Connection Method of Seamless Pipe and Welded Pipe

There are many ways to connect steel pipes, and several commonly used methods are now listed:

Different connection methods have different application fields due to their different production principles, but in general they all have one thing in common that is easy to install, firm and reliable.

Here is a brief introduction to several common connection methods:

1. Compression type: Insert the piping into the nozzle of the pipe fitting, fasten it with a nut, and compress the sleeve of the nozzle through the sealing ring with a spiral force to play a sealing role and complete the connection of the piping.
2. Welding type: the end of the piping is grooved, and the piping is welded in a ring by manual or automatic welding.
3. Flange type: the flange and the piping are ring-shaped argon arc welding, fastened with quick clamps or bolts, so that the gasket between the flanges can seal and complete the piping connection.
4. Pressing type: Insert the pipe into the pipe fitting and press the pipe wall into a hexagon with a special installation tool, and the inner sealing ring is also transformed into a hexagon
5. Taper thread type: the external thread and the piping are ring-shaped argon arc welding, and the internal threaded pipe fittings are connected by the taper thread to complete the piping connection.

How to connect between two seamless steel pipes?

There are many ways to connect two seamless steel pipes, but in general there are two major ways,

one is detachable connection, and the other is non-detachable connection. The detachable connection

means that after installation, Can be removed. Non-detachable connection is to connect two seamless

steel pipes together forever.

The most commonly used method of non-detachable connection is welding. Two seamless steel pipes are

welded together by various welding methods. This method is less expensive, but requires higher

working environment, such as when the pipe is too long or the diameter is too large., It is not

convenient to work after welding together.

There are three most commonly used detachable connections:

1. Flange connection (easy assembly and disassembly, strong versatility).
2. Live joint connection (live joint is divided into threaded type and welded type).
3. Special pipe joint connection (with internal thread, external thread, etc.).

Users can choose a specific connection method according to their own situation, no matter which

connection method is used, it must be firm and reliable.

Tips: Astm A53/sa53 seamless and welded steel pipe is a general, all-purpose pipe used in generator plants, refineries, compressor stations, natural gas transmission, and steam conduction.

A53 Grade B Seamless is our most polar product under this specification and A53 pipe is commonly dual certified to A106 B Seamless pipe.

ASTM A53 Grade B is the material under the American steel pipe standard, API 5L Gr.B is also the American standard material, A53 Gr.b Erw refers to the electric resistance welded steel pipe of A53 GR.B; API 5L GR.B Welded refers to the material Welded steel pipe of API 5L GR.B.

Steel pipe industry practitioners at Permanent Steel Manufacturing Co.,Ltd, knowledge enthusiasts