Black Seamless Nipple

The main connection methods for Black Seamless Nipples are as follows:

Threaded connection

Principle:Process matching internal and external threads at the ends of Black Seamless Nipples and pipelines,and tighten them together by rotation to achieve sealing and mechanical connection.

Features:Easy installation and disassembly,no need for special welding equipment,suitable for small-diameter pipelines and situations that require frequent disassembly and maintenance.However,the sealing performance of threaded connections is relatively limited.In environments with high pressure,high temperature,or vibration,it may be necessary to add sealing materials such as sealing tape,sealant,etc.to ensure good sealing performance.

Application scenarios:Commonly used for water supply and drainage systems,low-pressure gas pipelines,and connecting pipelines for some instruments and equipment in households and small commercial buildings,such as the connection between household faucets and water pipes,and the connection of gas pipelines for small gas water heaters.

Welding connection

Principle:Using high temperature to locally melt the connection between Black Seamless Nipples and pipelines,forming a molten pool.After cooling,the molten pool solidifies and firmly connects the two together.Common welding methods include manual arc welding,gas shielded welding,submerged arc welding,etc.

Features:Welding connections have high strength,good sealing,can withstand high pressure and temperature,and are suitable for pipeline systems of various diameters and pressure levels.But welding requires professional equipment and technicians,and it is not easy to disassemble after welding.If maintenance or replacement of parts is needed,cutting and re welding may be required,which will bring certain workload and costs.

Application scenarios:Widely used in pipeline systems in industrial fields such as petrochemicals,electricity,and gas,such as process pipelines in oil refineries,steam pipelines in power plants,long-distance pipelines for urban gas,as well as fire protection pipelines in some large buildings,chilled water and hot water pipelines in central air conditioning,etc.

Flange connection

Principle:Install flanges at the ends of Black Seamless Nipples and pipelines,fasten the two flanges together with bolts,and place sealing gaskets between the flanges to achieve a sealed connection.

Features:Flange connections have good sealing and strength,are easy to install and disassemble,and are suitable for large-diameter pipelines and pipeline systems that require frequent maintenance and repair.However,flange connections require a large amount of space,are relatively expensive,and the uniformity of bolt tightening has a significant impact on sealing performance.

Application scenarios:commonly used for the connection of large equipment and pipelines in industries such as chemical,pharmaceutical,and water treatment,as well as the connection of large-diameter pipelines in high-rise building water supply and drainage and fire protection systems,such as the connection between chemical reaction vessels and pipelines,and the connection between sedimentation tanks and pipelines in sewage treatment plants.

Card sleeve connection

Principle:Card sleeve connection is the process of inserting a card sleeve into the connection between a Black Seamless Nipple and a pipeline.By tightening the nut,the card sleeve is deformed to tightly grip the pipeline,achieving sealing and connection.

Features:Easy and fast installation,no need for welding or special tools,suitable for some thin-walled pipelines and occasions with high installation speed requirements.The sealing performance of the card sleeve connection is good and can withstand certain pressure,but in high-pressure and high vibration environments,regular inspection and fastening may be necessary.

Application scenarios:Commonly used in instrument pipelines,pneumatic pipelines,hydraulic pipelines for some small machinery,such as instrument signal transmission pipelines in industrial automation control systems,compressed air pipelines for pneumatic tools,etc.

Socket connection

Principle:Make one end of the Black Seamless Nipple into a socket and the other end into a socket.When connecting,insert the socket into the socket,and then fill the gap between the socket and the socket with sealing materials such as hemp,rubber rings,sealant,etc.to achieve a sealed connection.

Features:The installation of socket connections is relatively simple,with good sealing performance,and can adapt to a certain degree of pipeline deformation.However,the axial load bearing capacity of pipelines connected by socket connections is relatively weak,and the installation difficulty may increase in large-diameter pipelines.

Application scenarios:Commonly used for water supply and drainage pipelines,gas pipelines,etc.,especially for pipeline systems that use flexible interfaces,such as concrete pipe connections in urban drainage systems and gas inlet pipeline connections in some residential areas.