The hydraulic connections in the market are too confusing. Where are the points of distinction?
ZG is a commonly known as cone, cone thread processing, pipe joint is generally the old GB marked Rc for metric threads to represent the thread pitch, with every inch of the thread number, this is the biggest difference between them, metric thread is 60 degrees equilateral tooth type. 55 inch thread is isosceles tooth type of thread, 60 degrees. Metric units for metric threads; British and American systems. Pipe thread is mainly used for pipe connection, the internal and external threads are closely matched with straight pipe and cone pipe two kinds. Nominal diameter refers to the diameter of the pipe to be connected. Obviously, the diameter of the thread is larger than the nominal diameter. 1/4, 1/2, 1/8 is the nominal diameter of inch inch, inch in inches.
PT is the abbreviation of Thread Pipe, is a 55 degree taper pipe thread sealing, belonging to the Whitworth family, for the European and Commonwealth countries. Commonly used in water and gas pipe industry, taper regulations of 1:16. national standard is available on the GB/T7306-2000 G is 55 degrees non thread sealing pipe thread, a thread labeled Wyeth family. As the representative of G cylinder thread. The national standard is available on the GB/T7307-2001 thread in 1/4, 1/2 in addition, 1/8 marker refers to thread size diameter, unit is inches. Insiders usually used to call thread size, one inch 1/4 inch is equal to 8 points, 2 points, and so on.G seems to be referred to as pipe thread (Guan), 55, division 60 degrees are functional, commonly known as the tube. The thread is machined from a cylindrical surface.
Joint type end straight joint and a straight joint, three joints, elbow, with movable nut joint, hinge joint, plug, etc. transition joints double sleeve joint. The clasp, clasp, nut material used is stainless steel and copper metric, American and English standard thread standards NPT, PT, G is the pipe thread.NPT is National (American) Pipe Thread. The 60 degree taper pipe thread belongs to the American Standard, for North America. The national standard is available on the GB/T12716-1991
