024
- AISI - American Iron and Steel Institute
- 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
- AWWA - American Water Works Association
- ASNT - American Society For Nondestructive Testing
- MSS-SP - Manufacturers Standardization Society - Standard of Practice
- AFC - Approved For Construction
- ASB - Asbestos
- BB - Bolted Bonnet
- BC - Bolted Cover
- BE - Bevel Ends
- BBE - Bevel Both Ends
- BOM - Bill of Materials
- BW - Butt welding

- CA - Corrosion Allowance
- CE - Carbon Equivalent
- CMTR - Certified Materials Test Report
- CL-Class
- CON - Concentric
- CS - Carbon Steel
- CVN - Charpy V-notch
- DBB - Double Block & Bleed
- DI - Ductile Iron
- D&S - Disc and Seat
- DFT - Dry Film Thickness
- DRL - Double Random Length
- DSS - Duplex Stainless Steel
- DWT - Drop-Weight Tear
- ECC - Eccentric
- EFW - Electric Fusion Weld
- ELL - Elbow
- EPC - Engineering Procurement Construction
- ERW - Electric Resistance Weld
- EW - Electric Resistance or Electric Induction Welding Process
- FBE - Fusion Bonded Epoxy
- FCAW - Flux Cored Arc Welding
- FF - Flat Face
- FFW - Field Fit Weld
- FLG - Flange
- FT -Feet

- GALV - Galvanized
- GMAW - Gas Metal Arc Welding
- GTAW - Gas Tungsten Arc Welding
- GO -Gear Operated
- GR - Grade
- GRVD - Grooved
- GS - Galvanized Steel
- HAZ - Heat-affected Zone
- HEX - Hexagonal
- HIC - Hydrogen-induced Cracking
- HP - High Pressure
- HVY - Heavy
- ID - Inside Diameter
- IN - Inch
- IR - Inner Ring
- LJ - Lap Joint
- LP - Low Pressure
- LR - Long Radius
- LTCS - Carbon Steel (Low Temperature)
- MAX - Maximum
- MAWP - Maximum Allowable Working Pressure
- MI - Malleable Iron
- MIG - Metal Inert Gas
- MIN - Minimum
- MOD - Modified
- MP - Middle Pressure
- MPI - Magnetic Practice Inspection
- MT - Magnetic Particle Testing
- MTC - Mill Test Certificate
- MTO - Material Take-Off

- N - Normalizing
- NACE - National Association of Corrosion Engineer
- NB - Nominal 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
- PED - Pressure Equipment Directive
- PMI - Positive Material Identification
- PQR - Procedure Qualification Record
- PSL - Product Specification Level
- PT - Penetrant Testing
- PWHT - Post Weld Heat Treatment
- Q - Quenching
- QAP - Quality Assurance Planning
- RB - Reducing Bore
- RF - Raised Face
- RJ - Ring Joint
- RT - Radiographic Test
- RTJ - Ring Type Joint
- SAW - Sub-merged Arc Welding
- SAWH - Submerged Arc Helical Welding
- SAWL - Submerged Arc Longitudinal Welding
- SCH - Schedule
- SCRD - Screwed
- SMAW - Shielded Metal Arc Welding
- SMLS - Seamless
- SO - Slip On
- SR - Short Radius
- SRL - Single Random Length
- SS - Stainless Steel
- SSC - Sulphide Stress Corrosion
- SST - Stainless STeel
- STD - Standard
- SW - Socket Weld
- SWC - Stepwise Cracking
- T - Tempering
- TIG - Tungsten Inert Gas
- TBE - Threaded Both Ends
- TPI - Third Party Inspection
- UT - Ultrasonic Testing
- WN - Weld Neck
- WPQ - Welder Performance Qualification
- WPS - Welding Procedure Specification
- WT - Wall Thickness
- XS - Extra Strong
- XXS - Double Extra Strong






