Joints Pipe

In hydraulic system, the hydraulic system is a part which is connected with the pipe line or the hydraulic component, which is a general name of the connecting piece that can be installed and disassembled in the fluid passage.

Mainly include: welding, sleeve type and flared type

Attachment attachment

Including: nuts, card sets, flaring core, expanding sleeve, flared nut

Joint type

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End through joint, straight connection, three links, elbow, with live nut joint, hinge joint, plug, transition joints, etc.

The composition of the joint of the double card sleeve: the front clamping ring, the back clamping ring and the nut.

Material is commonly used in stainless steel and carbon steel

Metric, American and British thread standard

NPT, PT, G are all pipe threads.

NPT is the abbreviation of Pipe (American) Thread National, which belongs to the American Standard 60 degree taper pipe thread, which is used in North America. The national standard can refer to GB/T12716-1991

PT is the abbreviation of pipe thread and is 55 degrees sealed tapered pipe threads, belonging to the family of Whitworth threads, for Europe and the Commonwealth of nations. In water and gas pipe industry, prescribe tapers for 1:16. National standards can be referred to GB/T7306-2000

G is a 55 - degree non - threaded sealing pipe thread, belonging to the family of the Hui family. The mark is G on behalf of the cylinder thread. The national standard can refer to GB/T7307-2001

Another thread in the 1/2, 1/4, 1/8 mark refers to the diameter of the thread size, the unit is in.

Insiders are usually used to call thread size, one inch 1/4 inch is equal to 8 points, 2 points, and so on.

G is a general designation (Guan) of the pipe thread, 55, 60 degrees of division are functional, commonly known as the tube round. That the thread is processed by a cylindrical surface.

ZG, commonly known as the cone, which is the thread by a conical surface processing and, general pipe joints are such, the threads of the old standard annotation for the RC thread R

Metric thread pitch, with American and British thread per inch thread number said that this is their biggest difference.

Metric thread is 60 degrees equilateral tooth type, thread is isosceles tooth type thread 55 degrees, 60 degrees.

Metric thread metric unit, and thread with imperial units.

Pipe thread is mainly used for the connection of the pipe, and its internal and external thread with tight, straight pipe and cone tube two. Nominal diameter is refers to the pipe diameter, the diameter of the large diameter is larger than the nominal diameter.

1/4, 1/2, 1/8 is the nominal diameter of the thread, the unit is in.

The pipe joint is a connecting tool between the pipe and the pipe, and the connecting point between the element and the pipe can be disassembled and assembled. In the pipe fittings as an indispensable important role, it is one of the two main components of the hydraulic pipe. The pipe joint is used for the straight line connection of the instrument, and the connection form is connected with the socket welding or the screw thread connection. Mainly used for small diameter of the low pressure pipeline, used to always install the parts, or as the use of threaded pipe fittings for the final adjustment of the use of. Related products quickly and easily and were included, structure should be used in metal surface contact sealing structure, gasket sealing structure is often used to water, oil, air and other general pipeline transportation, the manufacturing malleable cast iron materials. In addition, the use of demand and price, etc. are also used to consider factors.

There are various types of pipe joints, commonly used pipe joints can generally be divided into two kinds of hard pipe joints and hose connectors. If in accordance with pipe joints and pipe connection points, hardware fittings have flared, card sleeve type and welding of three, hose connectors is mainly withhold hose joint.

There are also different ways of connecting pipe and pipe joint in hydraulic system. Taper thread with their vertebral screw and sealing operations are conducted using PTFE and other substance, which is used mainly in the middle and low pressure hydraulic system. Fine thread sealing effect is very good. It is frequently used in the high-pressure system, but it requires using a combined gasket or O-ring in the end of the enclosed work, and sometimes use copper washer, it is more suitable for the connecting tube with a thick wall pipe and its components to a joint body, a nozzle and a nut. When in use, the connector body is embedded in the target, and the front surface is matched with the gasket to seal the end face, and a rubber seal is used for the connection between the connector body and the nozzle.

The pipe joint is a detachable connection element, it in addition to meet the requirements of normal stable connection, sealing strong, reasonable size, small pressure loss, process performance good, must also be to meet the requirements of convenient for assembling and disassembling. Therefore, do not look down upon those small pipe joints, because only the existence of it can support the existence of the entire hydraulic system.

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