ASTM A972/A972M-00(2021)
(Specification)Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
ABSTRACT
This specification covers standard requirements for pipe piles with protective fusion-bonded epoxy powder coating applied by the electrostatic spray, flocking, or fluidized bed process. The surfaces of steel pipe piles to be coated shall be precleaned, as required. Steel surfaces shall be cleaned by abrasive blast cleaning to near-white metal. Prior to application of the fusion-bonded epoxy powder coatings, raised silvers, scabs, laps, sharp edges, or seams shall be removed using abrasive grinders. The powder coating shall be applied to cleaned steel surfaces before visible oxidation occurs. To achieve the required coating thickness, the steel shall be preheated prior to applying the powder coating. The heat source shall not leave a residue or contaminant on the steel surfaces. If oxidation occurs, the steel shall be cooled to ambient temperature and recleaned before applying the powder coating. The steel pipe piles shall be tested and shall meet the requirements for coating thickness and coating continuity.
SCOPE
1.1 This specification covers pipe piles with protective fusion-bonded epoxy powder coating applied by the electrostatic spray, flocking, or fluidized bed process.
Note 1: The coating applicator is identified throughout this specification as the manufacturer.
1.2 Other organic coatings may be used provided they meet the requirements of this specification.
1.3 Requirements for the powder coating are contained in Annex A1.
1.4 This specification is applicable for orders in either SI units (as Specification A972M) or inch-pound units [as Specification A972]. The values stated in either SI or inch-pound units are to be regarded as standard. Within the text, the inch-pound units are shown in brackets.
1.5 The following precautionary statement refers to the test method portion only, Section 8, of this standard: 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.
1.6 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.
General Information
Relations
Standards Content (Sample)
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: A972/A972M −00 (Reapproved 2021)
Standard Specification for
Fusion Bonded Epoxy-Coated Pipe Piles
This standard is issued under the fixed designationA972/A972M; 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 B117 Practice for Operating Salt Spray (Fog) Apparatus
D4060 Test Method for Abrasion Resistance of Organic
1.1 This specification covers pipe piles with protective
Coatings by the Taber Abraser
fusion-bonded epoxy powder coating applied by the electro-
G8 Test Methods for Cathodic Disbonding of Pipeline Coat-
static spray, flocking, or fluidized bed process.
ings
NOTE 1—The coating applicator is identified throughout this specifica-
G12 Test Method for Nondestructive Measurement of Film
tion as the manufacturer.
Thickness of Pipeline Coatings on Steel (Withdrawn
1.2 Other organic coatings may be used provided they meet
2013)
the requirements of this specification.
G14 TestMethodforImpactResistanceofPipelineCoatings
(Falling Weight Test)
1.3 Requirements for the powder coating are contained in
G20 Test Method for Chemical Resistance of Pipeline Coat-
Annex A1.
ings
1.4 This specification is applicable for orders in either SI
2.2 American Petroleum Institute Specification:
units (as Specification A972M) or inch-pound units [as Speci-
API RP 5L7 Recommended Practice for Internal Fusion-
fication A972]. The values stated in either SI or inch-pound
Bonded Epoxy Coating of Line Pipe
units are to be regarded as standard. Within the text, the
2.3 National Association of Corrosion Engineers Stan-
inch-pound units are shown in brackets.
dards:
1.5 The following precautionary statement refers to the test
TM0175 Visual Standard for Surfaces of New Steel Cen-
method portion only, Section 8, of this standard: This standard
trifugally Blast Cleaned with Steel Shot or Steel Grit
does not purport to address all of the safety concerns, if any,
(NACE No. 2)
associated with its use. It is the responsibility of the user of this
RP0490 Holiday Detection of Fusion-Bonded Epoxy Exter-
standard to establish appropriate safety, health, and environ-
nal Pipeline Coatings of 250 to 750 µm (10 to 30 mils)
mental practices and determine the applicability of regulatory 6
2.4 Steel Structures Painting Council Standards:
limitations prior to use.
SSPC VIS 1 Visual Standards
1.6 This international standard was developed in accor-
SSPC-SP1 Surface Preparation Specification No. 1: Solvent
dance with internationally recognized principles on standard-
Cleaning
ization established in the Decision on Principles for the
SSPC-SP10 Near White Blast Cleaning
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3. Ordering Information
Barriers to Trade (TBT) Committee.
3.1 Orders for pipe piles under this specification may
include the following information:
2. Referenced Documents
3.1.1 Specification for designation and year of issue,
2.1 ASTM Standards:
3.1.2 Size (pipe pile outside diameter and nominal wall
A252 Specification for Welded and Seamless Steel Pipe
thickness),
Piles
3.1.3 Quantity.
3.1.4 Length,
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is under the direct responsibility of
Subcommittee A01.09 on Carbon Steel Tubular Products. The last approved version of this historical standard is referenced on
Current edition approved Nov. 1, 2021. Published November 2021. Originally www.astm.org.
approved in 1997. Last previous edition approved in 2015 as A972/A972M – 00 Available from American Petroleum Institute (API), 1220 L. St., NW,
(2015). DOI: 10.1520/A0972_A0972M-00R21. Washington, DC 20005-4070, http://www.api.org.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from NACE International (NACE), 1440 South Creek Dr., Houston,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM TX 77084-4906, http://www.nace.org.
Standards volume information, refer to the standard’s Document Summary page on Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,
the ASTM website. Pittsburgh, PA 15222-4656, http://www.sspc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A972/A972M − 00 (2021)
3.1.5 Portions to be coated (full length or distance from 6.2 To achieve the required coating thickness (see 7.1), the
end), steel shall be preheated prior to applying the powder coating in
3.1.6 Requirements for certifications (see 4.1 and 12.1), accordance with the powder coating manufacturer’s written
3.1.7 Requirements for material samples (see 4.3), recommendations. The heat source shall not leave a residue or
3.1.8 Requirements for patching material (see 4.4), contaminant on the steel surfaces. If oxidation occurs, the steel
3.1.9 Requirements for visual standards for surface cleaning shall be cooled to ambient temperature and recleaned before
comparison (see 5.1), applying the powder coating.
3.1.10 Requirements for test frequency (see 8.1, 8.2), and
6.3 The powder coating shall be applied and cured in
3.1.11 Requirements for inspections at the manufacturing
accordance with the powder coating manufacturer’s written
plant (see 10.1).
recommendations.
6.4 Areas of pipe piles not requiring coating to allow for
4. Materials and Manufacture
welding or other purposes shall be specified by the purchaser
4.1 Steel pipe piles to be coated shall meet the requirements
and shall be blocked-out during the coating application.
of Specification A252 as ordered.
7. Requirements for Coated Pipe Piles
NOTE 2—Surface conditions such as slivers, gouges, laminations, pits,
and sharp edges may cause coating application difficulties and effort
7.1 Coating Thickness:
should be made to hold these conditions to a minimum.
7.1.1 The minimum coating thickness after curing on the
4.2 Thepowdercoatingshallmeettherequirementslistedin
pipe piles shall be 300 µm [12 mils].
Annex A1 and shall be approved by the purchaser.
7.1.2 Thecoatingthicknessshallbemeasuredinaccordance
4.2.1 If specified in the order, a written certification shall be
with Test Method G12 following the instructions for calibra-
furnished to the purchaser that properly identifies the supplied
tionanduserecommendedbythethicknessgagemanufacturer.
powder coating, batch designation of each batch used in the
7.2 Coating Continuity:
order, quantity represented, date of manufacture, name and
7.2.1 Holiday detection shall be performed on each coated
address of manufacturer, and states that the powder coating,
pipe pile in accordance with NACE RP0490 or a 67.5 V direct
meets the requirements of Annex A1.
current, 80-k Ω wet-sponge holiday detector in conjunction
4.3 If specified in the order, a representative 0.2 kg [8 oz]
with a wetting agent.
samplefromeachbatchofthepowdercoatingshallbesupplied
7.2.2 Holidays detected shall be patched in accordance with
to the purchaser. The sample shall be packaged in an airtight
the patching material manufacturer’s written recommenda-
container and identified by batch designation.
tions.
4.4 Patching material shall be compatible with the powder
8. Test Frequency
coating and recommended by the manufacturer of the powder
8.1 Measure the coating thickness on a minimum of every
coating. If specified in the order, patching material shall be
th
10 pipe pile.
supplied to the purchaser.
8.2 Testthecoatingcontinuityovertheentirecoatedsurface
5. Surface Preparation
of each pipe pile.
5.1 Prior to blast cleaning, the surfaces of steel pipe piles to
9. Permissible Coating Damage and Repair of Damaged
be coated shall be precleaned, as required, in accordance with
Coating
SSPC-SP1. Steel surfaces shall be cleaned by abrasive blast
cleaning to near-white metal in accordance with SSPC-SP10. 9.1 Coating damage to pipe piles due to handling or other
The cleaning media used shall produce an anchor pattern causes shall be repaired in the manufacturer’s plant with
profileof38to100µm[1.5to4.0mils].Eith
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