ISO/TC 20/SC 10/WG 3 - Tubing and tube retaining devices

ISO 18487-1:2017 is applicable to seamless tubing of circular cross-section made from titanium alloy and intended for use primarily in systems with system operating pressure of 35 MPa (5 080 psi) (Pressure Class J), but usage is not limited to such applications.

ISO 8575:2016 provides information relating to the sizes and materials of tubing for use in aerospace hydraulic pressure and return and suction lines. For pressure lines, the requirements apply to the pressure and temperature ranges covered by pressure class D, E and J and temperature type 13 and type 20 as specified in ISO 6771.

ISO 8177:2015 specifies maximum and minimum dimensions for omega clamps (saddle clamps) installed by means of two bolts with nominal diameters of 5 mm. The specified dimensions define a dimensional envelope. This International Standard shall not be considered as an inter-changeability standard. The tolerances for each type of clamp are to be defined in the parts standards drawings.

ISO 12573:2010 specifies the dimensional tolerances to be applied to round section inch series tubing used in aircraft.

ISO 12319:2006 specifies the requirements for the procurement and quality assurance of 'P' (loop style) clamps used in the installation of aerospace fluid systems.

ISO 9679:2006 specifies the test methods and procedures to be used for the qualification and comparison of support or retention devices used in the installation of aerospace fluid systems. It is applicable when reference is made to parts standards, procurement specifications, or other definition documents.

ISO 8574:2004 specifies pressure impulse and burst test procedures for determining and classifying the impulse fatigue strengths of bent tubes used in aerospace hydraulic systems. The procedures are intended for qualification purposes of high- and low-pressure system tubing or for the evaluation of new materials for hydraulic system tubing.

Specifies maximum and minimum dimensions for these clamps installed by means of a bolt with a nominal diameter of 5 mm. The specified dimensions define a dimensional envelope. Shall not be considered as an interchangeability standard. The tolerances for each type of clamp are to be defined in the parts standards drawings.

Lays down die requirements for a scheme to indicate, by appropriate marking, the functions or contents of rigid pipe assemblies in aircraft and spacecraft systems, but excluding those in aero-engines with the exception of those which connect directly to the airframe systems at their break points. These requirements may also be applied to hose assemblies, if desired. The purpose of the scheme is to provide the minimum identification necessary for normal maintenance purposes.

Gives maximum and minimum dimensions for clamps installed by means of a bolt with a nominal diameter of 5 mm. These clamps are intended for the installation, support and guiding of rigid tubing or hose assemblies. Clamps of sizes larger than DN 50 are not suitable for supporting tubing or hose assemblies; they may be used for other equipment, e. g. electrical cables or looms.

Includes the external diameters and thicknesses of tubes, for all metallic materials, to be selected for all uses in aircraft structural and system design. They shall be selected from those specified in the table. The tolerances shall be specified in the relevant standard appropriate to the material and intended application.

Gives definitions for these clamps with or without electrical grounding, designed for a range of tube outside diameters from 4 to 32 mm selected from ISO 2964, and lays down the dimensions of clamp blocks and specifies the test methods for qualification testing. Furthermore gives classification and temperature conditions.

Specifies flexure, pressure impulse and burst test procedures for determining and classifying the fatigue strengths for bent tubing. The procedures are intended for high and low pressure system tubing qualification purposes or for the evaluation of new materials. Describes test equipment, test specimens, stress determination, testing and requirements. Includes figures.

Gives the requirements relating to the sizes and material of tubing for use in hydraulic pressure and return systems. For pressure lines, the requirements apply to the pressure and temperature ranges covered by pressure classes D and E and temperature types II and III as specified in ISO 6771. Tubing materials are included in table 1, outside diameters, wall thicknesses and materials for hydraulic tubing pressure lines are given in table 2. Corresponding national standards for tubing materials are given in table A.1 of annex A.