ASTM A972/A972M-00(2004)
(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 A 972M) or inch-pound units [as Specification A 972]. 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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A972/A972M – 00 (Reapproved 2004)
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 G14 Test Method for Impact Resistance of Pipeline Coat-
ings (Falling Weight Test)
1.1 This specification covers pipe piles with protective
G20 Test Method for Chemical Resistance of Pipeline
fusion-bonded epoxy powder coating applied by the electro-
Coatings
static spray, flocking, or fluidized bed process.
2.2 American Petroleum Institute Specification:
NOTE 1—The coating applicator is identified throughout this specifica-
API RP 5L7 Recommended Practice for Internal Fusion-
tion as the manufacturer.
Bonded Epoxy Coating of Line Pipe
1.2 Other organic coatings may be used provided they meet
2.3 National Association of Corrosion Engineers Stan-
the requirements of this specification.
dards:
1.3 Requirements for the powder coating are contained in
TM0175 Visual Standard for Surfaces of New Steel Cen-
Annex A1.
trifugally Blast Cleaned with Steel Shot or Steel Grit
1.4 This specification is applicable for orders in either SI
(NACE No. 2)
units (as Specification A972M) or inch-pound units [as Speci-
RP0490 Holiday Detection of Fusion-Bonded Epoxy Exter-
fication A972]. The values stated in either SI or inch-pound
nal Pipeline Coatings of 250 to 750 µm (10 to 30 mils)
units are to be regarded as standard. Within the text, the
2.4 Steel Structures Painting Council Standards:
inch-pound units are shown in brackets.
SSPC VIS 1 Visual Standards
1.5 The following precautionary statement refers to the test
SSPC-SP1 Surface Preparation Specification No. 1: Solvent
method portion only, Section 8, of this standard: This standard
Cleaning
does not purport to address all of the safety concerns, if any,
SSPC-SP10 Near White Blast Cleaning
associated with its use. It is the responsibility of the user of this
3. Ordering Information
standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior
3.1 Orders for pipe piles under this specification may
to use.
include the following information:
3.1.1 Specification for designation and year of issue,
2. Referenced Documents
3.1.2 Size (pipe pile outside diameter and nominal wall
2.1 ASTM Standards:
thickness),
A252 Specification for Welded and Seamless Steel Pipe
3.1.3 Quantity.
Piles
3.1.4 Length,
B117 Practice for Operating Salt Spray (Fog) Apparatus
3.1.5 Portions to be coated (full length or distance from
D4060 Test Method for Abrasion Resistance of Organic
end),
Coatings by the Taber Abraser
3.1.6 Requirements for certifications (see 4.1 and 12.1),
G8 Test Methods for Cathodic Disbonding of Pipeline
3.1.7 Requirements for material samples (see 4.3),
Coatings
3.1.8 Requirements for patching material (see 4.4),
G12 Test Method for Nondestructive Measurement of Film
3.1.9 Requirements for visual standards for surface cleaning
Thickness of Pipeline Coatings on Steel
comparison (see 5.1),
3.1.10 Requirements for test frequency (see 8.1, 8.2), and
3.1.11 Requirements for inspections at the manufacturing
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
plant (see 10.1).
Stainless Steel and Related Alloys and is under the direct responsibility of
Subcommittee A01.09 .
Current edition approved Sept. 1, 2004. Published October 2004. Originally
approved in 1997. Last previous edition approved in 2000 as A972/A972M – 00. AvailablefromtheAmericanPetroleumInstitute(API),1220LSt.,Washington
DOI: 10.1520/A0972_A0972M-00R04. DC 20005.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from the NationalAssociation of Corrosion Engineers (NACE), 1440
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM South Creek, Houston, TX 77084.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A972/A972M – 00 (2004)
4. Materials and Manufacture 6.4 Areas of pipe piles not requiring coating to allow for
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.
NOTE 2—Surface conditions such as slivers, gouges, laminations, pits, 7. Requirements for Coated Pipe Piles
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
with Test Method G12 following the instructions for calibra-
4.2.1 If specified in the order, a written certification shall be
tionanduserecommendedbythethicknessgagemanufacturer.
furnished to the purchaser that properly identifies the supplied
7.2 Coating Continuity:
powder coating, batch designation of each batch used in the
7.2.1 Holiday detection shall be performed on each coated
order, quantity represented, date of manufacture, name and
pipe pile in accordance with NACE RP0490 or a 67.5 V direct
address of manufacturer, and states that the powder coating,
current, 80-k V wet-sponge holiday detector in conjunction
meets the requirements of Annex A1.
with a wetting agent.
4.3 If specified in the order, a representative 0.2 kg [8 oz.]
7.2.2 Holidays detected shall be patched in accordance with
samplefromeachbatchofthepowdercoatingshallbesupplied
the patching material manufacturer’s written recommenda-
to the purchaser. The sample shall be packaged in an airtight
tions.
container and identified by batch designation.
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
of each pipe pile.
5. Surface Preparation
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
9.1 Coating damage to pipe piles due to handling or other
cleaning to near-white metal in accordance with SSPC-SP10.
causes shall be repaired in the manufacturer’s plant with
The cleaning media used shall produce an anchor pattern
patching material prior to shipment.
profile of 38–100 µm [1.5–4.0 mils]. Either of the following
9.2 The areas of coating damage shall be prepared for the
visual standards of comparison shall be used to define the final
application of patching material by cleaning the damaged area,
surface condition: SSPC-VIS 1 or NACE TM0175. Expended
removing the damaged coating using grinders or other suitable
blasting media debris and dust shall be removed from blasted
means, feathering the adjacent coating, and removing all
surfaces prior to applying the powder coating.
remaining residue or dust.
5.2 Prior to application of the fusion-bonded epoxy powder
9.3 The application of the patching materials to the dam-
coating, raised slivers, scabs, laps, sharp edges, or seams shall
aged areas shall be in accordance wit
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.