ASTM A795/A795M-21
(Specification)Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
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.”
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 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.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A795/A795M −21
Standard Specification for
Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and
1
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* shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the
1.1 This specification covers black and hot-dipped galva-
standard.
nized welded and seamless steel pipe in NPS 1/2 to NPS 10,
inclusive [DN 15 to DN 250, inclusive] (Note 1), with wall
1.4 The following safety hazards caveat pertains only to the
thicknesses as given in Table 1 and Table 2. Pipe having other
test method portion, Sections 8, 9, and 10, of this specification:
wallthicknessesmaybefurnishedprovidedsuchpipecomplies
This standard does not purport to address all of the safety
with all other requirements of this specification and the outside
concerns, if any, associated with its use. It is the responsibility
diameter is as given in Table 2. Pipe ordered under this
of the user of this standard to establish appropriate safety,
specification is intended for use in fire protection systems. The
health, and environmental practices and determine the appli-
pipe may be bent, but it is not intended for bending made at
cability of regulatory limitations prior to use.
ambient temperature wherein the inside diameter of the bend is
1.5 This international standard was developed in accor-
less than twelve times the outside diameter of the pipe being
dance with internationally recognized principles on standard-
bent (Note 2).
ization established in the Decision on Principles for the
NOTE 1—The dimensionless designators NPS (nominal pipe size) and Development of International Standards, Guides and Recom-
DN (nominal diameter) have been substituted in this standard for such
mendations issued by the World Trade Organization Technical
traditional terms as “nominal diameter,” “size,” and “nominal size.”
Barriers to Trade (TBT) Committee.
NOTE 2—Successful bending of pipe is a function of equipment and
technique as well as pipe properties.
2. Referenced Documents
1.2 This pipe is suitable for joining by the following
2
methods: 2.1 ASTM Standards:
A90/A90M Test Method for Weight [Mass] of Coating on
1.2.1 Light-Weight Fire Protection Pipe— Rolled groove,
Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
welding, and fittings for plain end pipe. See Table 1 for
A700 Guide for Packaging, Marking, and Loading Methods
dimensions.
for Steel Products for Shipment
1.2.2 Standard-Weight Fire Protection Pipe—Cut or rolled
A751 Test Methods and Practices for Chemical Analysis of
groove, threading, welding, and fittings for plain end pipe. See
Steel Products
Table 2 for dimensions.
A865 Specification for Threaded Couplings, Steel, Black or
1.2.3 For pipe having dimensions other than those of Table
Zinc-Coated (Galvanized)Welded or Seamless, for Use in
1 and Table 2, the joining method must be compatible with the
Steel Pipe Joints
pipe dimensions. A complete listing of standard light weight
B6 Specification for Zinc
dimensions appears in ASME B36.10 and B36.19.
E213 Practice for Ultrasonic Testing of Metal Pipe and
1.3 The values stated in either SI units or inch-pound units
Tubing
are to be regarded separately as standard. Within the text, the
E309 Practice for Eddy Current Examination of Steel Tubu-
SI units are shown in brackets. The values stated in each
lar Products Using Magnetic Saturation
system may not be exact equivalents; therefore, each system
E570 Practice for Flux Leakage Examination of Ferromag-
netic Steel Tubular Products
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.09 on Carbon Steel Tubular Products. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2021. Published March 2021. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1982. Last previous edition approved in 2020 as A795/A795M – 13 Standards volume information, refer to the standard’s Document Summary page on
(2020). DOI: 10.1520/A0795_A0795M-21. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, P
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A795/A795M − 13 (Reapproved 2020) A795/A795M − 21
Standard Specification for
Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and
1
Seamless Steel Pipe for Fire Protection Use
This standard is issued under the fixed designation A795/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 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.”
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 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.
1.4 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, health, and environmental practices and determine the applicability of regulatory
limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.09
on Carbon Steel Tubular Products.
Current edition approved March 1, 2020March 1, 2021. Published March 2020March 2021. Originally approved in 1982. Last previous edition approved in 20132020 as
A795/A795M – 13.A795/A795M – 13 (2020). DOI: 10.1520/A0795_A0795M-13R20.10.1520/A0795_A0795M-21.
*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
1
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A795/A795M − 21
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
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]
1
1 ⁄4 32 1.660 [42.2] 0.109 [2.77] 1.81 [2.69] 500 [3400] 1000 [6900]
1
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] 0.1
...
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