Hydraulic terminology, is a hydraulic system connected to the pipeline or the pipeline installed on the hydraulic components of the parts, this is a fluid path can be assembled and removed from the joint.

Mainly include: welding type, card sleeve type, buckle type and flaring type.

End through joint, through joint, three - way joint, elbow, with live nut joint, hinge joint, plug, transition joint and other double - clamp joint composition: front clip ring, back clip ring, nut

Materials commonly used are stainless steel and carbon steel metric, American and British screw threads

NPT, PT and G are all pipe threads. NPT stands for National (American) Pipe Thread, a U.S. standard 60 degree taper Pipe Thread used in North America. GB/ t12716-1991pt is the abbreviation of Pipe Thread. It is a 55 degree sealed taper Pipe Thread. It belongs to wyeth Thread family. Often used in water and gas pipe industry, taper provisions for 1:16. National standard can consult GB/ t7306-2000

G is 55 degree non - threaded seal pipe thread, wyeth thread family. Mark G for cylindrical thread. National standard can consult GB/ t7307-200 in additional thread 1/4, 1/2, 1/8 mark is to point to the diameter of thread size, the unit is inch. People in the industry usually use points for thread size, 8 points for an inch, 2 points for a quarter inch, and so on. G is the general name of the pipe thread (Guan), 55,60 degrees of division belongs to the functional, commonly known as the pipe circle. Namely thread by a cylinder surface processing and become. Mid-december, commonly known as the tube cone, the thread surface is processed by a cone, the general water connection is such, old domestic thread standard labeling for Rc thread for R metric thread pitch, the inch thread used to represent the number of thread within per inch, which is the biggest difference between them and metric thread is 60 degrees equilateral tooth type, inch thread tooth type is isosceles 55 degrees, American thread 60 degrees. Metric threads in metric units, American English threads in British units. Pipe thread is mainly used for pipe connection, and its internal and external threads are closely matched. There are two kinds of straight pipe and taper pipe. Nominal diameter refers to the pipe diameter connected, obviously the thread diameter is larger than nominal diameter. 1/4, 1/2, 1/8 is the nominal diameter of the inch thread.