ASTM A795/A795M-08(2012)

    Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use

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    1. Scope

    1.1 This specification covers black and hot-dipped galvanized welded and seamless steel pipe in NPS 1/2 to NPS 10, inclusive [DN 15 to DN 250, inclusive] (Note 1), with wall thicknesses as given in Table 1 and Table 2. Pipe having other wall thicknesses may be furnished provided such pipe complies with all other requirements of this specification and the outside diameter is as given in Table 2. Pipe ordered under this specification is intended for use in fire protection systems. The pipe may be bent, but it is not intended for bending made at ambient temperature wherein the inside diameter of the bend is less than twelve times the outside diameter of the pipe being bent (Note 2).

    Note 1The dimensionless designators NPS (nominal pipe size) and DN (nominal diameter) have been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”
    TABLE 1 Dimensions, Weights, and Test Pressure For Light-Weight Fire Protection Pipe—Schedule 10A

    NPS
    Designator

    DN
    Designator

    Outside Diameter

    Nominal Wall Thickness

    Weight Plain End

    Test Pressure

    Furnace-Welded

    Seamless and
    Electric-Resistance-Welded

    in.

    mm

    in.

    mm

    lb/ft

    kg/m

    psi

    kPa

    psi

    kPa

    3/4 

    20

    1.050

    [26.7]

    0.083

    [2.11]

    0.86

    [1.28]

    500

    [3400]

    700

    [4800]

    1

    25

    1.315

    [33.4]

    0.109

    [2.77]

    1.41

    [2.09]

    500

    [3400]

    700

    [4800]

    11/4 

    32

    1.660

    [42.2]

    0.109

    [2.77]

    1.81

    [2.69]

    500

    [3400]

    1000

    [6900]

    11/2 

    40

    1.900

    [48.3]

    0.109

    [2.77]

    2.09

    [3.11]

    500

    [3400]

    1000

    [6900]

    2

    50

    2.375

    [60.3]

    0.109

    [2.77]

    2.64

    [3.93]

    500

    [3400]

    1000

    [6900]

    21/2 

    65

    2.875

    [73.0]

    0.120

    [3.05]

    3.53

    [5.26]

    500

    [3400]

    1000

    [6900]

    3

    80

    3.500

    [88.9]

    0.120

    [3.05]

    4.34

    [6.46]

    500

    [3400]

    1000

    [6900]

    31/2 

    90

    4.000

    [101.6]

    0.120

    [3.05]

    4.98

    [7.41]

    500

    [3400]

    1200

    [8300]

    4

    100

    4.500

    [114.3]

    0.120

    [3.05]

    5.62

    [8.37]

    500

    [3400]

    1200

    [8300]

    5

    125

    5.563

    [141.3]

    0.134

    [3.40]

    7.78

    [11.58]

    B

    B

    1200

    [8300]

    6

    150

    6.625

    [168.3]

    0.134

    [3.40]

    9.30

    [13.85]

    B

    B

    1000

    [6900]

    8

    200

    8.625

    [219.1]

    0.188C

    [4.78]

    16.96

    [25.26]

    B

    B

    800

    [5500]

    10

    250

    10.750

    [273.1]

    0.188C

    [4.78]

    21.23

    [31.62]

    B

    B

    700

    [4800]

    A Schedule 10 corresponds to Schedule 10S as listed in ANSI B36.19 for NPS 3/4 through 6 [DN 20 through 150] only.
    B Furnace-welded pipe is not made in sizes larger than NPS 4 [DN 100].
    C Not Schedule 10.
    TABLE 2 Dimensions, Weights, Test Pressures For Standard-Weight Fire Protection Pipe—Schedule 30 and Schedule 40

    NPS
    Designator

    DN
    Designator

    Specified Outside
    Diameter

    Nominal Wall
    ThicknessA

    Weight Plain End

    Weight Threaded
    and CoupledB

    Test Pressure

    Furnace-Welded

    Seamless and
    Electric-Resistance-Welded

    in.

    mm

    in.

    mm

    lb/ft

    kg/m

    lb/ft

    kg/m

    psi

    kPa

    psi

    kPa

    1/2 

    15

    0.840

    [21.3]

    0.109

    [2.77]

    0.85

    [1.27]

    0.85

    [1.27]

    700

    [4800]

    700

    [4800]

    3/4 

    20

    1.050

    [26.7]

    0.113

    [2.87]

    1.13

    [1.69]

    1.13

    [1.68]

    700

    [4800]

    700

    [4800]

    1

    25

    1.315

    [33.4]

    0.133

    [3.38]

    1.68

    [2.50]

    1.68

    [2.50]

    700

    [4800]

    700

    [4800]

    11/4 

    32

    1.660

    [42.2]

    0.140

    [3.56]

    2.27

    [3.39]

    2.28

    [3.40]

    1000

    [6900]

    1000

    [6900]

    11/2 

    40

    1.900

    [48.3]

    0.145

    [3.68]

    2.72

    [4.05]

    2.73

    [4.07]

    1000

    [6900]

    1000

    [6900]

    2

    50

    2.375

    [60.3]

    0.154

    [3.91]

    3.66

    [5.45]

    3.69

    [5.50]

    1000

    [6900]

    1000

    [6900]

    21/2 

    65

    2.875

    [73.0]

    0.203

    [5.16]

    5.80

    [8.64]

    5.83

    [8.68]

    1000

    [6900]

    1000


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

    ASME Standards

    B1.20.1 Pipe Threads, General Purpose, Inch Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://www.asme.org.

    B36.10 Welded and Seamless Wrought Steel Pipe

    B36.19 Stainless Steel Pipe

    Federal Standard

    Fed.Std.No.123 Marking for Shipments (Civil Agencies) Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

    Military Standards

    MIL-STD-129 Marking for Shipment and Storage

    MIL-STD-163 Steel Mill Products, Preparation for Shipment and Storage

    ASTM Standards

    A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings

    A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    A865 Specification for Threaded Couplings, Steel, Black or Zinc-Coated (Galvanized) Welded or Seamless, for Use in Steel Pipe Joints

    B6 Specification for Zinc

    E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing

    E309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation

    E570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products


    ICS Code

    ICS Number Code 23.040.10 (Iron and steel pipes)

    UNSPSC Code

    UNSPSC Code 40171601(Industrial welded carbon steel pipe); 40171602(Industrial seamless carbon steel pipe)


    DOI: 10.1520/A0795_A0795M-08R12

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