1、Designation: A762/A762M 08A762/A762M 15Standard Specification forCorrugated Steel Pipe, Polymer Precoated for Sewers andDrains1This standard is issued under the fixed designation A762/A762M; the number immediately following the designation indicates the yearof original adoption or, in the case of re
2、vision, 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. Scope1.1 This specification covers polymer precoated corrugated steel pipe intended for use for storm water
3、 drainage, underdrains,the construction of culverts, and similar uses. Pipe covered by this specification is not normally used for the conveyance of sanitaryor industrial wastes. The steel sheet used in fabrication of the pipe has a polymer protective coating over a metallic coating of zinc,55 % alu
4、minum-zinc alloy, or zinc-5 % aluminum-mischmetal alloy.1.2 The polymer precoating provides extra protection of the base metal against corrosion or abrasion, or both, in addition to thatprovided by the metallic coating. Some severe environments may cause corrosion problems to accessory items such as
5、 rivets orcoupling band hardware that does not have a polymer coating. Additional protection for polymer precoated corrugated steel pipecan be provided by use of coatings applied after fabrication of the pipe as described in Specification A849.1.3 This specification does not include requirements for
6、 bedding, backfill, or the relationship between earth cover load and sheetthickness of the pipe. Experience has shown that the successful performance of this product depends upon the proper selection ofsheet thickness, type of bedding and backfill, controlled manufacture in the plant, and care in th
7、e installation. The installationprocedure is described in Practice A798/A798M.1.4 This specification is applicable to orders in either inch-pound units as A762, or in SI units as A762M. Inch-pound units andSI units are not necessarily equivalent. SI units are shown in brackets in the text for clarit
8、y, but they are the applicable values whenthe material is ordered to A762M.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardw
9、areA307 Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile StrengthA449 Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength,General UseA493 Specification for Stainless Steel Wire and Wire Rods for Cold Heading
10、and Cold ForgingA563 Specification for Carbon and Alloy Steel NutsA563M Specification for Carbon and Alloy Steel Nuts (Metric)A742/A742M Specification for Steel Sheet, Metallic Coated and Polymer Precoated for Corrugated Steel PipeA760/A760M Specification for Corrugated Steel Pipe, Metallic-Coated f
11、or Sewers and DrainsA780 Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized CoatingsA796/A796M Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewersand Other Buried ApplicationsA798/A798M Practice for Installing Factory-Ma
12、de Corrugated Steel Pipe for Sewers and Other ApplicationsA849 Specification for Post-Applied Coatings, Pavings, and Linings for Corrugated Steel Sewer and Drainage PipeA929/A929M Specification for Steel Sheet, Metallic-Coated by the Hot-Dip Process for Corrugated Steel PipeB633 Specification for El
13、ectrodeposited Coatings of Zinc on Iron and Steel1 This specification is under the jurisdiction ofASTM Committee A05 on Metallic-Coated Iron and Steel Products and is the direct responsibility of Subcommittee A05.17on Corrugated Steel Pipe Specifications.Current edition approved May 1, 2008May 1, 20
14、15. Published June 2008 May 2015. Originally approved in 1979. Last previous edition approved in 20002008 asA762/A762M 00.A762/A762M 08. DOI: 10.1520/A0762_A0762M-08.10.1520/A0762_A0762M-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at servic
15、eastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.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. Be
16、causeit 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 versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100
17、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1B695 Specification for Coatings of Zinc Mechanically Deposited on Iron and SteelC443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber GasketsD1005 Test Method for Measurement of Dry-Film Thickness o
18、f Organic Coatings Using MicrometersD1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberF568M Specification for Carbon and Alloy Steel Externally Threaded Metric Fasteners (Metric) (Withdrawn 2012)32.2 AASHTO Standard:T 249 Test for Helical Lock Seam Corrugated Pipe43. Termin
19、ology3.1 Definitions of Terms Specific to This Standard:3.1.1 fabricator, nthe producer of the pipe.3.1.2 manufacturer, nthe producer of the sheet.3.1.3 minimized coating structure, na coating characterized by a finer metallurgical coating structure obtained by a treatmentdesigned to restrict the fo
20、rmation of the normal coarse grain structure formed during solidification of the Zn-5 Al-MM alloycoating.3.1.4 purchaser, nthe purchaser of the finished product.3.1.5 regular coating structure, nthe normal coating structure resulting from unrestricted grain growth during normalsolidification of the
21、Zn-5 Al-MM alloy coating.3.2 Abbreviations:3.2.1 55 Al-Zn55 % aluminum-zinc.3.2.2 Zn-5 Al-MMzinc-5 % aluminum-mischmetal.3.2.3 MMmischmetal.4. Classification4.1 The corrugated steel pipe covered by this specification is classified as follows:4.1.1 Type IThis pipe shall have a full circular cross-sec
22、tion, with a single thickness of corrugated sheet, fabricated withannular (circumferential) or helical corrugations.4.1.2 Type IAThis pipe shall have a full circular cross-section, with an outer shell of corrugated sheet and an inner liner ofsmooth (uncorrugated) sheet, fabricated with helical corru
23、gations and lock seams.4.1.3 Type IRThis pipe shall have a full circular cross-section with a single thickness of smooth sheet, fabricated with helicalribs projecting outwardly.4.1.4 Type IIThis pipe shall be a Type I pipe which has been reformed into a pipe arch, having an approximately flat bottom
24、.4.1.5 Type IIAThis pipe shall be a Type IA pipe which has been reformed into a pipe arch, having an approximately flatbottom.4.1.6 Type HRThis pipe shall be a Type IR pipe which has been reformed into a pipe-arch, having an approximately flatbottom.4.1.7 Type IIIThis pipe, intended for use as under
25、drains or for underground disposal of water, shall be a Type I pipe whichhas been perforated to permit the in-flow or out-flow of water.4.1.8 Type IIIAThis pipe, intended for use as underdrains, shall consist of a semicircular cross section, having a smooth(uncorrugated) bottom with a corrugated top
26、 shield.4.2 Perforations in Type III pipe are included in two classes as described in 8.3.2.4.3 Zn-5 Al-MM alloy coated material is available in two coating classes, or structures, as follows:4.3.1 Class AMinimized coating structure, and4.3.2 Class BRegular coating structure.5. Ordering Information5
27、.1 Orders for material to this specification shall include the following information as necessary, to adequately describe thedesired product.5.1.1 Name of material (polymer-coated corrugated steel pipe),5.1.2 Grade of polymer coating indicating thickness on inside and outside (6.1),5.1.3 Type of met
28、allic coating (zinc, aluminum, 55 Al-Zn alloy, or Zn-5 Al-MM alloy) (6.1),5.1.4 ASTM designation and year of issue, as A762-_ for inch-pound units or as A762M_ for SI units,3 The last approved version of this historical standard is referenced on www.astm.org.4 Available from American Association of
29、State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.A762/A762M 1525.1.5 Type of pipe (4.1),5.1.6 Diameter of circular pipe, Table 1, or span and rise of pipe-arch section, Table 2 Table 3 or Table 4 Table 5,5.1.7 L
30、ength, either total length or length of each piece and number of pieces,5.1.8 Description of corrugations (7.2),5.1.9 Sheet thickness (8.1.2),5.1.10 For Type I and Type II pipe, the pipe fabrication method, whether with annular corrugations or helical corrugations(7.1.1),NOTE 1Pipe with annular corr
31、ugations with spot welded or riveted seams is designed by different criteria compared to pipe with helical corrugations.Pipe with annular corrugations must consider seam strength. Therefore, consideration of the method of fabrication is important when pipe is installedunder certain conditions of loa
32、ding.5.1.11 Coupling bands, number, and type (9.1) if special type is required,5.1.12 Gaskets for coupling bands, if required (9.3),5.1.13 For Type III pipe, class of perforations, if other than Class 1 (8.3.2),5.1.14 Certification, if required (14.1), and5.1.15 Special requirements.6. Materials and
33、 Manufacture6.1 Steel Sheet for PipeAll pipe fabricated under this specification shall be formed from polymer precoated sheet conformingto Specification A742/A742M.6.1.1 The grade of coating shall be stated in the order, and the polymer thickness on both inside and outside of the pipe. Thepolymer co
34、ating is classified by grade corresponding to the thickness in mils (thousandths inch) on each side in inch-pound units,and the thickness in micrometres on each side in SI units.Grade Coating Thicknessin. m10/10 250/250 0.010/0.010 250/250TABLE 1 Pipe SizesNominal Inside Diameter Corrugation SizesA
35、Ribbed Pipe Minimum OutsideCircumferenceBin. mm 112 by 14 in.38 by 6.5 mm 223 by 12 in.68 by 13 mm 3 by 1 in.75 by 25 mm5 by 1 in.125 by 25mm34 by 34 by 712in.19 by 19 by 190mm34 by 1 by1112 in.19 by 25 by292 mm34 by 1 by 812in.19 by 25 by216 mmin. mm4 100 X 11.4 2646 150 X 17.7 4418 200 X 24.0 5981
36、0 250 X 30.2 75512 300 X X 36.5 91215 375 X X 46.0 114818 450 X X X X X 55.4 138321 500 X X X X 64.8 162024 600 X X X X 74.2 185427 675 X X X X 83.6 209130 750 X X X X 93.1 248333 825 X X X X 102.5 256136 900 X X X X X X 111.9 279742 1050 X X X X X X 130.8 326948 1200 X X X X X X 149.6 373954 1350 X
37、 X X X X X 168.4 420960 1500 X X X X X X 187.0 467566 1650 X X X X X X 205.7 514272 1800 X X X X X X 224.3 560978 1950 X X X X X X 243.0 607584 2100 X X X X X X 261.7 654290 2250 X X X X X 280.3 700896 2400 X X X X X 299.0 7475102 2550 X X X X 317.6 7941108 2700 X X X X 336.3 8408114 2850 X X X 355.
38、0 8874120 3000 X X X 373.6 9341126 3150 X X X 392.3 9807132 3300 X X X 410.9 10274138 3450 X X X 429.6 10740144 3600 X X X 448.3 11207AAn “X” indicates standard corrugation sizes for each nominal diameter of pipe.BMeasured in valley of annular corrugations. Not applicable to helically corrugated pip
39、e.A762/A762M 1536.1.1.1 Any combination of polymer coating thickness other than shown in 6.1.1 is subject to agreement between themanufacturer and the purchaser or fabricator.6.1.2 The polymer coating is applied to steel sheet having a metallic coating of zinc, 55 % aluminum-zinc alloy, or zinc-5 %a
40、luminum-mischmetal alloy, as described in Specifications A929/A929M. The type of metallic coating should be stated in theorder, consistent with thickness availability as shown in Table 6. If the type of metallic coating is not stated, zinc-coated sheetconforming to Specification A929/A929M shall be
41、used.All pipe furnished on the order shall have the same metallic coating unlessotherwise specified.6.2 Steel Sheet for Coupling BandsThe sheet used in fabricating coupling bands shall conform to Specification A742/A742Mwith the same polymer coating grade as that used for fabrication of the pipe fur
42、nished under the order, and having the same metalliccoating.6.2.1 As an alternative, the steel sheet used in fabricating coupling bands shall conform to Specification A929/A929M with thesame metallic coating as that used for the fabrication of the pipe, with the sheet having a bituminous coating acc
43、ording toSpecification A849, except the requirement for the thickness of bituminous coating shall not apply.6.2.2 When specifically permitted by the purchaser, coupling bands shall be made of steel sheet conforming to SpecificationA929/A929M with the same metallic coating as that used for the fabric
44、ation of the pipe, without bituminous coating.6.3 RivetsThe rivets used in riveted pipe shall be of the same material as the base metal specified for the corrugated sheets.They shall be thoroughly galvanized or sherardized. If bolts and nuts are substituted for rivets (see 7.3.1), they shall meet th
45、efollowing requirements:TABLE 2 Pipe Arch Requirements 223 by 12-in. Corrugations(A762)Pipe ArchSize, in.EquivalentDiameter,in.Span,Ain.Rise,Ain.Minimum Cor-ner Radius,in.Maximum,B,Bin.17 by 13 15 17 13 3 51421 by 15 18 21 15 3 624 by 18 21 24 18 3 71428 by 20 24 28 20 3 835 by 24 30 35 24 3 91242 b
46、y 29 36 42 29 312 101249 by 33 42 49 33 4 111257 by 38 48 57 38 5 131264 by 43 54 64 43 6 1571 by 47 60 71 47 7 161277 by 52 66 77 52 8 1883 by 57 72 83 57 9 20AA tolerance of 1 in. or 2 % of equivalent diameter, whichever is greater, ispermissible in span and rise.BB is defined as the vertical dime
47、nsion from a horizontal line across the widestportion of the arch to the lowest portion of the base.TABLE 3 Pipe Arch Requirements 68 by 13-mm Corrugations(A762M)Pipe ArchSize, mmEquivalentDiameter,mmSpan,AmmRise,AmmMinimumCornerRadius,mmMaximumB,B mm430 by 330 375 430 330 75 135530 by 380 450 530 3
48、80 75 155610 by 460 525 610 460 75 185710 by 510 600 710 510 75 205780 by 560 675 780 560 75 225885 by 610 750 870 630 75 240970 by 690 825 970 690 75 2551060 by 740 900 1060 740 90 2651240 by 840 1050 1240 840 100 2901440 by 970 1200 1440 970 130 3451620 by 1100 1350 1620 1100 155 3801800 by 1200 1
49、500 1800 1200 180 4201950 by 1320 1650 1950 1320 205 4602100 by 1450 1800 2100 1450 230 510AA tolerance of 25 mm or 2 % of equivalent diameter, whichever is greater, will bepermissible in span and rise.BB is defined as the vertical dimension from a horizontal line across the widestportion of the arch to the lowest portion of the base.A762/A762M 154Bolts NutsFor A762 pipeFor A762M pipeA449F568M, Class 8.8A563, Grade CA563M, Class 12The bolts and nuts shall be hot-dip galvanized in conformance with S
