2022年4月18日 · The main difference between NPT and BSP threads is that the thread angle in NPT threads is 60 degrees while that of BSP pipes is 55 degrees. NPT threads are also pointed at the crests and roots whereas BSP’s are rounded.

1）NPT是National (American)Pipe Thread的缩写，属于 美国标准 的60度椎管螺纹，用于 北美地区，国标查阅《GB/T 12716-2011 60°密封管螺纹》。 2）PT（BSPT）是Pipe Thread 的缩写，是55度密封圆锥管螺纹，属于 惠氏 螺纹家族，多用于欧洲及 英联邦国家，常用于水及煤气管行业， 锥度 1:16，国标查阅《GB/T 7306.1-2000 55°密封管螺纹 第1部分：圆柱内螺纹与圆锥外螺纹》与《GB/T 7306.2-2000 55°密封管螺纹 第2部分：圆锥内螺纹与圆锥外螺纹》。 国内叫法为ZG. …

BSP and NPT threads differ in geographical usage, thread forms, angles, and pitches. While NPT threads are prevalent in North America, BSP threads are the standard across other regions. Their incompatibility emphasizes the importance of precise selection, as mismatches can lead to leakage or failure.

2024年6月4日 · npt 尺寸由标称管道尺寸 (nps) 确定，是指管道或配件的近似内径。然而，与 bsp 不同，npt 螺纹螺距（螺纹之间的距离）定义不同，导致在不使用合适的适配器的情况下 bsp 和 npt 螺纹之间不兼容。 主要区别：

BSPT (British Standard Pipe Taper) is similar to NPT but there are a few important differences. The angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees instead of 60 degrees as it is for NPT.

2024年9月22日 · npt、pt、bsp、g螺纹的区别是什么？1. npt螺纹是美国标准的60度锥管螺纹，主要应用于北美地区。中国的国家标准可以参考gb/t12716-1991。2. pt螺纹是55度密封圆锥管螺纹，属于惠氏螺纹家族，在欧洲和英联邦国家使

2024年8月20日 · BSP and NPT threads are incompatible, as they have different numbers of threads per inch and thread angles. Attempting to join an NPT male to a BSPP or BSPT female will cause the joint to get stuck within a few turns. As a result, a spiral leak will occur because of the difference in thread shape.

2023年2月22日 · npt 和 bsp 螺纹是管道行业常用的螺纹类型。 它们旨在建立牢固、密封的连接，并且易于安装。 两者都提供可靠的性能，并且有多种尺寸和样式可供选择。

Pipe threads are governed by two sets of standards: National Pipe Thread (NPT) and British Standard Pipe (BSP). These standards stipulate the types of screw threads used to connect and seal pipe fittings together. From the late 1700s to the mid-1800s, the Industrial Revolution was a catalyst for establishing standards across industries.

There are two types of distinguished BSP pipe threads: BSPT: British Standard Pipe Taper thread (BSPT), whose diameter increases or decreases along the length of the thread; and; BSPP (British Standard Pipe Parallel): Unlike tapered threads, BSPP threads are parallel, ensuring a consistent diameter along the thread length. They are often used ...