Decrypt socket fittings
Pipe connectors machined by forging round steel or steel ingots are connected by socket welding (SW), where steel pipes are inserted into socket holes for welding. Therefore, it is called "socket fittings". The main production standards are:ASME B16.11,GB/T14383-2008.
Product classification：The varieties of socket fittings include 45 ° elbows, 90 ° elbows, tees, crosses, 45 ° angled tees, double socket pipe clamps, single socket pipe clamps, pipe caps, flexible joints, branch pipe seats, etc. Among them, three-way and four-way can be divided into equal diameter and different diameter; Double socket pipe clamps can also be divided into equal diameter and reduced diameter, and reduced diameter double socket pipe clamps can also be classified as concentric or eccentric.
Mainly suitable for departments and fields such as petrochemicals, pharmaceuticals and healthcare, electricity, aerospace, military industry, fire protection, metallurgy, shipbuilding, gas, nuclear power, and environmental protection that require high pressure and precise dimensions.
1.Socket elbow ：Commonly used standard GB/T14383-93, GB/T14383-2008,ASME B16.11, Petrochemical standard SH3410, Ministry of Chemical Industry standard HG/T21634.
Divided into 45 ° socket elbows and 90 ° socket elbows according to their forms. According to the form of connection, it can be divided into socket elbows and threaded elbows. According to the standard, the specifications of socket elbows include DN6 DN8,DN10,DN15,DN20,DN25,DN32,DN40,DN50,DN65,DN80,DN100. The commonly used ordering specifications are DN15- DN50. If there are any specifications beyond the scope, we can communicate with the customer for drawing design and processing.
Differentiate by pressure level：3000LB,6000LB,9000LB or SCH80,SCH160,XXS.
According to the form of takeover, it can be divided into socket tees and threaded tees. Generally, according to the needs of takeover, it can be divided into same diameter tees and reducing tees. According to standard specifications, there are DN6 DN8,DN10,DN15,DN20,DN25,DN32,DN40,DN50,DN65,DN80,DN100. Divided by pressure level: 3000LB, 6000LB, 9000LB or SCH80, SCH160, XXS
3.Y-shaped three-way four-way It is mainly a type of high-pressure elbow pipe connection accessory that is formed by molding and forging blanks from round steel or steel ingots, and then processed by lathe machine. It is a type of forged socket series pipe fittings. Scope of application: pressure pipes in petroleum, chemical, shipping, fire protection, food, nuclear power, thermal power and other industries.
4.Pipe clamp is a commonly used accessory in industrial pipeline connections. It is a short pipe, also known as an external joint, used to connect two pipes. Forged pipe clamps are formed by heating and forging steel ingots or round bars, and then threading them on the lathe. According to the form of takeover, it can be divided into socket pipe clamps and threaded pipe clamps, and can also be further divided into single socket pipe clamps, double socket pipe clamps, single threaded pipe clamps, and double threaded pipe clamps.
The use of a socket structure in the pipe clamp reduces the cost of pipe joints, making installation, use, and maintenance extremely convenient, while also having extremely high leak prevention capabilities. Due to its convenient use, it is widely used in civil construction, industry, agriculture and other fields.
The main manufacturing standards generally include GB/T14383 ASME B16.11,BS 3799.
5.Pipe cap Other names include head, plug, cap, pipe cover, and blind head. There are two types of connections: socket and threaded. The socket cap is welded to the pipe end, and the threaded cap is installed on the external thread of the pipe end to cover the pipe fitting. Forged pipe caps are divided into socket welded pipe caps and threaded pipe caps according to their connection forms, both of which are used to seal pipelines and have the same function as plugs. The production standard is GB/T14383 ASME B16.11.
6.Pipe plug used at the end of the pipeline to prevent leakage and provide a sealing effect. There are hexagonal and quadrilateral types, with NPT threads being the most common.
7.Hex Head Bushing also known as hexagonal head internal and external threaded joint.It is generally processed by cutting and forging hexagonal bars, and is a commonly used accessory for reducing threaded pipes. It plays an irreplaceable role in pipe connections. Due to its hexagonal shape, it is easy to reinforce and tighten, and there are many types of threads used for connection, with the most common being NPT RC thread connection.
8.Shrinkage tube, also known as reducing short circuit, can be concentric or eccentric. Concentric Swaged Nipple Eccentric Swaged Nipple.
Generally used in pipe engineering, a fitting for connecting pipes of different diameters. There is a difference in the connection form between butt welded threaded connections. Mainly suitable for departments and fields such as petrochemicals, pharmaceuticals and healthcare, electricity, aerospace, military, firefighting, metallurgy, shipbuilding, gas, nuclear power, and environmental protection that require high pressure and precise dimensions Standard American MSS SP-95 Petrochemical Standard SH/T3419.
9.Outlet also known as branch seat, saddle seat, saddle shaped pipe joint. There are three types of connections: butt welding, socket welding, and threaded connection.
Mainly used for reinforcing branch pipe connections, it replaces the use of branch pipe connection types such as reducing tees, reinforcing plates, and strengthening pipe sections. It has outstanding advantages such as safety and reliability, cost reduction, simple construction, improved medium flow channels, series standardization, and convenient design selection. It is increasingly widely used in high-pressure, high-temperature, large-diameter, and thick walled pipelines, replacing traditional branch pipe connection methods.
The main body of the branch pipe platform is made of high-quality forgings, using the same materials as the pipeline, including carbon steel, alloy steel, stainless steel, etc. The branch pipe seat is welded to the main pipe and connected to branch pipes or other pipes (such as short pipes, plugs, etc.), instruments, and valves. The commonly used manufacturing standards for branch stations include MSS SP-97 and GB/T19326.
10.Union also known as union or union, it is a commonly used pipe connector that can be easily installed and disassembled. It mainly consists of three parts: nut, cloud head, and flat joint.
Pipe connectors machined by forging round steel or steel ingots. Its connection forms include socket welding and threaded connection. Socket welding is the process of inserting steel pipes into socket holes for welding, hence it is called "socket joint". Threaded connection is the process of screwing steel pipes into screw holes for connection, and there are also external threaded connection forms. Therefore, it is called a "threaded joint" and the main manufacturing standard is MSS SP-83.
Flexible joints are widely used for connecting pipes of different diameters, as well as for connecting instruments, valves, and pipelines. Mainly suitable for departments and fields such as petrochemicals, pharmaceuticals and healthcare, electricity, aerospace, military industry, fire protection, metallurgy, shipbuilding, gas, nuclear power, and environmental protection that require high pressure and precise dimensions.
11.Threaded Short Nipple. Threaded short section is a commonly used accessory in industrial pipeline connections, divided into single threaded short section (single thread) and double threaded short section (double thread).
The threads comply with the American standard ASME B16.11 and the national standard GB/T14626, and NPT and RC threads are commonly used. Production drawings refer to: Single head thread short section - drawing number HGS04-04-01-1; Double headed thread short section - drawing number HGS04-04-02-1.
