TOE (Threaded One End) nipples have external threads on one end only, with the opposite end left plain for welding or special fittings. Black carbon steel construction makes them suitable for gas, oil, and industrial pipeline applications where a dead-end or weld connection is required on one side.
| Material | Carbon Steel |
|---|---|
| Material Grade | A106 Gr.B, A53 Gr.B |
| Thread Type | NPT, BSPT, BSPP |
| Standard | ASTM A733, ASTM A106, ASTM A53 |
| Surface Finish | Black |
| Size Range | 1/8" – 12" |
| Schedule | SCH 40: 1.73mm-9.53mm, SCH 80: 2.41mm-17.48mm |
| Thread Standard | ASME B1.20.1 |
| Pressure Rating | 150 PSI (SCH 40) / 300 PSI (SCH 80) |
A TOE nipple — short for Threaded One End — is a pipe nipple with external threads on one end only.
The opposite end is left with a plain, unthreaded bore, designed for butt welding directly onto pipe or equipment.
This configuration is essential when one connection point requires a threaded fitting while the other side requires a permanent welded joint, eliminating the need for additional weld couplings or adapters.
TOE black steel nipples are commonly specified in oil & gas, petrochemical, and industrial process piping where a combination of threaded and welded connections exists within the same pipeline system.
| Parameter | Details |
|---|---|
| Material | Black Carbon Steel (A53 / A106 Gr.B) |
| Standard | ASTM A733 |
| Thread Type | NPT / BSP / BSPT (one end only) |
| Plain End | Beveled or Square Cut for welding |
| Size Range | 1/4″ – 4″ (DN8 – DN100) |
| Wall Thickness | Schedule 40 / Schedule 80 |
| Surface Finish | Black (Mill Finish / Oil Coated) |
| Length | 2″ – 6″ standard (custom available) |
