Author Archives: jackywang

What is NPT Thread?

NPT stands for National Pipe Taper thread. It’s a tapered thread standard commonly used in North America for pipe and fitting connections in various applications, including: Key features of NPT threads: Tapered threads: The threads have a slight taper, meaning they gradually get narrower towards the end. This taper creates interference when the threads are tightened, […]

What is BSPP thread?

What is BSPP Threads The British Standard Pipe Parallel (BSPP) is a thread used to connect pipes and fittings. It’s a parallel thread, meaning that the sides of the thread are straight, as opposed to tapered like BSPT threads. This makes it easier to assemble and disassemble, but it also means that it’s not as […]

What is the thread according to DIN 3852-2

Here’s a breakdown of the thread specified in DIN 3852-2: Key Points: Thread Type: It primarily designates parallel threads, but also includes a tapered thread variant. Standard Scope: Covers dimensions, types, and designations for stud ends used in fittings, valves, and port plugs. Relationship to ISO Standards: Closely aligns with ISO 1179-1 for parallel threads, but offers additional […]

what are the differences between NPT and NPTF?

NPT and NPTF threads are both commonly used tapered pipe threads in plumbing and piping systems, but they have some key differences: Sealing: NPT (National Pipe Taper): Requires a sealant, like Teflon tape or pipe dope, to create a leakproof connection. The threads themselves don’t provide a perfect seal, so the sealant fills in any gaps and […]