pipe threads管螺纹? Pipe thread sizes are described much as bolt sizes are, although the shapes are different. For example, “½–14 NPT” identifies a pipe thread with a nominal outside diameter of ½ inch and 14 threads to the inch, made according to the NPT standard. If “LH” is added, the pipe has a left hand thread. In the United States, the pipe thread standards are: NPT→ American Standard Pipe Taper Thread NPSC→ American Standard Straight Coupling Pipe Thread NPTR→ American Standard Taper Railing Pipe Thread NPSM→ American Standard Straight Mechanical Pipe Thread NPSL→ American Standard Straight Locknut Pipe Thread 查看更多1个回答 . 2人已关注