ASTM B428 - 09(2013)

    Standard Test Method for Angle of Twist in Rectangular and Square Copper and Copper Alloy Tube

    Active Standard ASTM B428 | Developed by Subcommittee: B05.06

    Book of Standards Volume: 02.01


      Format Pages Price  
    PDF Version 3 $37.00   ADD TO CART
    Print Version 3 $37.00   ADD TO CART


    Significance and Use

    4.1 The rectangular or square copper alloy tube covered by this test method may be used in applications in which control of twist is important to proper fit in final assembly and to minimize rework to bring the tube into compliance. It is recognized that the amount of twist, in degrees, per increment of length can change as a result of the weight of the product and its length during measurement.

    4.2 This test method provides a procedure for measuring the twist in square and rectangular copper and copper alloy tubes as a measure of the deviation from straightness.

    4.3 This test method allows the purchaser and supplier or manufacturer to inspect square and rectangular copper and copper alloy tube with a standard technique that provides acceptable twist in delivered tubes.

    1. Scope

    1.1 This test method establishes the requirements for the determination of the angle of twist in rectangular and square copper and copper alloy tube.

    1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B846 Terminology for Copper and Copper Alloys


    ICS Code

    ICS Number Code 23.040.15 (Non-ferrous metal pipes)

    UNSPSC Code

    UNSPSC Code 40180000(Tubes tubing and tube fittings)


    DOI: 10.1520/B0428

    ASTM International is a member of CrossRef.

    ASTM B428

    Citing ASTM Standards
    Back to Top