ASTM A795/A795M-08(2012) - 1.9.2012
 
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 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

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

[6900]

3

80

3.500

[88.9]

0.216

[5.49]

7.58

[11.29]

7.62

[11.35]

1000

[6900]

1000

[6900]

31/2 

90

4.000

[101.6]

0.226

[5.74]

9.12

[13.58]

9.21

[13.71]

1200

[8300]

1200

[8300]

4

100

4.500

[114.3]

0.237

[6.02]

10.80

[16.09]

10.91

[16.25]

1200

[8300]

1200

[8300]

5

125

5.563

[141.3]

0.258

[6.55]

14.63

[21.79]

14.82

[22.07]

C

C

1200

[8300]

6

150

6.625

[168.3]

0.280

[7.11]

18.99

[28.29]

19.20

[28.60]

C

C

1200

[8300]

8

200

8.625

[219.1]

0.277A

[7.04]

24.72

[36.82]

25.57

[38.09]

C

C

1200

[8300]

10

250

10.750

[273.1]

0.307A

[7.80]

34.27

[51.05]

35.78

[53.29]

C

C

1000

[6900]

A NPS 1/2 through 6 [DN 15 through 150]—Schedule 40; NPS 8 and 10 [DN 200 and 250]—Schedule 30.
B Based on 20-ft [6.1-m] lengths.
C Furnace-welded pipe is not made in sizes larger than NPS 4 [DN 100].
Note 2—Successful bending of pipe is a function of equipment and technique as well as pipe properties.

1.2 This pipe is suitable for joining by the following methods:

1.2.1 Light-Weight Fire Protection Pipe—Rolled groove, welding, and fittings for plain end pipe. See Table 1 for dimensions.

1.2.2 Standard-Weight Fire Protection Pipe—Cut or rolled groove, threading, welding, and fittings for plain end pipe. See Table 2 for dimensions.

1.2.3 For pipe having dimensions other than those of Table 1 and Table 2, the joining method must be compatible with the pipe dimensions. A complete listing of standard light weight dimensions appears in ASME B36.10 and B36.19.

1.3 The following safety hazards caveat pertains only to the test method portion, Sections 8, 9, and 10, of this specification: 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.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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 non-conformance with the standard.

 
2. Referenced Documents

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

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.

MIL-STD-129

Marking for Shipment and Storage

MIL-STD-163

Steel Mill Products, Preparation for Shipment and Storage

A90/A90M-21

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

A700-14(2019)

Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment

A751-25

Standard Test Methods and Practices for Chemical Analysis of Steel Products

A865-03

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

B6-23

Standard Specification for Zinc

E213-22

Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing

E309-24

Standard Practice for Eddy Current Examination of Steel Tubular Products

E570-25

Standard Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products