What is expansion joint ?

Definition :

Expansion joint from the body, seals, pressed components, flexible tube, screws and other components composed of steel products mainly used for absorbing axial thrust displacement and pressure pipe loose set of connections. Compensation practices, also known as pipe joints, loose set of expansion joints, expansion joints loose set limit, the force transmission sets loose joints, steel appliance, etc.
Expansion joint is connecting equipment for pump,valve,pipe unioned by screw , to make it the whole union , with displacement ,which could be adjusted according to the size when installment ,under the normal working enviroment , expansion joint could pass the axial force to the whole pipe system ,greatly improve the effiency , also offer protection for the pump ,valve .
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Classification :

AL nut loose set of expansion joints
AY Gland Telecopic Joint
AF Flange Telecopic Joint
BF Single Limite3d Telecopic Joint
B2F Double Flange limited Telecopic Joint
BY Cover Limited Telecopic Joint
CF Single Flange Power Delivery Joint
C2F Double Flange Power Delivery Joint
CC2F Detachable Double Flange Power Delivery Joint
CM-D Loose Joints large Deflection Compensation
CM-E Spherical Joint Compensation
CM-FY Capping Compensation for Pressure Balanced Joint
CM-FT Filling Pressure Balanced Compensation Joint
SGD Cannula Compensator
CS Thermodynamic Cannula Compensator
FTG Flexible Water string
RSG Flexible pipe connctor
KRHD steel flexible pipe joint
DL PIpe Plugging Device

Material for expansion joint :

Q235 carbon steel(recommended),QT-400 ductile iron ,HT 20 gray iron,1CR18NI9TI stainless steel,we strongly recommend to use Q235 the most cost effective stell type .