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    ASTM

    ASTM A795/A795M : 08(2012)

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

    Standard Details

    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 1—The 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

    Status : Historical
    Standard Type: Main
    Document No: ASTM A795/A795M : 08(2012)
    Document Year: 2008
    Pages: 7
    • Section Volume:
    • 01.01 Volume 01.01 Steel--Piping, Tubing, Fittings
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