ASTM A961-04

    Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

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    1. Scope

    1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications:

    Title of Specification ASTM Designation
    Forgings, Carbon Steel, for Piping Components A105/A105M
    Forgings, Carbon Steel, for General-Purpose Piping A181/A181M
    Forged or Rolled Alloy-Steel Pipe Flanges, Forged A182/A182M
    Fittings, and Valves and Parts for High Temperature Service
    Forgings, Carbon and Low Alloy Steel, Requiring Notch A350/A350M
    Toughness Testing for Piping Components
    Forged or Rolled 8 and 9% Nickel AlloyA522/A522M
    Steel Flanges, Fittings, Valves, and Parts
    for Low-Temperature Service
    Forgings, Carbon and Alloy Steel, for Pipe Flanges, A694/A694M
    Fittings, Valves, and Parts for High-Pressure Transmission Service
    Flanges, Forged, Carbon and Alloy Steel for Low A707/A707M
    Temperature Service
    Forgings, Carbon Steel, for Piping Components with A727/A727M
    Inherent Notch Toughness
    Forgings, Titanium-Stabilized Carbon Steel, for A836/A836M
    Glass-Lined Piping and Pressure Vessel Service

    1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general requirement specification, the requirements of the individual product specification shall prevail over those of this specification.

    1.2 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (see section 4.1.2). The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order as agreed upon between the purchaser and supplier.

    1.3 The values stated in either inch-pound units or SI units (metric) are to be regarded separately as standard. Within the text and the tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation (SI) of the product specification is specified in the order.

    ICS Code

    ICS Number Code 23.040.01 (Pipeline components in general. Pipelines); 77.140.20 (Steels of high quality)

    UNSPSC Code

    UNSPSC Code 40170000(Pipe piping and pipe fittings)

    DOI: 10.1520/A0961-04

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