Quick Answers: Piping, Valves, Flanges & Fittings FAQ
Fast, direct answers to common piping and valve questions.
Pipes
- What Is a Seamless Pipe?
- Seamless vs Welded Pipe
- What Is ERW Pipe?
- ERW vs Seamless Pipe
- What Is LSAW Pipe?
- LSAW vs DSAW vs SSAW
- What Is HFW Pipe?
- What Is EFW Pipe?
- Structural vs Process Pipes
- What Are Piling Pipes?
- Pipe vs Tube
- What Is NPS?
- What Is Pipe Schedule?
- Schedule 40 vs Schedule 80
- What Is ASTM A106?
- What Is ASTM A53?
- ASTM A106 vs A53
- What Is API 5L?
- API 5L PSL1 vs PSL2
- What Is ASTM A333?
- What Is ASTM A335?
- ASTM A335 P11 vs P22
- What Is ASTM A312?
- 304 vs 316 Stainless Pipe
- What Is Duplex Pipe?
- Duplex vs Super Duplex
- What Is ASTM A790?
- Inconel Pipe
- Monel Pipe
- Hastelloy Pipe
- What Is Pipe Coating?
- FBE vs 3LPE Coating
- What Is Pipe Lining?
- Clad vs Lined Pipe
Valves
- What Is a Gate Valve?
- Wedge vs Parallel Slide Gate Valve
- OS&Y vs NRS Gate Valve
- What Is a Globe Valve?
- Globe vs Gate Valve
- What Is a Check Valve?
- Swing Check vs Dual Plate
- What Is a Ball Valve?
- Floating vs Trunnion Ball Valve
- 2-Piece vs 3-Piece Ball Valve
- What Is a Full Bore Ball Valve?
- What Is a Butterfly Valve?
- Butterfly Valve Offset Types
- What Is a Plug Valve?
- What Is a Needle Valve?
- What Is a Pressure Relief Valve?
- Conventional vs Balanced Bellows Relief
- What Is a Choke Valve?
- What Is Valve Trim?
- Valve Trim Numbers
- What Is ASME B16.34?
- API 600 vs API 602
- What Is API 6D?
- What Is Fire Safe Valve?
- Metal Seat vs Soft Seat
- What Is DBB Valve?
Flanges
- What Is a Weld Neck Flange?
- Weld Neck vs Slip-On Flange
- What Is a Blind Flange?
- What Is a Socket Weld Flange?
- What Is a Lap Joint Flange?
- What Is a Threaded Flange?
- What Is an Orifice Flange?
- What Is a Long Weld Neck Flange?
- Raised Face vs Flat Face
- What Is RTJ Flange?
- Flange Class 150 vs 300
- What Is ASME B16.5?
- What Is ASME B16.47?
- Series A vs Series B Flanges
- What Is EN 1092-1?
- ASME vs EN Flanges
- What Is A105 Flange?
- A105 vs A350 LF2
- What Is A182 F316?
- Flange Face Finish (Ra)
- What Is a Spectacle Blind?
- What Is a Flange Isolation Kit?
Fittings
- What Is a Butt Weld Fitting?
- What Is ASME B16.9?
- Long Radius vs Short Radius Elbow
- 45 vs 90 Degree Elbow
- What Is a Pipe Tee?
- What Is a Pipe Reducer?
- What Is a Pipe Cap?
- What Is a Stub End?
- What Is ASME B16.11?
- Socket Weld vs Threaded Fittings
- What Is a Weldolet?
- Weldolet vs Sockolet vs Threadolet
- What Is MSS SP-97?
- What Is ASTM A234?
- A234 WPB vs WPC
- What Is ASTM A403?
- What Is a Fillet Weld?
Gaskets & Bolts
- What Is a Spiral Wound Gasket?
- Spiral Wound Gasket Inner Ring
- What Is an RTJ Gasket?
- Oval vs Octagonal RTJ Gasket
- What Is a Soft Gasket?
- How to Select a Flange Gasket
- What Is ASME B16.20?
- What Is ASME B16.21?
- What Is a Stud Bolt?
- Stud Bolt vs Hex Bolt
- What Is ASTM A193 B7?
- A193 B7 vs B8
- What Is ASTM A194?
- Stud Bolt Length Calculation
- What Is Bolt Torque?
Materials & Standards
- What Is ASTM A216 WCB?
- A216 WCB vs WCC
- What Is ASTM A352 LCB?
- What Is ASTM A217?
- What Is ASTM A351 CF8M?
- CF8 vs CF8M
- What Is ASTM A105?
- What Is ASTM A182?
- A182 F304 vs F316
- What Is A182 F11?
- Cast vs Forged Steel
- What Is NACE MR0175?
- What Is PMI Testing?
- What Is a Mill Test Certificate?
- What Is Hydrostatic Testing?