At the station the inside certain length of straight pipe, should put metal telescopic joint, metal telescopic joint should adopt rod type (4 bar) axial type bellows expansion joint, the working medium for tap water, both ends for flange connection. Metal telescopic joint installation end is for fixed support, and the other end of the first guide bracket from the slip joint distance is 4 times the diameter, the second guide bracket and the first guide bracket distance for 14 times pipe diameter.
Metal expansion section of the corrugated tube should adopt stainless steel manufacturing, material not less than SUS304, connecting flange with carbon steel manufacturing. Bellows type expansion joint structure due to prevent stainless steel corrugated pipe and carbon steel flanges occurred electric corrosion technical measures.
Bellows expansion joint
Telescopic joint should adopt single connecting rod axial type, both ends for flange connection. Expansion section of the biggest expansion volume and pressure should meet the design requirements. Telescopic joint should adopt the stainless steel, connecting flange with carbon steel manufacturing. Bellows type expansion joint structure due to prevent stainless steel corrugated pipe and carbon steel flanges occurred electric corrosion technical measures.
 

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