1.1 This specification covers round, cold-drawn, steel spring wire having properties and quality intended for the manufacture of the following types of upholstery springs:1.1.1 Type A—Coiled (Marshall pack),1.1.2 Type B—Coiled and knotted,1.1.3 Type C—Coiled and knotted (offset style),1.1.4 Type D—Coiled and hooked (single and cross helicals),1.1.5 Type E—Coiled and hooked (short tension—regular tensile strength),1.1.6 Type F—Coiled and hooked (short tension—high tensile strength),1.1.7 Type G—Regular lacing,1.1.8 Type H—Automatic lacing,1.1.9 Type I—Zig-zag (U-formed),1.1.10 Type J—Square-formed, and1.1.11 Type K—Sinuous for furniture spring units.1.2 These types of upholstery springs are used in the manufacture of automotive seat springs, furniture springs, bed spring units, mattresses, furniture cushions, and automobile seats. This wire is not intended for the manufacture of mechanical springs.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Preface This is the fourth edition of CSA Z245.6, Coiled aluminum line pipe and accessories. It supersedes the previous editions published in 2002, 1998, and 1992. This edition differs from the previous edition mainly as follows: (a) the quality

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4.1 The process of coiling wire causes the wire to take on a curvature from the process of being mechanically deformed into a coiled geometry. The curvature in the wire is permanent unless the wire is straightened. It will affect how the coiled wire will react when it is subjected to additional wire forming operations. In addition, residual stresses induced from the coiling operation can cause elastic recoil or spring back in subsequent wire forming operations unless the material is straightened and stress relieved prior to forming. These residual stresses can create wide variations in the dimensions of components and/or parts that have been built using the coiled wire (cast).4.2 The direction that the wire has been coiled affects how the wire will be taken off of the coil for subsequent wire forming operations (helix direction).4.3 Lift or spacing between adjacent coils also affects how the wire will be taken off of the coil and can also affect the dimensions of components and/or parts that have been built using the coiled wire due to residual stresses (helix).1.1 This test method covers the various standard methods that are used for measuring camber, cast, helix, and helix direction. The wire may be coiled with or without a spool.1.2 This test method applies to round wire that has a diameter between 0.0127 to 4.78 mm [0.0005 to 0.188 in.]. It also applies to flat or shaped wire.1.3 This test method does not apply to superelastic nitinol wire. It does apply to the as-drawn condition of nitinol wire.1.4 This test method does not apply to the measurement of the straightness of straightened to length wire and tubing.1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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1.1 This specification covers one grade of electric-resistance-welded coiled steel tubing 2 3/8 in. (60.3 mm) and under in outside diameter and 0.035 to 0.125 in. (0.89 to 3.18 mm), inclusive, in average wall thickness. The tubing is intended for conveyance of gas and fuel oil.1.2 The values stated in inch-pound units are to be regarded as the standard.

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