ASTM A795/A795M-08(2012)

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

ABSTRACT
This specification covers black and hot-dipped zinc-coated (galvanized) welded and seamless steel pipe for fire protection use. 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. The steel shall conform to the required chemical composition. Each length of pipe shall be subjected to a hydrostatic test without leakage through the pipe wall. As an alternative to the hydrostatic test, and when accepted by the purchaser, each pipe shall be tested with a non-destructive electrical method. Finally, flattening test shall be performed on the pipe in accordance with, electric-resistance-welded pipe, and furnace-welded pipe.
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    
...

General Information

• Status: Historical
• Publication Date: 31-Aug-2012
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A795/A795M-08 - Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
• Effective Date: 01-Sep-2012
• Replaced By: ASTM A795/A795M-13 - Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
• Effective Date: 01-May-2013
• Referred By: ASTM F1994-99(2023) - Standard Test Method for Shipboard Fixed Foam Firefighting Systems
• Effective Date: 01-Sep-2012
• Referred By: ASTM F3226/F3226M-19 - Standard Specification for Metallic Press-Connect Fittings for Piping and Tubing Systems
• Effective Date: 01-Sep-2012

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A795/A795M −08(Reapproved 2012)
Standard Specification for
Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and
Seamless Steel Pipe for Fire Protection Use
This standard is issued under the fixed designationA795/A795M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* health practices and determine the applicability of regulatory
limitations prior to use.
1.1 This specification covers black and hot-dipped galva-
1.4 The values stated in either SI units or inch-pound units
nized welded and seamless steel pipe in NPS 1/2 to NPS 10,
are to be regarded separately as standard. Within the text, the
inclusive [DN 15 to DN 250, inclusive] (Note 1), with wall
SI units are shown in brackets. The values stated in each
thicknesses as given in Table 1 and Table 2. Pipe having other
system may not be exact equivalents; therefore, each system
wallthicknessesmaybefurnishedprovidedsuchpipecomplies
shall be used independently of the other. Combining values
with all other requirements of this specification and the outside
from the two systems may result in non-conformance with the
diameter is as given in Table 2. Pipe ordered under this
standard.
specification is intended for use in fire protection systems. The
pipe may be bent, but it is not intended for bending made at
2. Referenced Documents
ambient temperature wherein the inside diameter of the bend is
2.1 ASTM Standards:
less than twelve times the outside diameter of the pipe being
A90/A90M Test Method for Weight [Mass] of Coating on
bent (Note 2).
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
NOTE 1—The dimensionless designators NPS (nominal pipe size) and
A700 Practices for Packaging, Marking, and Loading Meth-
DN (nominal diameter) have been substituted in this standard for such
ods for Steel Products for Shipment
traditional terms as “nominal diameter,” “size,” and “nominal size.”
A751 Test Methods, Practices, and Terminology for Chemi-
NOTE 2—Successful bending of pipe is a function of equipment and
technique as well as pipe properties. cal Analysis of Steel Products
A865 Specification for Threaded Couplings, Steel, Black or
1.2 This pipe is suitable for joining by the following
Zinc-Coated (Galvanized)Welded or Seamless, for Use in
methods:
Steel Pipe Joints
1.2.1 Light-Weight Fire Protection Pipe— Rolled groove,
B6 Specification for Zinc
welding, and fittings for plain end pipe. See Table 1 for
E213 Practice for Ultrasonic Testing of Metal Pipe and
dimensions.
Tubing
1.2.2 Standard-Weight Fire Protection Pipe—Cut or rolled
E309 Practice for Eddy-Current Examination of Steel Tubu-
groove, threading, welding, and fittings for plain end pipe. See
lar Products Using Magnetic Saturation
Table 2 for dimensions.
E570 Practice for Flux Leakage Examination of Ferromag-
1.2.3 For pipe having dimensions other than those of Table
netic Steel Tubular Products
1 and Table 2, the joining method must be compatible with the
2.2 ASME Standards:
pipe dimensions. A complete listing of standard light weight
B1.20.1 Pipe Threads, General Purpose, Inch
dimensions appears in ASME B36.10 and B36.19.
B36.10 Welded and Seamless Wrought Steel Pipe
1.3 The following safety hazards caveat pertains only to the
B36.19 Stainless Steel Pipe
test method portion, Sections 8, 9, and 10, of this specification:
2.3 Federal Standard:
This standard does not purport to address all of the safety
Fed. Std. No. 123 Marking for Shipments (Civil Agencies)
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
This specification is under the jurisdiction of ASTM Committee A01 on Steel, the ASTM website.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Available from American Society of Mechanical Engineers (ASME), ASME
A01.09 on Carbon Steel Tubular Products. International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Current edition approved Sept. 1, 2012. Published November 2012. Originally www.asme.org.
approved in 1982. Last previous edition approved in 2008 as A795/A795M–08. AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
DOI: 10.1520/A0795_A0795M-08R12. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A795/A795M−08 (2012)
A
TABLE 1 Dimensions, Weights, and Test Pressure For Light-Weight Fire Protection Pipe—Schedule 10
Test Pressure
Seamless and
NPS DN Outside Diameter Nominal Wall Thickness Weight Plain End
Furnace-Welded Electric-Resistance-
Designator Designator
Welded
in. mm in. mm lb/ft kg/m psi kPa psi kPa
⁄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]
1 ⁄4 32 1.660 [42.2] 0.109 [2.77] 1.81 [2.69] 500 [3400] 1000 [6900]
1 ⁄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]
2 ⁄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]
3 ⁄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]
BB
5 125 5.563 [141.3] 0.134 [3.40] 7.78 [11.58] 1200 [8300]
BB
6 150 6.625 [168.3] 0.134 [3.40] 9.30 [13.85] 1000 [6900]
C BB
8 200 8.625 [219.1] 0.188 [4.78] 16.96 [25.26] 800 [5500]
C BB
10 250 10.750 [273.1] 0.188 [4.78] 21.23 [31.62] 700 [4800]
A
Schedule 10 corresponds to Schedule 10S as listed in ANSI B36.19 for NPS ⁄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
Test Pressure
Seamless and
Specified Outside Nominal Wall Weight Threaded
NPS DN Weight Plain End
A B Electric-
Diameter Thickness and Coupled
Furnace-Welded
Designator Designator
Resistance-
Welded
in. mm in. mm lb/ft kg/m lb/ft kg/m psi kPa psi kPa
⁄2 15 0.840 [21.3] 0.109 [2.77] 0.85 [1.27] 0.85 [1.27] 700 [4800] 700 [4800]
⁄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]
1 ⁄4 32 1.660 [42.2] 0.140 [3.56] 2.27 [3.39] 2.28 [3.40] 1000 [6900] 1000 [6900]
1 ⁄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]
2 ⁄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]
3 ⁄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]
CC
5 125 5.563 [141.3] 0.258 [6.55] 14.63 [21.79] 14.82 [22.07] 1200 [8300]
CC
6 150 6.625 [168.3] 0.280 [7.11] 18.99 [28.29] 19.20 [28.60] 1200 [8300]
A CC
8 200 8.625 [219.1] 0.277 [7.04] 24.72 [36.82] 25.57 [38.09] 1200 [8300]
A CC
10 250 10.750 [273.1] 0.307 [7.80] 34.27 [51.05] 35.78 [53.29] 1000 [6900]
A
NPS ⁄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 3—See Annex A1 for definitions of the types of pipe.
2.4 Military Standards:
MIL-STD-129 Marking for Shipment and Storage
5. Ordering Information
MIL-STD-163 Steel Mill Products, Preparation for Ship-
ment and Storage
5.1 Orders for material under this specification should
include the following, as required, to describe the desired
3. Terminology
material adequately:
3.1 Definitions of Terms Specific to This Standard:
5.1.1 Quantity (feet, metres, or number of lengths),
3.1.1 defect—an imperfection of sufficient size or magni-
5.1.2 Name of material (steel pipe),
tude to be cause for rejection.
5.1.3 Type (seamless, electric-resistance-welded, or
3.1.2 imperfection—any discontinuity or irregularity found furnace-welded),
in the pipe. 5.1.4 Grade (seamless and electric-resistance-welded only),
5.1.5 Size (NPS or DN designator and weight class; stan-
4. Classification
dard weight or light weight; or outside diameter) and wall
thickness (Table 1 and Table 2),
4.1 Pipe may be furnished in the following types (Note 3):
4.1.1 Type F—Furnace-butt welded, continuous welded, 5.1.6 Finish (black, galvanized, or other type of coating as
specified by the purchaser),
4.1.2 Type E—Electric-resistance-welded, or
4.1.3 Type S—Seamless. 5.1.7 Length (specific or random),
A795/A795M−08 (2012)
5.1.7.1 Grade for Type E and Type S, facturer may apply the hydrostatic test to pipe with plain ends,
5.1.8 End finish, with threads only, or with threads and couplings. The hydro-
5.1.8.1 Plain end, square cut, static test may be applied to single or multiple lengths.
5.1.8.2 Plain end, beveled,
8.2 The hydrostatic test shall be applied, without leakage
5.1.8.3 Cut groove (Note 4),
through the pipe wall, to each length of pipe.
5.1.8.4 Rolled groove (Note 4),
5.1.8.5 Threads only, NOTE 5—The hydrostatic test pressures given herein are inspection test
pressures. They are not intended as a basis for design and do not have any
5.1.8.6 Threaded and coupled, and
direct relationship to working pressures.
5.1.8.7 Couplings power tight.
NOTE 4—Type of groove specified by the purchaser.
9. Nondestructive Electric Test
5.1.9 ASTM designation.
9.1 As an alternative to the hydrostatic test, and when
accepted by the purchaser, test each pipe with a nondestructive
6. Materials and Manufacture
electric test in accordance with Practice E213, Practice E309,
6.1 The steel for both welded and seamless pipe shall be
or Practice E570. It is the intent of this test to reject pipe
made by one or more of the following processes: open-hearth,
containing defects.
electric-furnace, or basic-oxygen.
9.2 The following information is for the benefit of the user
6.2 Welded pipe NPS 4 [DN 100] and under may be
of this specification:
furnace-welded or electric-resistance welded. Welded pipe
9.2.1 The ultrasonic examination referred to in this specifi-
over NPS 4 [DN 100] shall be electric-resistance-welded.
cation is intended to detect longitudinal discontinuities having
6.3 The weld seam of electric-resistance-welded pipe in
a reflective area similar to or larger than the reference notch.
Grade B shall be heat treated after welding to a minimum of
The examination may not detect circumferentially oriented
1000 °F [540 °C] so that no untempered martensite remains, or
imperfections or short, deep defects.
otherwise processed in such a manner that no untempered
9.2.2 The eddy-current examination referenced in this
martensite remains.
specification has the capability of detecting significant
discontinuities, especially of the short, abrupt type.
7. Chemical Composition
9.2.3 The flux leakage examination referred to in this
7.1 The steel shall conform to the requirements as to
specification is capable of detecting the presence and location
chemical composition specified in Table 3.
of significant longitudinally or transversely oriented disconti-
7.2 An analysis of two pipes from each lot of 500 lengths, nuities. The provisions of this specification only require
or fraction thereof, may be made by the purchaser. The longitudinal calibration for flux leakage. Different techniques
chemical composition thus determined shall conform to the need to be employed for the detection of differently oriented
requirements specified in Table 3. imperfections.
9.2.4 The hydrostatic test referred to in Section 8 is a test
7.3 Methods, practices, and definitions for chemical analy-
method provided for in many product specifications. This test
sis shall be in accordance with Test Methods, Practices, and
has the capability of finding defects of a size permitting the test
Terminology A751.
fluid to leak through the tube wall and may be either visually
7.4 If the analysis of either pipe does not conform to the
seen or detected by a loss of pressure. This test may not detect
requirements specified in Table 3, analyses shall be made on
very tight, through-the-wall defects or defects that extend an
additional pipes of double the original number from the same
appreciable distance into the wall without complete penetra-
lot, each of which shall conform to the requirements specified
tion.
in Table 3.
9.2.5 Apurchaser interested in ascertaining the nature (type,
size, location, and orientation) of discontinuities that can be
8. Hydrotest
detected in the specific application of these examinations
8.1 Each length of pipe shall be subjected to a hydrostatic
should discuss this with the manufacturer of the tubular
testbythemanufacturer.Theminimumtestpressureshallbeas
product.
prescribedinTable1andTable2.Thisdoesnotprohibittesting
9.3 In order to accommodate the various types of nonde-
at a higher pressure at the manufacturer’s option. The manu-
structive electric testing equipment and techniques in use, the
calibrationtubeshallcontain,attheoptionoftheproducer,any
TABLE 3 Chemical Requirements
one or more of the following discontinuities to establish a
Composition, max, %
minimum sensitivity level for rejection.
CMn P S
9.3.1 Drilled Hole—Drill a hole radially and completely
Type E (electric-resistance-welded pipe) & Type S (seamless pipe)
through the pipe wall, care being taken to avoid distortion of
Open-hearth, electric-furnace or basic-oxygen:
Grade A 0.25 0.95 0.035 0.035 the pipe while drilling. The diameter of the hole shall not be
Grade B 0.30 1.20 0.035 0.035
larger than 0.031 in. [0.8 mm] for pipe under 0.125 in. [3.2
Type F (furnace-welded pipe)
mm] in wall thickness, not larger than 0.0625 in. [1.6 mm] for
Open-hearth, electric-furnace, or basic oxygen 0.050 0.045
pipebetween0.125in.[3.2mm]and0.200in.[5.0mm]inwall
A795/A795M−08 (2012)
thickness, and not larger than 0.125 in. [3.2 mm] for pipe over weld at 90° f
...