Coiled Tubing - Corrosion Resistant Steel, Hydraulic Applications, Aerospace
|Publication Date:||1 June 2017|
This SAE Aerospace Recommended Practice (ARP) addresses the design, installation, and testing of coiled tube assemblies ranging from 1/4 inch (6.3 mm) to 1.0 inch (25 mm) diameter using CRES tubing per AMS-T-6845, unless otherwise approved by the Procuring Activity.
This ARP specifically details three different configurations of coiled tubing. These configurations should be compatible with pressure levels up to 3000 psi (20.7 MPa) upon the completion of the analysis for the actual stress and life requirement of the intended application. However, formal qualification tests are recommended to verify the satisfactory installation, clamping, and the life of each unique design.
NOTE: Refer to ARP4146 for information on design of coiled tube assemblies using Titanium tubing.
The purpose of this document is to provide data and information relative to design, fabrication, and installation of formed tubing made from CRES alloy. The formed tubing has the function of accepting relative motion between two points in a hydraulic or pneumatic system.
Field of Application
The use of coiled tubes is encouraged in the design of hydraulic systems per AS5440 or ARP4752/ARP4925, and for pneumatic systems per MIL-P-5518 when standard flexible hoses are not feasible due to installation constraints, compliance limitations, and effusion requirements.