ASTM A810-2001(2014) Standard Specification for Zinc-Coated &40 Galvanized&41 Steel Pipe Winding Mesh《镀锌钢管用绕网的标准规格》.pdf

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1、Designation: A810 01 (Reapproved 2014)Standard Specification forZinc-Coated (Galvanized) Steel Pipe Winding Mesh1This standard is issued under the fixed designation A810; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of

2、last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers various designs of welded wiremesh or twisted (woven) hexagonal wire mesh, zinc coatedbefore

3、 fabrication, to be used as reinforcement for the concreteapplied in the manufacture of negative buoyancy pipe neededfor laying pipe in marshes or in water. The mesh is also usedas reinforcement for concrete applied to pipe as a bendable ornonbendable mechanical protective coating when laying pipein

4、 a harsh environment.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 The text of this standard references notes and footnotesthat

5、 provide explanatory material. These notes and footnotes(excluding those in tables and figures) shall not be consideredas requirements of the standard.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Coating onIron and Steel Articles with Zinc or Zinc-Alloy Coatings

6、A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA641/A641M Specification for ZincCoated (Galvanized)Carbon Steel WireA902 Terminology Relating to Metallic Coated Steel Prod-uctsB6 Specification for Zinc3. Terminology3.1 DefinitionsFor definitions of terms used in thisspecifi

7、cation, see Terminology A902.4. Classification4.1 The steel pipe winding mesh is classified by type, basedon method of manufacture, and by design number, related towidth, number of longitudinal wires, and wire sizes.4.2 Types of Fabric:4.2.1 Type TWFabric manufactured by twisting wires toform a mesh

8、 with a series of hexagonal openings, as shown inFig. 1. One of the edges of the fabric includes a straight selvagewire. Additional longitudinal reinforcing wires are includedwhen specified.4.2.2 Type WWFabric manufactured by welding a seriesof longitudinal wires to transverse wires to form a mesh w

9、ithrectangular openings.4.2.2.1 Type WW-CType WW fabric having uniform spac-ing of longitudinal wires, with the longitudinal wires crimpedas indicated in Fig. 2.1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Productsand is the direct responsibili

10、ty of Subcom-mittee A05.12 on Wire Specifications.Current edition approved Aug. 1, 2014. Published August 2014. Originallyapproved in 1983. Last previous edition approved in 2009 as A810 01 (2009)1.DOI: 10.1520/A0810-01R14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orconta

11、ct ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2.2.2 Type WW-NType WW

12、 fabric having nonuniformspacing of longitudinal wires, by having the space between theedge wire and adjacent longitudinal wire double the spacing ofthe intermediate longitudinal wires. All longitudinal wires arecrimped as indicated in Fig. 3.4.2.2.3 Type WW-SType WW fabric having straight lon-gitud

13、inal wires (without crimping), with uniform spacing asindicated in Fig. 4.4.3 Design NumbersThe design number is in the form ofABCD.4.3.1 For Type TW fabric, whereA = nominal width of wire mesh fabric, in inches(millimetres),B = number of straight reinforcing wires, not including thestraight selvage

14、 wire,C = nominal diameter of wire in hexagonal mesh andstraight selvage wire, in inches (millimetres), andD = nominal diameter of straight reinforcing wires, notincluding straight selvage wire, in inches (millimetres).(Example: 7.510.054 0.048.)4.3.2 For Type WW fabric, whereA = nominal overall wid

15、th of wire mesh fabric, in inches(millimetres),B = number of longitudinal wires,C = nominal diameter of longitudinal wires, in inches(millimetres), andD = nominal diameter of transverse wires, in inches (milli-metres). (Example: 7.580.063 0.063.)5. Ordering Information5.1 Orders for zinc-coated stee

16、l pipe winding mesh underthis specification shall include the following information, asnecessary to adequately describe the desired product:5.1.1 Name of material (steel pipe winding mesh),5.1.2 ASTM designation and year of issue,5.1.3 Type of fabric (see 4.2),5.1.4 Design number (see 4.3 and Tables

17、 1 and 2),5.1.4.1 Mesh dimensions for welded mesh (see 9.3 andTable 3),5.1.5 Zinc coating class (see 8.1),5.1.6 Quantity (number of rolls),5.1.7 Width of fabric and length of rolls, and5.1.8 Packaging (see Section 14).6. Materials6.1 The steel from which the wire is produced shall be madeby any comm

18、ercially accepted steelmaking process.6.1.1 The base metal shall be a steel having composition topermit drawing to a finished size and also to ensure freedomfrom zinc flaking during weaving or welding into mesh.FIG. 1 Type TWTwisted Hexagonal Mesh (Design Number 7.5 00.0540)FIG. 2 Type WW-CCrimped W

19、elded Mesh with Uniform Longi-tudinal Wire SpacingFIG. 3 Type WW-NCrimped Welded Mesh with Non-UniformLongitudinal Wire SpacingFIG. 4 Type WW-SWelded Mesh with Straight LongitudinalWiresA810 01 (2014)26.1.2 Wire for Welded MeshBefore welding the galva-nized wire shall have a minimum tensile strength

20、 of 70 000 psi(483 MPa),6.1.3 Wire for Hexagonal Woven MeshBefore weavingthe galvanized wire shall have a maximum tensile strength of75 000 psi (515 MPa),6.2 Slab zinc used for the coating shall be any grade of zincconforming to Specification B6.7. Manufacture7.1 Hexagonal Woven MeshThis fabric is m

21、anufacturedby twisting wires to form a series of openings, hexagonal inshape, as specified in Table 1 and Fig. 1. One of the edges ofthe fabric shall be constructed to include a selvage wire. Inaddition to those specified in Table 1 and Fig. 1, other designs(width and other reinforcing wire configur

22、ations) are subject toagreement between the purchaser and manufacturer.7.2 Welded MeshThis fabric is manufactured by welding aseries of parallel longitudinal wires to transverse wires to formrectangular openings. The longitudinal wires shall be crimpedor not crimped as indicated for the type specifi

23、ed. Crimpingshall be as indicated in Fig. 2. In addition to those specified inTable 2, and Figs. 2-4, other designs (width and longitudinalwire configurations) are subject to agreement between thepurchaser and manufacturer.8. Coating Requirements8.1 The zinc coating shall be Class 1 coating, or shal

24、l be“regular coating”, whichever is specified in the purchase order.8.1.1 Class 1 zinc coating shall be as specified in Specifi-cation A641/A641M.TABLE 1 Standard Sizes and Constructions for Type TW Woven Hexagonal MeshDesign NumbersPrevious DesignNumbersNominal Width,in. (mm)Nominal Diameter ofZinc

25、-Coated Wire,in. (mm)Nominal Cross SectionalArea Per Nominal Width,in.2(mm2)ANominal Cross SectionalArea Per Foot (Meter) ofWidth,in.2(mm2)AB7.500.0540 10712 112 17 712 (190) 0.054 (1.37) 0.0252 (16.26) 0.0430 (91.02)7.510.0540.048C20712 112 1718C712 (190) 0.054 (1.37)/0.048 (1.22) 0.0270 (17.42) 0.

26、0489 (103.51)7.520.0540.048D30712 112 1718D712 (190) 0.054 (1.37)/0.048 (1.22) 0.0287 (18.52) 0.0519 (109.86)7.540.0540.048E50712 112 1718E712 (190) 0.054 (1.37)/0.048 (1.22) 0.0323 (20.84) 0.0580 (122.77)14.2540.0540.048F51414 112 1718F1414 (362) 0.054 (1.37)/0.048 (1.22) 0.0529 (34.13) 0.0475 (100

27、.55)ABased on nominal diameter.BIncludes minimum12-in. (12.70-mm) lap of mesh as applied.CPlus 0.048 in. (1.22 mm) line wire placed 412 in. (114.30 mm) from selvage.DPlus 0.048 in. (1.22 mm) line wires placed 3 in. (76.20 mm) and 6 in. (152.40 mm) from selvage.EPlus 0.048 in. (1.22 mm) line wires pl

28、aced 112 in. (38.10 mm), 3 in. (76.20 mm), 412 in. (114.30 mm), and 6 in. (152.40 mm) from selvage.FPlus 0.048 in. (1.22 mm) line wires placed 3 in. (76.20 mm), 6 in. (152.40 mm), 9 in. (228.60 mm), and 12 in. (304.80 mm) from selvage.TABLE 2 Standard Sizes and Constructions For Type WW Welded Wire

29、MeshDesign NumbersPrevious DesignNumbersNominal Diameter of Zinc-CoatedWire, in. (mm)Nominal Cross Sectional Area PerNominal Width, in.2(mm2)ANominal Cross Sectional Area perFoot (Metre) of Width, in.2(mm2)ABType WW-CUniform SpacingCrimped7.580.0590.059 1.501.50 0.059(1.50)/0.059(1.50) 0.0219 (14.13

30、) 0.0373 (78.96)7.580.0630.063 1.601.60 0.063(1.60)/0.063(1.60) 0.0249 (16.06) 0.0426 (90.17)7.580.0790.063 2.001.60 0.079(2.00)/0.063(1.60) 0.0392 (25.29) 0.0669 (141.61)7.580.0790.079 2.002.00 0.079(2.00)/0.079(2.00) 0.0392 (25.29) 0.0669 (141.61)7.580.0980.079 2.502.00 0.098(2.50)/0.079(2.00) 0.0

31、603 (38.90) 0.1030 (218.03)7.580.1180.079 3.002.00 0.118(3.00)/0.079(2.00) 0.0875 (56.45) 0.1493 (316.03)Type WW-NNon-uniform SpacingCrimped7.560.0630.063 . 0.063(1.60)/0.063(1.60) 0.0187 (12.06) 0.0374 (79.16)7.560.0790.063 . 0.079(2.00)/0.063(1.60) 0.0294 (18.97) 0.0588 (124.46)7.560.0980.079 . 0.

32、098(2.50)/0.079(2.00) 0.0453 (29.23) 0.0905 (191.56)7.560.1180.079 . 0.118(3.00)/0.079(2.00) 0.0656 (42.32) 0.1312 (277.71)Type WW-SUniform SpacingNot Crimped890.0790.079 1414 0.079(2.00)/0.079(2.00) 0.0446 (28.80) 0.0685 (145.06)ABased on nominal diameter.BIncludes minimum12-in. (12.70-mm) lap of m

33、esh for Types WW-C and WW-S, and 1-in. (25.4-mm) lap of mesh for Type WW-N, as applied.TABLE 3 Welded Mesh Sizes and TolerancesNOTE 1Mesh sizes are measured from center to center and alwaysindicated by two figures, L S, where L = the distance between thelongitudinal wires, in. (mm).NOTE 2Crimp depth

34、12 in. (12.7 mm), tolerance 18 in. (3.2 mm).Nominal Mesh Size, L S, in. (mm) Tolerance, L S, in. (mm)Crimped mesh, where L = the distance between the transverse wires aftercrimping; with L = 1 in. (25.4 mm) for Type WW-C mesh, and 1 in. (25.4 mm) or 2in. (50.8 mm) for Type WW-N mesh (as indicated in

35、 Fig. 3).L 258 (67)L 358 (92)564 (2) 1364 (5)564 (2) 1364 (5)Noncrimped Style, where S = the distance between the transverse wires, in.(mm)1 (25.4) 212 (63) 564 (2) 1364 (5)A810 01 (2014)38.1.2 Zinc-coated wire produced as “regular coating” shallhave the full surface covered with zinc, but there is

36、no specifiedminimum weight of coating.8.2 Slight burning of the zinc coating at welded intersec-tions of welded mesh shall not be cause for rejection.9. Dimensions and Permissible Variations9.1 Width of FabricHexagonal mesh fabric is usuallyavailable in 712-in. (190-mm) width. Welded mesh fabric,cri

37、mped, is usually available in 7-in. (178-mm) width having amaximum width of 712 in. (190 mm) including crimp. Non-crimped welded mesh fabric is usually available in 8-in.(203-mm) width. Other widths of woven and welded fabricsare available. Nominal width of fabric shall be as agreed uponbetween the

38、purchaser and manufacturer.9.2 Length of RollNominal length of rolls shall be asagreed upon between the purchaser and manufacturer.9.3 Standard openings in Type TW mesh, between adjacentwires parallel to the selvage wire, is shown in Fig. 1. Standardspacing for longitudinal wires in Type WW-C, Type

39、WW-N,and Type WW-S mesh is shown in Figs. 2-4, respectively.Standard spacing for transverse wires in Type WW fabrics isshown in Table 3. All measurements are center to center ofwires. Spacing other than indicated are subject to agreementbetween the purchaser and manufacturer.9.4 Tolerances:9.4.1 Wid

40、th:9.4.1.1 Hexagonal MeshActual width between outerwires shall not be more than12 in. (13 mm) under the specifiedwidth.9.4.1.2 Welded MeshActual width between outer wiresshall not be more than1364 in. (5 mm) under the specifiedwidth.9.4.2 LengthActual length shall be ordered length 0,+3 %.9.4.3 Mesh

41、 Size:9.4.3.1 For hexagonal mesh, the tolerance shall be 618 in.(63.2 mm).9.4.3.2 Welded mesh size tolerances shall be in accordancewith Table 3.9.4.4 Wire Size:9.4.4.1 Permissible variation of the nominal diameter ofwire shall be as follows:0.035 in. (0.89 mm) to under 0.076 in. (1.93 mm) 0.002 in.

42、 (0.05 mm)0.076 in. (1.93 mm) and over 0.003 in. (0.08 mm)10. Sampling and Testing10.1 For test purposes, one sample shall be taken from oneroll selected at random from each 200 rolls or fraction thereof.10.1.1 Development of cross-sectional area data shall comefrom these samples.10.1.2 Because of t

43、he distortion inherent in the manufactur-ing of the mesh, it is normal to test for coating weight andtensile compliance on samples of wire before fabrication. Thenumber of test specimens will vary with the quality controlprocedures and facilities of each manufacturer.10.2 Determine the weight of zin

44、c coatings for wire speci-fied to have a Class 1 coating, by the stripping test inaccordance with Test Method A90/A90M. Inspect wire speci-fied to have a “regular coating” to verify that the wire iscompletely coated (except for slight burning at welded inter-sections for wire inspected after fabrica

45、tion).10.2.1 For wire tested before fabrication, the minimum testspecimen length shall be 24 in. (600 mm).10.2.2 For wire tested after fabrication, cut short lengths ofwire from between twists or welds, such that the total lengthequals at least 24 in. (600 mm).10.3 Tensile testing shall be as descri

46、bed in Test Methodsand Definitions A370.11. Retests and Rejection11.1 If one or more of the samples fail to show compliancewith any of the requirements of this specification, the lot shallbe subjected to retest.11.2 Retesting of the lot shall be on the basis of a samplingfrequency of one sample for

47、each 50 rolls. If any sample failsto show compliance with the requirements of this specification,the entire lot shall be rejected.12. Inspection12.1 The manufacturer shall afford the inspector represent-ing the purchaser all reasonable facilities to satisfy the inspec-tor that the material is being

48、furnished in accordance with thisspecification. All tests and inspections shall be made at theplace of manufacture before shipment, unless otherwisespecified, and be conducted so as not to interfere unnecessarilywith the operation of the works.13. Certification13.1 When specified in the purchase ord

49、er or contract, thepurchaser shall be furnished certification that the samplesrepresenting each lot have been either tested or inspected asdirected in this specification and that the requirements havebeen met. When specified in the purchase order or contract, areport of the test results shall be furnished.14. Packaging, Marking, and Loading14.1 Packaging will be based on negotiations between thepurchaser