Pipe plug thread
Thread Content
1. The pipe plugs specified in GBT14383 are of NPT type; what is the standard for pipe plugs with G threads? 2. What is the standard for hard-sealed double-ended internal thread union fittings?
1. Issue G refers to GB/T 7307 \"55° Unsealed Pipe Threads\"; Germany, the UK, and Japan also use G, with corresponding standards. 2. There are many types of problems; mainly, there are three categories in the metric system: 55 degrees, 60 degrees. These three categories further have subcategories, making things rather complicated – it takes quite some study to figure them out. These three main types can all be found in China.