Pipe threads are specialized screw threads designed for sealing and connecting pipes in plumbing, gas, hydraulic, and fluid transfer systems. Unlike standard machine screw threads, pipe threads often feature tapered profiles to create a tight seal when engaged. Various pipe thread standards exist worldwide, ensuring compatibility across different industries and regions.
Key Characteristics:
✔ Tapered & Parallel Options: Some threads (e.g., NPT, R) are tapered for sealing, while others (e.g., BSPP, NPS) are parallel.
✔ Thread Profile Variations: Common angles include 55° (BSP) and 60° (NPT & ISO).
✔ Sealing Mechanism: Some rely on interference fit (e.g., NPT), while others require gaskets or sealing compounds (e.g., BSPP).
✔ Common Applications: Plumbing, oil & gas, fluid transfer, air systems, and industrial piping.
🔹 Related Pipe Thread Standards
🔹 BSP – British Standard Pipe Thread
BSP threads are widely used in the UK, Europe, and Asia. They come in two variations: BSPP (parallel) for connections using sealing washers and BSPT (tapered) for self-sealing applications.
BSP – British Standard Pipe Thread🔹 NPT – National Pipe Thread
NPT is the standard pipe thread used in North America, featuring a 60° tapered profile for self-sealing connections in high-pressure plumbing, gas, and hydraulic systems.
🔹 NPS – National Pipe Straight Thread
Unlike NPT, NPS threads are straight (parallel) and do not provide a self-sealing connection. They are typically used where a gasket or O-ring is required to prevent leaks.
NPS – National Pipe Straight Thread🔹 ISO Pipe Threads – G (Parallel) & R (Tapered) Threads
ISO pipe threads follow the G (parallel) and R (tapered) system. G threads require gaskets for sealing, while R threads have a tapered profile for self-sealing connections.
ISO Pipe Threads – G & R📌 This page serves as an overview of Pipe Threads and related standards. Click on the links above to explore each standard in detail.