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Home >News > Metal expa
Metal expansion joint
Author: liweiTime: 2015-10-14 09:40:30

Metal expansion joint is one of axial type expansion joints, has the characteristics of bending, bellows under external pressure. Nominal diameter ranges from DN65-10000mm,working pressure is PN0.6-PN25, axial offsets is 10 ~ 360 mm, working temperature is no more than 450℃. Please use the suitable for intermittent steam supply and other need drainage, drain pipe.
Metal expansion joint is also called steel expansion pipe, steel expansion joint. Metal expansion joint series products of metal products, it has higher tensile and compressive strength, soft sealing performance is superior, convenient loading and unloading, and other functions, is widely used in electric power, metallurgy, chemical industry, water supply and drainage and sewage treatment, etc.


Metal expansion joint has the following function
1. Compensating absorption pipeline axial, lateral and angular heat expansion caused deformation.
2. The vibration absorption equipment, reduce the influence of equipment vibration on pipeline.
3. The absorption of the earthquake, subsidence deformation of pipeline.
4. Prevent the pipe joint leakage or damage caused by excessive displacement compensation, it is mainly used for absorption within the range allowed displacement axial displacement and thrust under pressure pipe loose tube connection.
The material of steel telescopic joint is divided into: QT - 400 (ductile cast iron), Q235A (carbon steel), HT20 (grey), 1 cr18ni9ti (stainless steel).
Nominal pressure: steel slip PN0.6 Mpa - PN2.5 MPa VSSJAFC
Section steel telescopic product specifications: DN50- DN4000

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