Threaded pipes have an effective seal when transporting liquids, gases, steam, and hydraulic fluid. We are also to thread any length of pipe in diameters ranging from 1/8” to 20”. Tapers available are NPT, BSPT, MIP, UNS, etc.
NPT or NPS (national pipe tapered or straight): Most common in North America
MIP or FIP (male or female iron pipe): Same thread dimensions as NPT
BSP(T) or BSP(S) (British standard pipe tapered or straight): Most common in Europe
Compression: A unique threaded fitting that does not mate with other thread types
UNS (National Unified Special): Some compatible with compression fittings
Galvanized BSPT threaded pipes
Threaded seamless Steel pipe
Oil casing threaded pipe
Threaded Stainless Steel Tube
Threaded pipe fittings
NPT Nominal Size | Actual OD | Hand Tight Turns | Wrench Turns |
1/8 | 0.405" | 4.5 | 2.5 |
1/4 | 0.54" | 4 | 3 |
3/8 | 0.675" | 4.5 | 3 |
1/2 | 0.84" | 4.5 | 3 |
3/4 | 1.05" | 4.5 | 3 |
1 | 1.32" | 4.5 | 3.25 |
1 1/4 | 1.66" | 4.5 | 3.25 |
BSP Nominal Size | Major Diameter (OD) | Minor Diameter (ID) |
1/8 | 0.38" | 0.34 |
1/4 | 0.52" | 0.45 |
3/8 | 0.65" | 0.59 |
1/2 | 0.83" | 0.73 |
3/4 | 1.04" | 0.95 |
1 | 1.30" | 1.19 |
1 1/4 | 1.65" | 1.53 |