Seamless Threaded Pipe Fittings

Seamless threaded pipe fittings are made by processing seamless pipes and have threads for easy connection.There are a variety of types,which can be classified according to different connection methods,shapes,and uses.The following is a detailed introduction:

Classified by shape and purpose

Bend

Function:Used to change the direction of pipelines,enabling them to bypass obstacles or achieve connections in different directions.

Common angles:There are multiple angles to choose from,including 45°,90°,and 180°.The 45°elbow is suitable for situations that require a smaller angle of turning;90°elbows are the most common and are used for right angle turning;The 180°elbow is used for reversing the pipeline.

Application scenario:In the building's water supply and drainage system,a 90°elbow can turn the water pipe at the corner of the wall;In industrial pipeline systems,elbows with different angles can be selected according to the needs of the process flow and pipeline layout.

Tee(tee)

Function:To achieve branching connections of pipelines,it can distribute fluid from one pipeline to two or more pipelines,or collect fluid from multiple pipelines into one pipeline.

Type:divided into equal diameter tees and reducing tees.The three interfaces of the equal diameter tee have the same diameter;The main pipe diameter of the reducing tee is different from the branch pipe diameter,and is used to connect pipes of different diameters.

Application scenario:In chemical production,equal diameter tees can be used to simultaneously transport one chemical raw material to multiple reaction equipment;The three principles of reducing diameter are commonly used to introduce smaller diameter branch pipes from the main pipe to meet the needs of different flow rates.

Cross

Function:It has four interfaces for implementing cross shaped branch connections of pipelines,suitable for complex pipeline layouts,and can distribute or collect fluids in multiple directions.

Application scenario:In the ventilation duct system or complex water supply and drainage pipe network of some large industrial plants,four-way fittings can be used to construct multi-directional pipe connections,achieving uniform distribution of air or water flow.

Directly Coupled

Function:Used to connect two pipes of the same diameter,allowing the pipes to be extended.

Type:There are different types of connectors,including regular connectors and locking connectors.The locking head can be locked through a special structure after connection to prevent the pipeline from loosening.

Application scenario:In long-distance water and gas pipeline laying,direct heads are often used to connect multiple pipelines together to meet the length requirements of the pipelines.

Reducing head(reducer)

Function:Connect two pipes of different diameters to achieve transition and change in diameter,in order to adapt to different flow rates,pressures,or equipment interface requirements.

Type:divided into concentric reducing direct head and eccentric reducing direct head.The central axis of the concentric reducing direct head coincides,suitable for general pipeline connections;The central axis of the eccentric reducing head does not coincide,and it is commonly used to prevent liquid accumulation in pipelines.

Application scenario:In the connection of water pump inlet and outlet pipelines,when the diameter of the water pump interface is different from the diameter of the pipeline,a reducing direct head can be used for connection;In drainage pipeline systems,eccentric reducers can be used to prevent water accumulation at the bottom of the pipeline.

Cap(cap)

Function:Installed at the end of the pipeline,it serves to seal the pipeline and prevent fluid leakage or external impurities from entering.

Application scenario:Pipe caps will be installed for protection at the end of temporarily suspended pipelines,during pipeline testing or maintenance;In pipeline systems in industries such as food and pharmaceuticals,pipe caps can maintain cleanliness and hygiene inside the pipes.

Union(Union)

Function:Composed of a nut,cloud head,and flat joint,it is used for easy connection and disassembly of pipelines without the need for welding or other complex connection methods.The use of flexible joints can improve work efficiency in pipeline areas that require frequent disassembly and maintenance.

Application scenarios:Flexible joints are often used at the connection points between devices and pipelines,as well as between instruments and pipelines,to facilitate the installation,debugging,and maintenance of equipment.

Classification based on the type of connecting thread

British threaded fittings

Features:The thread size is measured in imperial units,and the tooth profile angle is usually 55°.British threaded fittings are widely used in some traditional industrial countries and regions,especially in old and imported equipment in industries such as petroleum and chemical.

Application scenario:In pipeline systems that are compatible with imported equipment from abroad,or in some early industrial projects,British threaded fittings may be used.

Metric threaded fittings

Features:The thread size is measured in metric units,and the tooth profile angle is generally 60°.Metric threaded fittings are a standard widely used in China and most countries,with the advantages of strong universality and good interchangeability.

Application scenarios:Metric threaded fittings are widely used in various industrial and civil pipeline systems in China,such as building water supply and drainage,HVAC,mechanical equipment,and other fields.