ASTM A972 A972M-2000(2004) Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles.pdf
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1、Designation: A 972/A 972M 00 (Reapproved 2004)Standard Specification forFusion Bonded Epoxy-Coated Pipe Piles1This standard is issued under the fixed designation A 972/A 972M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the yea
2、r of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers pipe piles with protectivefusion-bonded epoxy powder coating applied by the electro-st
3、atic spray, flocking, or fluidized bed process.NOTE 1The coating applicator is identified throughout this specifica-tion as the manufacturer.1.2 Other organic coatings may be used provided they meetthe requirements of this specification.1.3 Requirements for the powder coating are contained inAnnex A
4、1.1.4 This specification is applicable for orders in either SIunits (as Specification A 972M) or inch-pound units as Speci-fication A 972. The values stated in either SI or inch-poundunits are to be regarded as standard. Within the text, theinch-pound units are shown in brackets.1.5 The following pr
5、ecautionary statement refers to the testmethod portion only, Section 8, of this standard: This standarddoes not purport to address all of the safety concerns, if any,associated with its use. It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand
6、determine the applicability of regulatory limitations priorto use.2. Referenced Documents2.1 ASTM Standards:2A 252 Specification for Welded and Seamless Steel PipePilesB 117 Practice for Operating Salt Spray (Fog) ApparatusD 4060 Test Method for Abrasion Resistance of OrganicCoatings by the Taber Ab
7、raserG 8 Test Method for Cathodic Disbonding of PipelineCoatingsG 12 Test Method for Nondestructive Measurement of FilmThickness of Pipeline Coatings on SteelG 14 Test Method for Impact Resistance of Pipeline Coat-ings (Falling Weight Test)G 20 Test Method for Chemical Resistance of PipelineCoatings
8、2.2 American Petroleum Institute Specification:API RP 5L7 Recommended Practice for Internal Fusion-Bonded Epoxy Coating of Line Pipe32.3 National Association of Corrosion Engineers Stan-dards:TM0175 Visual Standard for Surfaces of New Steel Cen-trifugally Blast Cleaned with Steel Shot or Steel Grit(
9、NACE No. 2)4RP0490 Holiday Detection of Fusion-Bonded Epoxy Exter-nal Pipeline Coatings of 250 to 750 m (10 to 30 mils)42.4 Steel Structures Painting Council Standards:SSPC VIS 1 Visual Standards5SSPC-SP1 Surface Preparation Specification No. 1: SolventCleaning5SSPC-SP10 Near White Blast Cleaning53.
10、 Ordering Information3.1 Orders for pipe piles under this specification mayinclude the following information:3.1.1 Specification for designation and year of issue,3.1.2 Size (pipe pile outside diameter and nominal wallthickness),3.1.3 Quantity.3.1.4 Length,3.1.5 Portions to be coated (full length or
11、 distance fromend),3.1.6 Requirements for certifications (see 4.1 and 12.1),3.1.7 Requirements for material samples (see 4.3),3.1.8 Requirements for patching material (see 4.4),3.1.9 Requirements for visual standards for surface cleaningcomparison (see 5.1),3.1.10 Requirements for test frequency (se
12、e 8.1, 8.2), and1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is under the direct responsibility ofSubcommittee A01.09 on Carbon Steel Tubular Products .Current edition approved Sept 1, 2004. Published October 2004. Originallyapp
13、roved in 1997. Last previous edition approved in 2000 as A 972/A 972M 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe A
14、STM website.3Available from the American Petroleum Institute (API), 1220 L St., WashingtonDC 20005.4Available from the National Association of Corrosion Engineers (NACE), 1440South Creek, Houston, TX 77084.5Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,Pittsburgh, PA
15、15222-4656.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.11 Requirements for inspections at the manufacturingplant (see 10.1).4. Materials and Manufacture4.1 Steel pipe piles to be coated shall meet the requirementsof Specifica
16、tion A 252 as ordered.NOTE 2Surface conditions such as slivers, gouges, laminations, pits,and sharp edges may cause coating application difficulties and effortshould be made to hold these conditions to a minimum.4.2 The powder coating shall meet the requirements listed inAnnex A1 and shall be approv
17、ed by the purchaser.4.2.1 If specified in the order, a written certification shall befurnished to the purchaser that properly identifies the suppliedpowder coating, batch designation of each batch used in theorder, quantity represented, date of manufacture, name andaddress of manufacturer, and state
18、s that the powder coating,meets the requirements of Annex A1.4.3 If specified in the order, a representative 0.2 kg 8 oz.sample from each batch of the powder coating shall be suppliedto the purchaser. The sample shall be packaged in an airtightcontainer and identified by batch designation.4.4 Patchi
19、ng material shall be compatible with the powdercoating and recommended by the manufacturer of the powdercoating. If specified in the order, patching material shall besupplied to the purchaser.5. Surface Preparation5.1 Prior to blast cleaning, the surfaces of steel pipe piles tobe coated shall be pre
20、cleaned, as required, in accordance withSSPC-SP1. Steel surfaces shall be cleaned by abrasive blastcleaning to near-white metal in accordance with SSPC-SP10.The cleaning media used shall produce an anchor patternprofile of 38100 m 1.54.0 mils. Either of the followingvisual standards of comparison sh
21、all be used to define the finalsurface condition: SSPC-VIS 1 or NACE TM0175. Expendedblasting media debris and dust shall be removed from blastedsurfaces prior to applying the powder coating.5.2 Prior to application of the fusion-bonded epoxy powdercoating, raised slivers, scabs, laps, sharp edges,
22、or seams shallbe removed using abrasive grinders. No individual area ofgrinding shall exceed 230 cm236 in.2. The total area ofgrinding shall not exceed 1 % of the total surface area.NOTE 3Pipe piles with excessive grinding should be reblasted prior tocoating to establish a suitable anchor pattern in
23、 the ground area.6. Coating Application6.1 The powder coating shall be applied to the cleaned steelsurfaces before visible oxidation occurs, but not exceeding 3 hafter cleaning.6.2 To achieve the required coating thickness (see 7.1), thesteel shall be preheated prior to applying the powder coating i
24、naccordance with the powder coating manufacturers writtenrecommendations. The heat source shall not leave a residue orcontaminant on the steel surfaces. If oxidation occurs, the steelshall be cooled to ambient temperature and recleaned beforeapplying the powder coating.6.3 The powder coating shall b
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