As a minimum the following information should be provided when ordering an expansion joint:
- 
Size of the line. 
- 
Design pressure. 
- 
Design temperature. 
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Design movements and required cycle life. 
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Overall length requirement, if any. 
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Type of end connections. 
- 
Bellows material. 
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Pipe material. 
- 
Flange specification and material. 
- 
Type of expansion joint. 
- 
Accessories. 
 
								 
															