ASTM A865/A865M-06(2012)
(Specification)Standard Specification for Threaded Couplings, Steel, Black or Zinc-Coated (Galvanized) Welded or Seamless, for Use in Steel Pipe Joints
Standard Specification for Threaded Couplings, Steel, Black or Zinc-Coated (Galvanized) Welded or Seamless, for Use in Steel Pipe Joints
ABSTRACT
This guide covers standard specification for black or galvanized welded or seamless threaded steel couplings for use with steel pipe joints in NPS 1/8 to NPS 20 [DN 6 to DN 500] inclusive. The steel for both welded and seamless couplings shall be made by one or more of the following processes: open-hearth, electric-furnace, or basic-oxygen. Welded couplings NPS 3½ [DN 90] and under may be butt-welded. Welded couplings over NPS 3½ [DN 90] shall be electric-welded. The steel shall conform to the required chemical composition for phosphorus and sulfur.
SCOPE
1.1 This specification covers black or galvanized welded or seamless threaded steel couplings for use with steel pipe in NPS 1/8 to NPS 20 [DN 6 to DN 500] inclusive (Note 1). Couplings ordered under this specification are intended for the uses outlined in the pipe specifications referencing this specification. Note 1—The dimensionless designator NPS (nominal pipe size) and DN [diameter nominal] has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:A865/A865M −06 (Reapproved 2012)
Standard Specification for
Threaded Couplings, Steel, Black or Zinc-Coated
(Galvanized) Welded or Seamless, for Use in Steel Pipe
Joints
This standard is issued under the fixed designationA865/A865M; 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* 2.3 API Standards:
5B Specification for Threading, Gaging, and Thread Inspec-
1.1 This specification covers black or galvanized welded or
tion of Casing, Tubing, and Line Pipe Threads
seamless threaded steel couplings for use with steel pipe in
5L Specification for Line Pipe
NPS ⁄8 to NPS 20 [DN 6 to DN 500] inclusive (Note 1).
Couplings ordered under this specification are intended for the
3. Ordering Information
uses outlined in the pipe specifications referencing this speci-
3.1 Orders for material under this specification should
fication.
include the following, as required, to describe the desired
NOTE 1—The dimensionless designator NPS (nominal pipe size) and
material adequately:
DN [diameter nominal] has been substituted in this standard for such
3.1.1 Specification number,
traditional terms as nominal diameter, size, and nominal size.
3.1.2 Quantity (pieces),
1.2 The values stated in either SI units or inch-pound units
3.1.3 Name of material (steel pipe-couplings),
are to be regarded separately as standard. The values stated in
3.1.4 Method of manufacture (welded or seamless),
each system may not be exact equivalents; therefore, each
3.1.5 Finish (black or Type I or Type II) galvanized (see
system shall be used independently of the other. Combining
8.1),
values from the two systems may result in non-conformance
3.1.6 Size (NPS designator [DN]),
with the standard.
3.1.7 Standard or extra-strong classification,
3.1.8 Taper tapped-couplings for NPS 2 [DN 50] and
2. Referenced Documents
smaller, either recessed or non-recessed, if desired, and
2.1 ASTM Standards:
3.1.9 Certification (see 11.3), if required.
A700 Practices for Packaging, Marking, and Loading Meth-
ods for Steel Products for Shipment (Withdrawn 2014)
4. Process
B6 Specification for Zinc
4.1 The steel for both welded and seamless couplings shall
E376 Practice for Measuring Coating Thickness by
be made by one or more of the following processes: open-
Magnetic-Field or Eddy-Current (Electromagnetic) Test-
hearth, electric-furnace, or basic-oxygen.
ing Methods
4.2 Welded couplings NPS 3 ⁄2 [DN 90] and under may be
2.2 ANSI Standard:
butt-welded, unless otherwise specified. Welded couplings
B 1.20.1 Pipe Threads
over NPS 3 ⁄2 [DN 90] shall be electric-welded.
5. Chemical Composition
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloysand is the direct responsibility of Subcommittee
5.1 The steel shall conform to the chemical composition
A01.09 on Carbon Steel Tubular Products.
requirements as specified in Table 1.
Current edition approved March 1, 2012. Published November 2012. Originally
approved in 1986. Last previous edition approved in 2006 as A865-06. DOI:
10.1520/A0865_A0865M-12. 6. Dimensions
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Coupling dimensions are listed in Tables 2-4 and Figs.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on 1-3.
the ASTM website.
The last approved version of this historical standard is referenced on
www.astm.org.
4 5
Available from American National Standards Institute (ANSI), 25 W. 43rd St., Available from American Petroleum Institute (API), 1220 L. St., NW,
4th Floor, New York, NY 10036. Washington, DC 20005.
*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
A865/A865M−06 (2012)
TABLE 1 Chemical Requirements
furnished for extra-strong and double-extra strong pipe are
Composition, max % recessed. Recessed couplings (Table 4) conform toAPI Speci-
Phosphorus Sulfur fication 5L.
All processes 0.14 0.35
10. Finish
10.1 The finished couplings shall be free of defects.
10.2 The zinc coating on galvanized couplings shall be free
7. Permissible Variations in Dimensions
of voids or excessive roughness.
7.1 Diameter—For couplings NPS 1 ⁄2 [DN 40] and under,
11. Inspection and Certification
the outside diameter at any point shall not vary more than
1 1
⁄64 in. [0.4 mm] over nor more than ⁄32 in. [0.8 mm] under the
11.1 The inspector representing the purchaser shall have
standard specified. For couplings NPS 2 [DN 50] and over, the
entry, at all times while work on the contract of the purchaser
outside diameter shall not vary more than 61 % from the
is being performed, to all parts of the manufacturer’s works
standard specified.
that concern the manufacture of the material ordered. The
manufacturer shall afford the inspector all reasonable facilities
7.2 Threads—The variation of the threads shall not exceed
1 tosatisfyhimthatthematerialisbeingfurnishedinaccordance
61 ⁄2 turns for straight tapped and 61 turn for taper tapped
with this specification.All tests and inspection shall be made at
from nominal as determined using gages and the gaging
the place of manufacture prior to shipment, unless otherwise
practices in ANSI B 1.20.1.
specified, and shall be so conducted as not to interfere
unnecessarily with the operation of the works.
8. Galvanized Couplings
8.1 Galvanized couplings may be coated with zinc by either 11.2 ResponsibilityforInspection—Unlessotherwisespeci-
the hot-dipped (Type 1) or by the electrogalvanizing process. fied in the contract or purchase order, the manufacturer is
responsible for the performance of all inspection and test
(Type II) as specified by the purchaser. The zinc used for the
coating shall be any grade of zinc conforming to Specification requirements specified herein. Except as specified in the
contract order, the producer may use his own or any other
B6.
suitable facilities for the performance of the inspection and test
8.2 Hot-dipped galvanized couplings are coated prior to
requirements specified herein unless disapproved by the pur-
threading.
chaser.The purchaser shall have the right to perform any of the
8.2.1 The minimum weight of the zinc coating on the
inspections and tests set forth in this specification where such
outside surface of the hot-dipped galvanized couplings shall be
2 2 inspections are deemed necessary to assure that material
equivalent to 1.6 oz/ft [490 g/m ].
conforms to prescribed requirements.
8.2.2 The weight of the zinc coating on the outside surface
shall be determined by the use of a magnetic thickness gage, 11.3 The manufacturer or supplier shall upon request, fur-
nish to the purchaser a certificate of inspection stating that the
using the procedure in Practice E376 or using another method
that is mutually agreed upon between the purchaser and the material has been sampled, tested, and inspected in accordance
with this specification, and has been found to meet the
manufacturer.
requirements.
8.3 Electrogalvanized couplings are coated either before or
after threading.
12. Rejection
8.3.1 The weight of the zinc coating on the outside surface
12.1 Each coupling received from the manufacturer may be
of the electrogalvanized couplings shall be equivalent to 0.18
inspected by the purchaser and, if it does not meet the
oz/ft [55 g/m ] (see also 8.2.2)
requirements of this specification based upon
...
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