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美国ASTM 标准A 501 – 01

2023-04-29 来源:好走旅游网
Designation:A501–01

StandardSpecificationfor

Hot-FormedWeldedandSeamlessCarbonSteelStructuralTubing1ThisstandardisissuedunderthefixeddesignationA501;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.

1.Scope

1.1Thisspecificationcoversblackandhot-dippedgalva-nizedhot-formedweldedandseamlesscarbonsteelsquare,round,rectangular,orspecialshapestructuraltubingforwelded,riveted,orboltedconstructionofbridgesandbuild-ings,andforgeneralstructuralpurposes.

1.2Squareandrectangulartubingisfurnishedinsizes1to10in.(25.4to254mm)acrossflatsideswithwallthicknesses0.095to1.000in.(2.41to25.40mm),dependentuponsize;roundtubingisfurnishedinNPS1⁄2toNPS24(seeNote1)inclusive,withnominal(average)wallthicknesses0.109to1.000in.(2.77to25.40mm),dependentuponsize.Specialshapetubingandtubingwithotherdimensionsispermittedtobefurnished,providedthatsuchtubingcomplieswithallotherrequirementsofthisspecification.

NOTE1—ThedimensionlessdesignatorNPS(nominalpipesize)hasbeensubstitutedinthisstandardforsuchtraditionaltermsas“nominaldiameter,”“size,”and“nominalsize.”

A53/A53MSpecificationforPipe,Steel,BlackandHot-Dipped,Zinc-Coated,WeldedandSeamless2A370TestMethodsandDefinitionsforMechanicalTestingofSteelProducts3A700PracticesforPackaging,Marking,andLoadingMethodsforSteelProductsforDomesticShipment4A751TestMethods,Practices,andTerminologyforChemicalAnalysisofSteelProducts3A941TerminologyRelatingtoSteel,StainlessSteel,Re-latedAlloys,andFerroalloys22.2AIAGStandard:

B-1BarCodeSymbologyStandard53.Terminology

3.1Definitions—Fordefinitionsoftermsusedinthisspeci-fication,refertoTerminologyA941.

4.OrderingInformation

4.1Ordersformaterialunderthisspecificationshallcontaininformationconcerningasmanyofthefollowingitemsasarerequiredtodescribethedesiredmaterialadequately:4.1.1Quantity(feetornumberoflengths),4.1.2Nameofmaterial(hot-formedtubing),

4.1.3Methodofmanufacture(seamlessorwelded)(seeSection6),

4.1.4Finish(blackorgalvanized),

4.1.5Size(outsidediameterandcalculatednominalwallthicknessforroundtubingandtheoutsidedimensionsandcalculatednominalwallthicknessforsquareandrectangulartubing(Section11),

4.1.6Length(random,multiple,orspecific;see12.3),4.1.7Endcondition(see17.3),4.1.8Burrremoval(see17.3),

4.1.9Certification(seeSection19),

4.1.10ASTMspecificationdesignationandyearofissue,4.1.11Enduse,

1.3Thefollowingprecautionarystatementpertainsonlytothetestmethodportionofthisspecification:Thisstandarddoesnotpurporttoaddressallthesafetyconcerns,ifany,associ-atedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.

1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesaremathemati-calconversionsofthevaluesininch-poundunitstoSIunits.1.5Thetextofthisspecificationcontainsnotesandfoot-notesthatprovideexplanatorymaterial.Suchnotesandfoot-notes,excludingthoseintablesandfigures,donotcontainanymandatoryrequirements.2.ReferencedDocuments2.1ASTMStandards:

ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteel,andRelatedAlloys,andisthedirectresponsibilityofSubcommitteeA01.09onCarbonSteelTubularProducts.

CurrenteditionapprovedMar.10,2001.PublishedMay2001.OriginallypublishedasA501–64.LastpreviouseditionA501–99.

1AnnualBookofASTMStandards,Vol01.01.AnnualBookofASTMStandards,Vol01.03.4AnnualBookofASTMStandards,Vol01.05.5AvailablefromAutomotiveIndustryActionGroup,26200LahserRoad,Suite200,Southfield,MI48034.

32Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.

1

4.1.12Specialrequirements,and4.1.13Barcoding(see20.3).

5.Process

5.1Thesteelshallbemadebyoneormoreofthefollowingprocesses:open-hearth,basic-oxygen,orelectric-furnace.5.2Whensteelsofdifferentgradesaresequentiallystrandcast,thesteelproducershallidentifytheresultanttransitionmaterialandremoveitusinganestablishedprocedurethatpositivelyseparatesthegrades.

6.Manufacture

6.1Thetubingshallbemadebyoneofthefollowingprocesses:seamless;furnace-buttwelding(continuousweld-ing);orelectric-resistanceweldingfollowedbyreheatingthroughoutthecrosssectionandhotformingbyareducingorshapingprocess,orboth.

7.HeatAnalysis

7.1EachheatanalysisshallconformtotherequirementsspecifiedinTable1forheatanalysis.

8.ProductAnalysis

8.1ThetubingshallbecapableofconformingtotherequirementsspecifiedinTable1forproductanalysis.

8.2Ifproductanalysesaremade,theyshallbemadeusingtestspecimenstakenfromtwolengthsoftubingfromeachlotof500lengths,orfractionthereof,ortwopiecesofflat-rolledstockfromeachlotofacorrespondingquantityofflat-rolledstock.MethodsandpracticesrelatingtochemicalanalysisshallbeinaccordancewithTestMethods,Practices,andTerminol-ogyA751.SuchproductanalysesshallconformtotherequirementsspecifiedinTable1forproductanalysis.

8.3Ifbothproductanalysesrepresentingalotfailtoconformtothespecifiedrequirements,thelotshallberejected.8.4Ifonlyoneproductanalysisrepresentingalotfailstoconformtothespecifiedrequirements,productanalysesshallbemadeusingtwoadditionaltestspecimenstakenfromthelot.Bothadditionalproductanalysesshallconformtothespecifiedrequirementsorthelotshallberejected.

9.TensileRequirements

9.1Thematerial,asrepresentedbythetestspecimen,shallconformtotherequirementsastotensilepropertiesprescribedinTable2.

9.2Theyieldstrengthcorrespondingtoapermanentoffsetof0.2%ofthegagelengthofthespecimenortoatotalextensionof0.5%ofthegagelengthunderloadshallbedetermined.

TABLE1ChemicalRequirements

Composition,%

Element

HeatProductanalysisanalysisCarbon,max

0.260.30Phosphorus,max0.0350.045Sulfur,max

0.0350.045Copper,whencoppersteelisspecified,min

0.20

0.18

TABLE2TensileRequirements

Tensilestrength,min,psi(MPa)58000(400)Yieldstrength,min,psi(MPa)

36000(250)

Elongationin2in.(50.8mm),min,%

23

10.BendTest

10.1Thebendtestshallbemadeonsquareorrectangulartubingmanufacturedinaccordancewiththisspecification.10.2Thebendtestspecimenshallbetakenlongitudinallyfromthetubing,andshallrepresentthefullwallthicknessofmaterial.Itshallbepermissibleforthesidesofthebendtesttohavetheircornersroundedouttoaradiusof1⁄16in.(1.59mm)maximum.

10.3Thebendtestspecimenshallstandbeingbentcoldthrough180°,withoutcrackingontheoutsideofthebentportion,toaninsidediameterwhichshallhavearelationtothethicknessofthespecimenasprescribedinTable3.

11.Dimensions

11.1SquareStructuralTubing—Theoutsidedimensions(acrosstheflats),theweightperfoot,andthecalculatednominalwallthicknessofcommonsizesofsquarestructuraltubingincludedinthisspecificationarelistedinTable4.11.2RectangularStructuralTubing—Theoutsidedimen-sions(acrosstheflats),theweightperfoot,andthecalculatednominalwallthicknessofcommonsizesofrectangularstruc-turaltubingincludedinthisspecificationarelistedinTable5.11.3RoundStructuralTubing—TheNPSandoutsidediam-eterdimensions,theweightperfoot,andthecalculatednominalwallthicknessofcommonsizesofroundstructuraltubingincludedinthisspecificationarelistedinTable6.11.4SpecialShapeStructuralTubing—Thedimensionsandtolerancesofspecialshapestructuraltubingareavailablebyinquiryandnegotiationwiththemanufacturer.

11.5OtherSizes—Thedimensionaltolerancesforhot-formedweldedandseamlessstructuraltubingmanufacturedinaccordancewiththerequirementsofthisspecification,butwithordereddimensionsotherthanthoselistedinTable4,Table5,andTable6,shallbeconsistentwiththosegiveninthisspecificationforsimilarsizesandtypeofproduct.

12.PermissibleVariationsinDimensionsofSquare,

Round,Rectangular,andSpecialShapeStructuralTubing

12.1OutsideDimensions:

12.1.1RoundStructuralTubing—Forroundhot-formedstructuraltubingNPS2andover,theoutsidediametershallnotvarymorethan61%fromthespecifiedoutsidediameter.ForNPS11⁄2andunder,theoutsidediametershallnotvarymorethan1⁄64in.(0.40mm)overormorethan1⁄32in.(0.79mm)underthespecifiedoutsidediameter.

TABLE3BendTestRequirements

ThicknessofMaterial,in.(mm)

RatioofBendDiametertoSpecimenThickness

3⁄4(19.0)andunder

1⁄2Over3⁄4to1(19.0to25.4),incl

1

TABLE4DimensionsofCommonSizesofSquareStructural

Tubing

SizeGiveninOutsideWeightperCalculatedNominalDimensionsAcrossFlat

UnitLength,WallThickness,

Sides,in.(mm)

lb/ft(kg/m)

in.(mm)

1by1

1.09(1.62)0.095(2.41)(25.4by25.4)1.41(2.10)0.133(3.38)2by2

2.69(4.00)0.110(2.79)(50.8by50.8)

3.04(4.52)0.125(3.18)3.65(5.44)0.154(3.91)4.31(6.41)0.188

(4.78)

21⁄2by21⁄24.32(6.43)0.141(3.58)(63.5by63.5)5.59(8.32)0.188(4.78)7.10(10.56)0.250(6.35)3by3

5.78(8.60)0.156(3.96)(76.2by76.2)6.86(10.21)0.188(4.78)8.80(13.09)0.250(6.35)31⁄2by31⁄26.88(10.24)0.156(3.96)(88.9by88.9)

8.14(12.11)0.188(4.78)10.50(15.62)0.250(6.35)12.69(18.88)0.312

(7.92)

4by4

9.31(13.85)0.188(4.78)(101.6by101.6)

12.02(17.89)0.250(6.35)14.52(21.61)0.312(7.92)16.84(25.06)0.375(9.52)20.88(31.07)0.500(12.70)5by5

11.86(17.65)0.188(4.78)(127.0by127.0)

15.42(22.94)0.250(6.35)18.77(27.93)0.312(7.92)21.94(32.65)0.375(9.52)27.68(41.19)0.500(12.70)6by6

14.41(21.44)0.188(4.78)(152.4by152.4)

18.82(28.00)0.250(6.35)23.02(34.25)0.312(7.92)27.04(40.28)0.375(9.52)34.48(51.31)0.500(12.70)7by7

16.85(25.07)0.188(4.78)(177.8by177.8)

22.04(32.80)0.250(6.35)26.99(39.16)0.312(7.92)31.73(47.21)0.375(9.52)40.55(60.34)0.500(12.70)8by8

25.44(37.85)0.250(6.35)(203.2by203.2)

31.24(46.49)0.312(7.92)36.83(54.80)0.375(9.52)47.35(70.46)0.500(12.70)56.98(84.79)0.625(15.88)65.73(97.81)0.750(19.05)10by10

32.23(47.96)0.250(6.35)(254.0by254.0)

39.74(59.13)0.312(7.92)47.03(69.98)0.375(9.52)60.95(90.69)0.500(12.70)73.98(110.08)0.625(15.88)86.13(128.16)0.750(19.05)107.79

(160.39)

1.000(25.40)

12.1.2Square,Rectangular,andSpecialShapeStructuralTubing—Theoutsidedimensions,measuredacrosstheflatsatpositionsatleast2in.(50.8mm)fromtheendsofthetubing,shallnotvaryfromthespecifiedoutsidedimensionsbymorethantheapplicableamountgiveninTable7,whichincludesanallowanceforconvexityorconcavity.

12.2Weight—Theweightofthestructuraltubingshallbenotmorethan3.5%underitstheoreticalweight,ascalculated

TABLE5DimensionsofCommonSizesofRectangular

StructuralTubing

SizeGiveninOutsideWeightperCalculatedNominalWallDimensionsAcrossFlat

UnitLength,Thickness,in.(mm)

Sides,in.(mm)lb/ft(kg/m)3by2

4.32(6.43)0.141(3.58)(76.2by50.8)

5.59(8.32)0.188(4.78)7.10(10.56)0.250(6.35)4by2

5.78(8.60)0.156(3.96)(101.6by50.8)

6.86(10.21)0.188(4.78)8.80(13.09)0.250(6.35)4by3

6.88(10.24)0.156(3.96)(101.6by76.2)

8.14(12.11)0.188(4.78)10.50(15.62)0.250(6.35)12.69(18.88)0.312(7.92)5by3

9.31(13.85)0.188(4.78)(127.0by76.2)

12.02(17.89)0.250(6.35)14.52(21.61)0.312(7.92)16.84(25.06)0.375(9.52)6by3

10.58(15.74)0.188(4.78)(152.4by76.2)

13.72(20.42)0.250(6.35)16.65(24.78)0.312(7.92)19.39

(28.85)

0.375(9.52)6by4

11.86(17.65)0.188(4.78)(152.4by101.6)

15.42(22.94)0.250(6.35)18.77(27.93)0.312(7.92)21.94(32.65)0.375(9.52)27.68(41.19)0.500(12.70)7by5

14.41(21.44)0.188(4.78)(177.8by127.0)

18.82(28.00)0.250(6.35)23.02(34.25)0.312(7.92)27.04(40.28)0.375(9.52)34.48(51.31)0.500(12.70)8by4

14.41(21.44)0.188(4.78)(203.2by101.6)

18.82(28.00)0.250(6.35)23.02(34.25)0.312(7.92)27.04(40.28)0.375(9.52)34.48(51.31)0.500(12.70)8by6

16.85(25.07)0.188(4.78)(203.2by152.4)

22.04(32.80)0.250(6.35)26.99(39.16)0.312(7.92)31.73(47.21)0.375(9.52)40.55(60.34)0.500(12.70)10by6

25.44(37.85)0.250(6.35)(254.0by152.4)

31.24(46.49)0.312(7.92)36.83(54.80)0.375(9.52)47.35

(70.46)

0.500

(12.70)

usingitslengthandtheapplicableweightperunitlengthgiveninTable4,Table5,orTable6.

12.3Length—Structuraltubingiscommonlyproducedinrandomlengthsof16to22ft.(4.9to6.7m)or32to44ft.(9.8to13.4m),inmultiplelengths,andinspecificlengths.Whenspecificlengthsareordered,thepermissiblevariationsinlengthshallbeasgiveninTable8.

12.4Straightness—Thepermissiblevariationforstraight-nessofstructuraltubingshallbe1⁄8in.timesthenumberoffeet(10.4mmtimesthenumberofmetres)oftotallengthdividedby5.

12.5SquarenessofSides—Forperpendicularandrectangu-lartubing,adjacentsidesshallbesquare(90°),withapermis-siblevariationof62°.

TABLE6DimensionsofCommonSizesofRoundStructural

Tubing

NPSOutsideDiameter,WeightperCalculatedNominalDesigna-in.(mm)UnitLength,WallThickness,in.

tor

lb/ft(kg/m)(mm)1⁄20.840(21.3)0.85(1.27)0.109(2.77)0.840(21.3)1.09(1.62)0.147(3.73)3⁄

41.050(26.7)1.13(1.69)0.113(2.87)1.050(26.7)1.47(2.20)0.154(3.91)1

1.315(33.4)1.34(2.00)0.104(2.64)1.315(33.4)1.68(2.50)0.133(3.38)1.315(33.4)2.17(3.24)0.179(4.55)11⁄41.660(42.2)1.82(2.71)0.110(2.79)1.660(42.2)2.27(3.39)0.140(3.56)1.660(42.2)3.00(4.47)0.191(4.85)11⁄21.900(48.3)2.17(3.25)0.114(2.90)1.900(48.3)2.72(4.05)0.145(3.68)1.900(48.3)3.63(5.41)0.200(5.08)2

2.375(60.3)2.91(4.33)0.121(3.07)2.375(60.3)3.65(5.44)0.154(3.91)2.375(60.3)5.02(7.48)0.218(5.54)21⁄22.875(73.0)4.53(6.74)0.156(3.96)2.875(73.0)5.40(8.04)0.188(4.78)2.875(73.0)5.79(8.63)0.203(5.16)2.875(73.0)7.66(11.41)0.276(7.01)3

3.500(88.9)5.57(8.29)0.156(3.96)3.500(88.9)6.65(9.92)0.188(4.78)3.500(88.9)7.58(11.29)0.216(5.49)3.500(88.9)10.25(15.27)0.300(7.62)31⁄24.000(101.6)6.40(9.53)0.156(3.96)4.000(101.6)7.65(11.41)0.188(4.78)4.000(101.6)9.11(13.57)0.226(5.74)4.000(101.6)12.50(18.63)0.318(8.08)4

4.500(114.3)7.24(10.78)0.156(3.96)4.500(114.3)8.66(12.91)0.188(4.78)4.500(114.3)10.01(14.91)0.219(5.56)4.500(114.3)10.79(16.07)0.237(6.02)4.500(114.3)14.98(22.32)0.337(8.56)5

5.563(141.3)14.62(21.77)0.258(6.55)5.563(141.3)20.78(30.97)0.375(9.53)5.563(141.3)38.55(57.43)0.750(19.05)6

6.625(168.3)18.97(28.26)0.280(7.11)6.625(168.3)28.57(42.56)0.432(10.97)6.625(168.3)53.16(79.22)0.864(21.95)8

8.625(219.1)28.55(42.55)0.322(8.18)8.625(219.1)43.39(64.64)0.500(12.70)8.625(219.1)72.42(107.92)0.875(22.23)10

10.750(273.0)40.48(60.31)0.365(9.27)10.750(273.0)54.74(81.55)0.500(12.70)10.750(273.0)104.13(155.15)1.000(25.40)12

12.750(323.8)49.56(73.88)0.375(9.53)12.750(323.8)65.42(97.46)0.500(12.70)12.750(323.8)125.49(186.97)1.000(25.40)1414.000(355.6)54.57(81.33)0.375(9.53)14.000(355.6)72.09(107.39)0.500(12.70)1616.000(406.4)62.58(93.27)0.375(9.53)16.000(406.4)82.77(123.30)0.500(12.70)1818.000(457.2)70.59(105.16)0.375(9.53)18.000(457.2)93.45(139.15)0.500(12.70)2020.000(508.0)78.60(117.15)0.375(9.53)20.000(508.0)104.13(155.12)0.500(12.70)24

24.000(609.6)94.62(141.12)0.375(9.53)24.000(609.6)

125.49(187.06)

0.500(12.70)

12.6RadiusofCorners—Forsquareandrectangularstruc-turaltubing,theradiusofeachoutsidecornerofthesectionshallnotexceedthreetimesthecalculatednominalwallthickness.

12.7Twist—Forsquare,rectangular,andspecialshapestructuraltubing,thepermissiblevariationsintwistshallbeasgiveninTable9.Twistshallbedeterminedbyholdingoneendofthetubingdownonaflatsurfaceplate,measuringtheheight

TABLE7PermissibleVariationsinOutsideFlatDimensionsforSquare,Rectangular,andSpecialShapeStructuralTubing

SpecifiedOutsideLargeFlat

PermissibleVariationsOverand

Dimension,in.(mm)

Under

SpecifiedOutsideFlat

Dimensions,Ain.(mm)21⁄2(63.5)andunder

0.020(0.51)Over21⁄2to31⁄2(63.5to88.9),incl0.025(0.64)Over31⁄2to51⁄2(88.9to139.7),incl0.030(0.76)

Over51⁄2(139.7)

0.01timeslargeflatdimension

AThepermissiblevariationsincludeallowancesforconvexityandconcavity.

TABLE8PermissibleVariationsinLengthforSpecificLengths

ofStructuralTubing

22ft(6.7m)andUnderOver22to44ft(6.7to

13.4m),incl

Over

UnderOverUnderPermissiblevariationsin1⁄21⁄43⁄41⁄4length

(12.7)

(6.4)

(19.0)

(6.4)

forspecificlengths,in.(mm)

TABLE9PermissibleVariationsinTwistforSquare,Rectangular,andSpecialShapeStructuralTubing

SpecifiedOutsideLargeMaximumPermissible

FlatDimension,in.(mm)

VariationsinTwistper3ftofLength(TwistperMetreof

Length)

in.

mm11⁄2(38.1)andunder

0.0501.39Over11⁄2to21⁄2(38.1to63.5),incl0.0621.72Over21⁄2to4(63.5to101.6),incl0.0752.09Over4to6(101.6to152.4),incl0.0872.42Over6to8(152.4to203.2),incl0.1002.78Over8(203.2)

0.112

3.11

thateachcorneronthebottomsideofthetubingextendsabovethesurfaceplateneartheoppositeendofthetubing,andcalculatingthetwist(thedifferenceinthemeasuredheightsofsuchcorners),exceptthatforheaviersectionsitshallbepermissibletouseasuitablemeasuringdevicetodeterminetwist.Twistmeasurementsshallnotbetakenwithin2in.(50.8mm)oftheendsofthetubing.

13.NumberofTests

13.1Onetensiontestasspecifiedin15.2shallbemadefromalengthoftubingrepresentingeachlot.

13.2ThebendtestasspecifiedinSection10shallbemadeononelengthofsquareorrectangulartubingrepresentingeachlot.

13.3Theterm“lot”shallapplytoalltubesofthesamespecifiedsizethatareproducedfromthesameheatofsteel.14.Retests

14.1IftheresultsofthemechanicaltestsrepresentinganylotfailtoconformtotheapplicablerequirementsspecifiedinSections9and10,thelotshallberejectedorretestedusingadditionaltubingofdoubletheoriginalnumberfromthelot.Thelotshallbeacceptableiftheresultsofallsuchretestsrepresentingthelotconformtothespecifiedrequirements.

14.2Ifoneorbothoftheretestsspecifiedin14.1failtoconformtotheapplicablerequirementsspecifiedinSections9and10,thelotshallberejectedor,subsequenttothemanu-facturerheattreating,reworking,orotherwiseeliminatingtheconditionresponsibleforthefailure,thelotshallbetreatedasanewlotandtestedaccordingly.

15.TestMethod

15.1TensiontestspecimensshallconformtotheapplicablerequirementsofTestMethodsandDefinitionsA370,AnnexA2.

15.2Tensiontestspecimensshallbefull-sizelongitudinaltestspecimensorlongitudinalstriptestspecimens.Forweldedtubing,anylongitudinalstriptestspecimensshallbetakenfromalocationatleast90°fromtheweldandshallbepreparedwithoutflatteninginthegagelength.Longitudinalstriptestspecimensshallhaveallburrsremoved.Tensiontestspecimensshallnotcontainsurfaceimperfectionsthatwouldinterferewithproperdeterminationofthetensileproperties.

15.3Theyieldstrengthcorrespondingtoanoffsetof0.2%ofthegagelengthortoatotalextensionunderloadof0.5%ofthegagelengthshallbedetermined.

16.GalvanizedCoatings

16.1Forstructuraltubingrequiredtobehot-dippedgalva-nized,suchcoatingshallcomplywiththerequirementscon-tainedinSpecificationA53/A53M,exceptthatthemanufac-turershalladditionallyhavetheoptionofdeterminingthecoatingweightusingonlythevaluesobtainedforthecoatingontheoutsidesurfaceofthetubing.

17.Inspection

17.1Alltubingshallbeinspectedattheplaceofmanufac-turetoensureconformancewiththerequirementsofthisspecification.

17.2Thestructuraltubingshallbefreeofdefectsandshallhaveacommerciallysmoothfinish.

17.2.1Surfaceimperfectionsshallbeclassedasdefectswhenoneormoreofthefollowingconditionsexist:

17.2.1.1Thedepthoftheimperfectionsexceeds15%ofthecalculatednominalwallthickness.

17.2.1.2Theimperfectionsmateriallyaffecttheappearanceofthestructuraltubing.

17.2.1.3Atanylocation,thelengthoftheimperfections,measuredinthetransversedirection,incombinationwiththeirdepthmateriallyreducethetotalcrosssectionalareaofthestructuraltubing.

17.2.2Itshallbepermissiblefordefectshavingadepthnotinexcessof331⁄3%ofthecalculatednominalwallthicknesstoberepairedbywelding,subjecttothefollowingconditions:17.2.2.1Thedefectshallbecompletelyremovedbychip-pingorgrindingtosoundmetal,

17.2.2.2Therepairweldshallbemadeusingalow-hydrogenweldingprocess,and

17.2.2.3Theprojectingweldmetalshallberemovedtoproduceaworkmanlikefinish.

17.3Unlessotherwisespecifiedinthepurchaseorder,structuraltubingshallbefurnishedwithsquarecutends.The

burrshallbeheldtoaminimum.Whensospecifiedinthepurchaseorder,theburrshallberemovedontheoutsidediameter,insidediameter,orboth.

18.Rejection

18.1Itshallbepermissibleforthepurchasertoinspecttubingreceivedfromthemanufacturerandrejectanytubingthatdoesnotmeettherequirementsofthisspecification,basedupontheinspectionandtestmethodsoutlinedherein.Thepurchasershallnotifythemanufacturerofanytubingthathasbeenrejected,andthedispositionofsuchtubingshallbesubjecttoagreementbetweenthemanufacturerandthepur-chaser.

18.2Itshallbepermissibleforthepurchasertosetasideanytubingthatisfoundinfabricationorinstallationwithinthescopeofthisspecificationtobeunsuitablefortheintendedenduse,basedontherequirementsofthisspecification.Thepurchasershallnotifythemanufacturerofanytubingthathasbeensetaside.Suchtubingshallbesubjecttomutualinvesti-gationastothenatureandseverityofthedeficiencyandtheformingorinstallationconditions,orboth,involved.Thedispositionofsuchtubingshallbesubjecttoagreementbetweenthemanufacturerandthepurchaser.

19.Certification

19.1Whenspecifiedinthepurchaseorderorcontract,themanufacturershallfurnishtothepurchaseracertificateofcompliancestatingthattheproductwasmanufactured,sampled,tested,andinspectedinaccordancewiththisspeci-ficationandanyotherrequirementsdesignatedinthepurchaseorderorcontract,andwasfoundtomeetallsuchrequirements.Certificatesofcomplianceshallincludethespecificationnum-berandyearofissue.

19.2Whenspecifiedinthepurchaseorderorcontract,themanufacturershallfurnishtothepurchasertestreportsfortheproductshippedthatcontaintheheatanalysesandtheresultsofthetensiontestsrequiredbythisspecificationandthepurchaseorderorcontract.Testreportsshallincludethespecificationnumberandyearofissue.

19.3Asignatureornotarizationisnotrequiredoncertifi-catesofcomplianceortestreports;however,thedocumentsshallclearlyidentifytheorganizationsubmittingthem.Not-withstandingtheabsenceofasignature,theorganizationsubmittingthedocumentisresponsibleforitscontent.

19.4Acertificateofcomplianceortestreportprintedfrom,orusedinelectronicformfrom,anelectronicdatainterchange(EDI)shallberegardedashavingthesamevalidityasacounterpartprintedinthecertifyingorganization’sfacility.ThecontentoftheEDItransmitteddocumentshallconformtoanyexistingEDIagreementbetweenthepurchaserandthemanu-facturer.

20.ProductMarking

20.1Exceptasallowedby20.2,eachlengthofstructuraltubingshallbelegiblymarkedbyrolling,die-stamping,inkprinting,orpaintstencilingtoshowthefollowinginformation:manufacturer’sname,brand,ortrademark;size;andthespecificationdesignation(yearofissuenotrequired).

20.2Forstructuraltubinghavingaspecifiedoutsidediam-eterorlargeflatdimensionlessthan2in.(50.8mm),itshallbepermissiblefortheinformationlistedin20.1tobemarkedonatagsecurelyattachedtoeachbundle.

20.3BarCoding—Inadditiontotherequirementsin20.1and20.2,themanufacturershallhavetheoptionofusingbarcodingasasupplementaryidentificationmethod.Whenaspecificbarcodingsystemisspecifiedinthepurchaseorder,thatsystemshallbeused.

NOTE2—Intheabsenceofanotherbarcodingsystembeingspecifiedin

thepurchaseorder,itisrecommendedthatbarcodingbeconsistentwithAIAGStandardB-1.

21.Packaging,Marking,andLoading

21.1Whenspecifiedinthepurchaseorder,packaging,marking,andloadingshallbeinaccordancewithPracticesA700.22.Keywords

22.1steeltube;structuralsteeltubing

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