A 787-01 电阻焊接有金属涂层的碳钢机械管的标准规范(Standard Specification for Electric-Resistance-Wel

Designation:A787–01Standard Specification forElectric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing1This standard is issued under thefixed designation A787;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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1This specification covers round,square,rectangular,andspecial shape,electric-resistance-welded mechanical tubing,either zinc-coated(galvanized)after welding or produced fromaluminum-coated,zinc-coated(galvanized),zinc-iron alloy-coated(galvannealed),or55%aluminum-zinc alloy-coatedsteel sheet.Tubing for use as electrical conduit(EMT)orintermediate metallic conduit(IMC)is not covered by thisspecification.1.2This specification covers mechanical tubing with out-side diameters or maximum outside dimensions ranging from 1⁄2to8in.(12.7to203.2mm)and wall thickness from0.028 to0.134in.(0.71to3.40mm).1.3Sizes outside the ranges listed above may be orderedprovided all other requirements of the specification are met.1.4The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.2.Referenced Documents2.1ASTM Standards:A90/A90M Test Method for Weight[Mass]of Coating onIron and Steel Articles with Zinc or Zinc-Alloy Coatings2A370Test Methods and Definitions for Mechanical Testingof Steel Products3A428/A428M Test Method for Weight of Coating onAluminum-Coated Iron or Steel Articles2A463/A463M Specification for Steel Sheet,Aluminum-Coated by the Hot-Dip Process2A653/A653M Specification for Steel Sheet,Zinc-Coated(Galvanized)or Zinc-Iron Alloy-Coated(Galvannealed)by the Hot-Dip Process2A792/A792M Specification for Steel Sheet,55%Aluminum-Zinc Alloy-Coated by the Hot-Dip Process2A924/A924M Specification for General Requirements forSteel Sheet,Metallic-Coated by the Hot-Dip Process2B6Specification for Zinc43.Classification3.1The types of tubing covered by this specification are:TypeNumberCodeLettersDescription1AWAC electric-resistance-welded aluminum-coated carbon steel mechanical tubing 2AWG electric-resistance-welded galvanized car-bon steel mechanical tubing3AWPG electric-resistance-welded carbon steelmechanical tubing,post-hot dipped gal-vanized4AWGA electric-resistance-welded carbon steelmechanical tubing,zinc-iron alloy-coated(galvannealed)5AWGZ electric-resistance-welded carbon steelmechanical tubing,55%aluminum-zincalloy-coated4.Ordering Information4.1The ordered wall thickness of the tubing shall be the total of the base metal and the metallic coating.4.2Orders for material under this specification shall in-clude the following:4.2.1Quantity(feet,metres,or number of lengths),4.2.2Type,code letters,and description(Sections1and3), 4.2.3Applicable ASTM designation number(s),4.2.4Coating designation and type of coating,4.2.5Chemically treated or not chemically treated raw material,4.2.6Oiled or dry(Section16),4.2.7Extra smooth coating(if required),4.2.8Customer application,including fabrication,4.2.9Flash condition(7.1),4.2.10Steel grade designation(Sections5and9),4.2.11Report of chemical analysis if required(Sections10 and11),4.2.12Shape(round,square,rectangular,or special),4.2.12.1Dimensions:round—any two of the following: inside diameter,outside diameter,or wall thickness;square or rectangular—outside dimension,wall thickness,and corner radii,if required.(See12.1and13.1and13.2.)1This specification is under the jurisdiction of ASTM Committee A01on Steel,Stainless Steel,and Related Alloys and is the direct responsibility of SubcommitteeA01.09on Carbon Steel Tubular Products.Current edition approved March10,2001.Published May2001.Originallypublished as A787–st previous edition A787–00.2Annual Book of ASTM Standards,V ol01.06.3Annual Book of ASTM Standards,V ol01.03.4Annual Book of ASTM Standards,V ol02.04.1Copyright©ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959,United States.4.2.13Length:round tubing—mill lengths or definite cut lengths(see12.2);square and rectangular tubing—mill cut lengths and specified length(see13.4).4.2.14Squareness of cut:round tubing,if required(see 12.3);square and rectangular tubing,if required(see13.7), 4.2.15Burrs removed,if required(see15.2),4.2.16Special packaging(Section19),4.2.17Customer specification number,if applicable,4.2.18Special requirements,4.2.19Special marking(Section18),and4.2.20Recoating of outside diameter weld and heat-affected area,on precoated steel,if required.5.Process5.1The steel shall be made from any process.5.1.1If a specific type of melting is required by the purchaser,it shall be stated on the purchase order.5.1.2The primary melting may incorporate separate degas-sing or refining and may be followed by secondary melting, using electroslag remelting or vacuum remelting.If secondary melting is employed,the heat shall be defined as all of the ingots remelted from a single primary heat.5.1.3Steel may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The producer shall remove the transition material by an established procedure that positively separates the grades. 5.2For tubing produced from precoated steel sheet,the composition of the coating shall comply with the applicable specification.5.2.1Specification A463/A463M—Coating designation for aluminum coated-sheet.5.2.2Specification A653/A653M—Coating designation for galvanized and galvannealed steel sheet.5.2.3Specification A792/A792M—Coating designation for 55%aluminum-zinc alloy-coated steel sheet.5.2.4Other grades of coated steel sheet,as listed in Table1 and Table2,may be used as the precoated material for the steel tubing upon agreement between the manufacturer and the purchaser.Such steel sheet shall meet the requirements of Specification A463/A463M,A653/A653M,A792/A792M, and A924/A924M,except for the chemical requirements.6.Manufacture6.1Tubes shall be made by the electric-resistance welding process and shall be made from hot or cold-rolled precoated steel.6.2Special manufacturing practices allow for post-hot dipped galvanizing of welded tubing.If this product is desired all sections of this specification will apply except Table3.Wall thickness tolerances shall be determined by agreement between the producer and purchaser.7.Flash Conditions7.1Theflash conditions under which tubing may be furnished are as follows:Theflash shall be removed from the outside diameter of tubing covered by this specification. Tubing furnished to this specification may have the following conditions of weldingflash on the inside diameter.7.1.1Flash-In—All tubing in which the inside diameter weldingflash does not exceed the wall thickness or3⁄32in.(2.4 mm),whichever is less.7.1.2Flash Controlled to0.010in.(0.254mm), Maximum—Tubing in which the height of the remaining weldingflash is controlled so as not to exceed0.010in.This condition is available in over0.750in.(19.05mm)outside diameter and gages consistent with Table4.7.1.3Flash Controlled to0.005in.(0.127mm), Maximum—When the inside diameterflash is controlled to 0.005in.(0.127mm)maximum in tubing produced to outside diameter and wall thickness,inside diameter and wall thick-ness,or outside diameter and inside diameter tolerances,the remaining inside diameterflash,if any,is part of the applicable inside diameter tolerance.This controlledflash is available in 0.750in.(19.05mm)outside diameter or greater.7.2Tubes shall be furnished in the following shapes,as specified by the purchaser:round,square,rectangular,or special shapes(as negotiated).7.3Recoating of the outside diameter weld-heat-affected area on precoated steel tubing may be performed at the manufacture’s option,if not specifically requested by the purchaser.8.Surface Finish8.1Special surfacefinishes as may be required for specific applications shall be provided in the purchase order by agreement between the producer and purchaser.TABLE1Chemical Requirements for Low-Carbon Steels A,BGrade Designation CComposition,%Carbon ManganesePhos-phorus,maxSulfur,maxMT10100.05to0.150.30to0.600.0350.035 MT10150.10to0.200.30to0.600.0350.035 MTX10150.10to0.200.60to0.900.0350.035 MT10200.15to0.250.30to0.600.0350.035 MTX10200.15to0.250.70to1.000.0350.035A Rimmed or capped steels that may be used for the above grades are characterized by a lack of uniformity in their chemical composition,and for this reason product analysis is not technologically appropriate unless misapplication is clearly indicated.B Chemistry represents heat analysis.Product analysis,except for rimmed or capped steel,is to be in accordance with usual practice as shown in Table5.C The letters MT indicate mechanical tubing.TABLE2Chemical Requirements for Other Carbon Steels A GradeDesigna-tionComposition,%Carbon ManganesePhos-phorus,maxSulfur,max 10080.10max0.500.0350.035 10100.08to0.130.30to0.600.0350.035 10150.12to0.180.30to0.600.0350.035 10160.12to0.190.60to0.900.0350.035 10170.14to0.210.30to0.600.0350.035 10180.14to0.210.60to0.900.0350.035 10190.14to0.210.70to1.000.0350.035 10210.17to0.240.60to0.900.0350.035A Chemistry represents heat analysis.Product analysis,except for rimmed or capped steel,is to be in accordance with usual practice as shown in Table5.9.Base Metal Chemical Composition9.1The chemical composition of the sheet steel base metal shall conform to the requirements of Table 1.9.2Copper-bearing steel,with 0.20%minimum copper,may be ordered in any of the grades shown in Table 1or Table 2.9.3An analysis of each heat of steel shall be made by the basic steel producer to determine the percentage of the ele-ments specified.The heat analysis,as supplied by the steel melter,shall conform to the requirements of Table 1or Table 2.9.4When a grade is ordered under this specification,supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade in Table 1and Table 2is not permitted.10.Coating Bath Chemical Composition10.1When tubing is produced from precoated sheet steel,the tubing manufacturer shall furnish,upon request,a report stating that the tubing has been manufactured from precoated sheet steel meeting one of the following specifications:A 463/A 463M,A 653/A 653M,A 792/A 792M,and A 924/A 924M.10.2For post-coated tubing the zinc used for coating shall be any grade of zinc conforming to Specification B 6.11.Product Analysis11.1When requested on the purchase order,a product analysis shall be made by the supplier.The number and source of samples for a product analysis shall be based on the individual heat or lot identity of one of the following forms:11.1.1Heat Identity Maintained —One product analysis per heat shall be made on either the flat-rolled stock or tube.11.1.2Heat Identity Not Maintained —One product analysis shall be made from each 2000ft (610m)or fraction thereof for sizes over 3in.(76.2mm)outside diameter,and from each 5000ft (1524m)or fraction thereof for sizes 3in.(76.2mm)outside diameter and under.11.2Samples for product spectrochemical analysis shall be taken in accordance with procedures established with the tube producer and the testing laboratory.The composition thus determined shall correspond to the requirements in Table 1or Table 2and be within the composition tolerances shown in Table 5.11.3If the original test for product analysis fails,retests of two additional samples of flat-rolled stock or tubes shall be made.Both retests for the elements in question shall meet the requirements of Table 1or Table 2,and Table 5,of this specification;otherwise,all remaining material in the heat or lot shall be rejected or,at the option of the producer,each length of flat-rolled stock or tube may be individually tested for acceptance.Any retested material not meeting the requirements of this specification shall be rejected.12.Permissible Variations in Dimensions for RoundTubing 12.1Wall Thickness and Diameter —Wall thickness toler-ances for tubing made from precoated steel are shown in Table 3.All wall thickness tolerances include both the base steel and the coating (inside and outside surfaces).Variations in outside diameter and inside diameter of as-welded tubing made from precoated steel are shown in Table 4.12.2Length —Mechanical tubing is commonly furnished in mill lengths 5ft (1.5m)and l length tolerances are given in Table 6.Definite cut lengths are furnished when specified by the purchaser.Tolerances for definite length round tubing shall be given in Table 7and Table 8.Different types of cutting methods will affect the end cut.12.3Squareness of Cut —When specified,the tolerance for squareness of cut of round mechanical tubing is shown in Table 9.Measurements are made with the use of an “L”square and feeler gage.The contact length of the side leg of the square along the tube will be equal to or greater than the tube outside diameter,but not less than 1in.(25.4mm)nor greater than 4in.(101.6mm).The other leg shall always be equal to or greater than the tube outside diameter.12.4Straightness :12.4.1Post-Coated Tubing —The straightness tolerance for round mechanical tubing shall be 0.030in.(0.762mm)maximum in any 3-ft (0.914-m)length of tubing.The straight-ness tolerance on shorter lengths and on special requirements shall be agreed upon between the purchaser and producer.12.4.2Precoated Tubing —The straightness requirement for post-coated tubing shall be by agreement between the pur-chaser and producer.TABLE 3Wall Thickness Tolerance for Premetallic Coated As-Welded Tubing AOutside Diameter,in.Wall Thickness1⁄2to 1,inclOver 1to 115⁄16,incl Over 115⁄16to 33⁄4,incl Over 33⁄4to 41⁄2,incl Over 41⁄2to 6,incl Over 6to 8,inclWall Thickness Tolerance,in.,Plus and MinusBWG B in.C Plus Minus Plus Minus Plus Minus Plus Minus Plus Minus Plus Minus220.0280.0020.0060.0020.006200.0350.0030.0060.0020.0060.0020.006180.0490.0040.0070.0030.0080.0030.008160.0650.0050.0070.0040.0080.0030.0090.0030.0090.0020.010140.0830.0060.0080.0060.0080.0050.0090.0050.0090.0040.0100.0040.010130.0950.0080.0100.0080.0100.0070.0110.0070.0110.0060.0120.0060.012120.1090.0080.0100.0080.0100.0070.0110.0070.0110.0060.0120.0060.012110.1200.0090.0110.0090.0110.0080.0120.0080.0120.0070.0130.0070.013100.1340.0090.0110.0090.0110.0080.0120.0080.0120.0070.0130.0070.013A Post-hot dipped galvanized welded tubing wall thickness tolerances shall be determined by agreement between the producer and purchaser (6.2).BBirmingham Wire Gage.C1in.=25.4mm.12.5Ovality—The ovality shall be within the tolerances of Table4except when the wall thickness is less than3%of the outside diameter.When the tube wall thickness is less than3% of the tube outside diameter the ovality may be50%greater than the outside diameter tolerances,but the mean diameter (average of maximum outside diameter and minimum outside diameter)shall be within the specified tolerance.13.Permissible Variations in Dimensions of Square andRectangular Tubing13.1Diameter and Wall Thickness—Permissible variations in outside dimensions for square and rectangular tubing are shown in Table10.The wall thickness tolerance is610%of the nominal wall thickness and is measured at the center width of the unwelded sides.13.2Corner Radii—Unless otherwise specified the inside and outside corners of square and rectangular tubing shall be slightly rounded,consistent with the tube wall thickness.A slight radiusflattening can be expected and is more pronouncedTABLE4Diameter Tolerances for Metallic-CoatedRound TubingOutside Diameter Range,in.AWall ThicknessTubing withAny InsideFlashConditionFlash-Controlledto0.005in.Tubing Only B BWG C in.AOutside D,EDiameter,Plus andMinusInside Diameter,Plus and MinusTolerances,in.F1⁄2to11⁄8,incl22to160.028/0.0650.00350.01911⁄8to2,incl22to140.028/0.0830.0050.02111⁄8to2,incl13to100.095/0.1340.0050.0272to21⁄2,incl 2to21⁄2,incl 20to1413to100.035/0.0830.095/0.1340.0060.0060.0230.02921⁄2to3,incl 21⁄2to3,incl 20to1413to100.035/0.0830.095/0.1340.0080.0080.0250.0313to31⁄2,incl 3to31⁄2,incl 20to1413to100.035/0.0830.095/0.1340.0090.0090.0260.03231⁄2to4,incl 31⁄2to4,incl 20to1413to100.035/0.0830.095/0.1340.0100.0100.0270.0334to5,incl 4to5,incl 16to1413to100.065/0.0830.095/0.1340.0200.0200.0370.0435to6,incl 5to6,incl 16to1413to100.065/0.0830.095/0.1340.0200.0200.0370.0436to8,incl14to100.083/0.1340.0250.048A1in.=25.4mm.B Flash controlled to0.005in.maximum tubing is produced to outside diameter tolerances and wall thickness tolerances,inside diameter tolerances and wall thickness tolerances,or outside diameter tolerances and inside diameter toler-ances,in which the height of the remaining inside weldingflash is controlled not to exceed0.005in.Any remainingflash is considered to be part of the applicable inside diameter tolerances.C Birmingham Wire Gage.D Flash-in tubing is produced to outside diameter tolerances and wall thickness tolerances only,and the height of the inside weldingflash does not exceed the wall thickness or3⁄32in.,whichever is less.E Flash controlled to0.010in maximum tubing consists of tubing over5⁄8in. outside diameter which is commonly produced to outside diameter tolerances and wall thickness tolerances only,in which the height of the remaining inside welding flash is controlled not to exceed0.010in.F The ovality shall be within the above tolerances except when the wall thickness is less than3%of the outside diameter,in which cases see12.5.TABLE5Tolerances for Product Analysis for SteelsShown in Table1AElementLimit or Maximumof Specified Range,%Variation,Over theMaximum Limit or Underthe Minimum LimitUndermin,%Overmax,% Carbon to0.15,incl0.020.03over0.15to0.40,incl0.030.04over0.40to0.55,incl0.030.05 Manganese to0.60,incl0.030.03over0.60to1.00incl0.040.04 Phosphorus......0.01 Sulfur......0.01 Copper...0.02...A Individual determinations may vary from the specified heat limits or ranges to the extent shown in this table,except that any element in a heat may not vary both above and below a specified range.TABLE6Mill Cut-Length Tolerances for Round,Square,andRectangular TubingOutside DiameterSize,in.A5ft to Under24ft24ft and Over B 1⁄2to8,incl+1.0,−0.0in.+4.0,−0.0in.A1in.=25.4mm.B Manufacturing practices may limit the length available;therefore,when inquiring,it is essential to describe the product fully.TABLE7Cut Length Tolerances for Lathe-Cut Round Tubing Outside DiameterSize,in.A6in.andUnder12in.12in.andUnder48in.48in.andUnder10ft10ft to24ft,incl B 3⁄8to3,incl61⁄6461⁄3263⁄6461⁄8 Over3to6,incl61⁄3263⁄6461⁄1661⁄8 Over6to8,incl61⁄1661⁄1661⁄861⁄8A1in.=25.4mm.B For each additional10ft or fraction thereof over24ft,an additional allowance should be made of61⁄16in.TABLE8Cut-Length Tolerances for Tubing Punch-,Saw-,orDisc-Cut Round TubingOutside DiameterSize,in.A6in.andunder12in.12in.andunder48in.48in.andunder10ft.10ft.and24ft.incl1⁄8to3incl.61⁄16in.61⁄16in.61⁄8in.61⁄4in. Over3to6,incl.61⁄16in.61⁄16in.61⁄8in.61⁄4in. Over6to8,incl.61⁄16in.61⁄16in.61⁄8in.61⁄4in. A1in.=25.4mmwith heavier-walled tubing.However,the radii of the corners shall be in accordance with Table11.13.3Squareness of Sides—Permissible variation of square-ness of sides shall be determined by the following equation:6b5c30.006in.where:b=tolerance for out-of-square,andc=largest external dimension acrossflats.The squareness of sides is commonly determined by one ofthe following methods:13.3.1A square with two adjustable contact points on each arm is placed on two sides.Afixed feeler gage is then used to measure the maximum distance between the free contact point and the surface of the tubing.13.3.2A square equipped with a direct-reading vernier may be used to determine the angular deviation that,in turn,may be related to distance in inches.13.4Length—Tolerances for mill cut-length square and rectangular tubing shall not exceed the amounts shown in Table 4.Tolerances for definite length square and rectangular tubing shall not exceed the amount shown in Table12.13.5Twist—Twist tolerances are shown in Table13.The twist in square and rectangular tubing may be measured by holding one end of the tubing on a surface plate and noting the height of either corner of the opposite end of the same side above the surface plate.Twist may also be measured by the use of a beveled protractor equipped with a level,and noting the angular deviation on opposite ends,or at any point throughout the length.13.6Straightness—The straightness tolerance is1⁄16in.in 3-ft length(1.7mm/m).13.7Squareness of Cut—If required,the squareness of cut for square and rectangular tubing shall be equal to or less than 0.050in.(1.27mm).Measurements are made with an“L”square and feeler gage.The contact length of the side leg of the square along the tube will be equal to or greater than the largest outside dimension of the tube but shall never be less than1in.TABLE9Tolerance for Squareness of Cut(Either End)WhenSpecified for Round Tubing A,BLength of Tube,ft COutside Diameter,in.B,DUnder11to2,inclOver2to3,inclOver3to4,inclOver4Under10.0060.0080.0100.0150.0201to3,incl0.0080.0100.0150.0200.030 Over3to6,incl0.0100.0150.0200.0250.040 Over6to8,incl0.0150.0200.0250.0300.040A Actual squareness normal to length of tube,not parallelness of both ends.B Values given are“go”value of feeler gage.“No-go”value is0.001in.greater in each case.C1ft=0.3m.D1in.=25.4mm.TABLE10Tolerances,Outside Dimensions A Square andRectangular TubingLargest Nominal Outside Dimension,in.B Wall Thickness,in.B OutsideTolerance at AllSides atCorners,6in.B3⁄16to5⁄8,incl0.020to0.083,incl0.004Over5⁄8to11⁄8,incl0.025to0.134,incl0.005Over11⁄8to11⁄2,incl0.025to0.134,incl0.006Over11⁄2to2,incl0.032to0.134,incl0.008Over2to3,incl0.035to0.134,incl0.010Over3to4,incl0.049to0.134,incl0.020Over4to6,incl0.065to0.134,incl0.020Over6to8,incl0.085to0.134,incl0.025 Convexity and concavity:Tubes having two parallel sides are also measured in the center of theflat sides for convexity and concavity.This tolerance applies to the specific size determined at the corners,and is measured on the following basis:Largest Nominal OutsideDimension,in.Tolerance,Plus and Minus,in. 21⁄2and under0.010Over21⁄2to40.015Over4to80.025A Measured at corners at least2in.from the cut end of the tubing.B1in.=25.4mm.TABLE11Radii of Corners of Electric-Resistance WeldedSquare and Rectangular Tubing ASquares and RectanglesMade from Tubes of theFollowing DiameterRanges,in.BWall Thickness,BWG(in.)BRadius Ranges,in.C1⁄2to11⁄2,incl22(0.028)1⁄32to1⁄161⁄2to21⁄2,incl20(0.035)1⁄32to1⁄161⁄2to4,incl18(0.049)3⁄64to5⁄641⁄2to41⁄8,incl16(0.065)1⁄16to7⁄643⁄4to41⁄8,incl14(0.083)5⁄64to1⁄8Over41⁄8to6,incl14(0.083)3⁄16to5⁄161to41⁄8,incl13(0.095)3⁄32to5⁄32Over41⁄8to6,incl13(0.095)3⁄16to5⁄1611⁄4to4,incl12(0.109)1⁄8to13⁄64Over4to6,incl12(0.109)3⁄16to5⁄1611⁄4to4,incl11(0.120)1⁄8to7⁄32Over4to6,incl11(0.120)7⁄32to7⁄162to4,incl10(0.134)5⁄32to9⁄32Over4to6,incl10(0.134)7⁄32to7⁄16Over6to8,incl10(0.134)3⁄8to5⁄8A This table establishes a standard radius.The purchaser and producer may negotiate special radii.Slight radiusflattening is more pronounced in heavier wall tubing.B1in.=25mm.C These radius tolerances apply to grades of steel covered in Table1.The purchaser and producer may negotiate tolerances on other grades of steel.TABLE12Length Tolerances for Definite Length Square andRectangular TubingLengths,ft A Tolerances,in.B 1to3,incl61⁄16Over3to12,incl63⁄32Over12to20,incl61⁄8Over20to30,incl63⁄16Over30to40,incl61⁄4A1ft=0.3m.B1in.=25.4mm.TABLE13Twist Tolerances Electric-Resistance-Welded for Square and Rectangular Mechanical TubingLargest Dimension,in.A Twist Tolerance in3ft,Bin.A Under1⁄20.032Over1⁄2to11⁄2,incl0.050Over11⁄2to21⁄2,incl0.062Over21⁄2to4,incl0.075Over4to6,incl0.087Over6to8,incl0.100A1in.=25.4mm.B1ft=0.3m.(25.4mm)nor greater than4in.(101.6mm).The other leg will always be equal to or greater than the largest outside dimension of the tube.14.Tubing Sections Other Than Square and Rectangular 14.1In addition to square and rectangular tubing,many producers supply a wide variety of special sections.However, manufacturing practices limit the size range and sections that are available from the various producers.Since the sections are special,they must be inquired on an individual basis giving full details as to dimensions andfinish.15.Workmanship,Finish,and Appearance15.1The tubing shall have a workmanlikefinish.15.2When burrs must be removed from one or both ends, it shall be specified in the purchase order.16.Oiling16.1When specified,tubing shall have a protective coating applied before shipping to retard white rust of the metallic coating on closely nested products and red rust on non-recoated outside diameter weld areas.Should the order specify shipment without a protective coating,the lubricant incidental to manu-facturing will remain and the purchaser will assume responsi-bility for rust in transit and storage.17.Rejection17.1Tubes that fail to meet the requirements of this specification shall be set aside and the producer shall be notified.18.Product Marking18.1Each box,bundle,lift,or piece shall be identified bya tag or stencil with the manufacture’s name or brand,specified size,type,purchaser’s order number,and this specification number.18.2Bar Coding—In addition to the requirements in18.1 bar coding is acceptable as a supplemental identification method.The purchaser may specify in the order a specific bar coding system to be used.19.Packaging19.1On tubing16gage(1.65mm nominal)and lighter,the producer will determine whether or not the tubing will be boxed,crated,cartoned,packaged in secured lifts,or bundled to ensure safe delivery unless otherwise instructed.Tubing heavier than16gage will normally be shipped loose,bundled, or in secured lifts.Special packaging requiring extra operations other than those normally used by a producer must be specified on the order.20.Keywords20.1carbon steel tube;metallic-coated tubing;resistance welded steel tube;steel tube;welded steel tubeASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this ers of this standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed everyfive years and if not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of the responsible technical committee,which you may attend.If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards,at the address shown below.This standard is copyrighted by ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959, United States.Individual reprints(single or multiple copies)of this standard may be obtained by contacting ASTM at the above address or at610-832-9585(phone),610-832-9555(fax),or service@(e-mail);or through the ASTM website().。