A telescopic joint (also known as a dismantling joint) is a pipeline connection element that permits a controlled amount of axial movement along the pipe axis. Its primary functions are to compensate for axial displacement caused by installation tolerances, thermal expansion/contraction, or ground settlement, and to facilitate the installation, removal, and maintenance of in-line equipment such as valves, pumps, and filters — significantly reducing maintenance downtime. Key Features: Axial displacement compensation – Provides a defined range of axial travel to accommodate installation misalignment and thermal movement Easy equipment removal – Inner sleeve slides axially, allowing rapid removal of valves, pumps, or other in-line equipment without pipe cutting, substantially lowering maintenance costs Reliable sealing – High-quality O-ring or packing seals, resistant to pressure and ageing, with stable sealing performance Multiple configurations – Available in single-flange and double-flange connection types; single or double extension designs Material flexibility – Carbon steel, stainless steel, ductile iron, and other materials to suit different media and corrosion environments Compact footprint – Space-efficient design, convenient for installation in congested pipe corridors Main Technical Parameters: ParameterRangeNominal DiameterDN50 – DN2,000Design PressurePN6 – PN40 (Class rating also available)Axial TravelTypically 150 mm – 500 mm (customisable)Design Temperature-20°C to +200°C (depending on seal material)Working MediaWater, natural gas, crude oil, steam, chemical media, etc. Typical Applications: Water treatment pipelines, district heating networks, oil and gas station process pipelines, pump stations and compressor stations, and any pipeline system requiring convenient in-line equipment access.