The internal and external thread joint is one end with internal thread (G) and one end is external thread (G). What is the standard of this joint?
Generally speaking, pipe threads refer to British pipe threads. There are two ways of matching the thread of an inch sealing pipe
G is the British characteristic of non hermetic cylindrical thread.The thread tagging you can refer to "metric, American and English standard thread Standard Handbook (Third Edition)".
The cylindrical internal thread and the taper outer thread form a column / cone fit; the taper internal thread and the taper outer thread form the cone / cone matching.
