1、Designation:A 539 99Standard Specification forElectric-Resistance-Welded Coiled Steel Tubing for Gas andFuel Oil Lines1This standard is issued under the fixed designation A 539;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification covers one grade o
3、f electric-resistance-welded coiled steel tubing 238in.(60.3 mm)andunder in outside diameter and 0.035 to 0.125 in.(0.9 to 3.2mm),inclusive,in nominal wall thickness.The tubing isintended for conveyance of gas and fuel oil.1.2 The values stated in inch-pound units are to be regardedas the standard.T
4、he SI values given are for information only.2.Referenced Documents2.1 ASTM Standards:A 450/A 450M Specification for General Requirements forCarbon,Ferritic Alloy,and Austenitic Alloy Steel Tubes2A 751 Test Methods,Practices,and Terminology forChemical Analysis of Steel Products3A 941 Terminology Rel
5、ating to Steel,Stainless Steel,Re-lated Alloys,and Ferroalloys23.Terminology3.1 DefinitionsFor definitions of terms used in this speci-fication,refer to Terminology A 941.4.Ordering Information4.1 Orders for material to this specification should includethe following,as required,to describe the desir
6、ed materialadequately:4.1.1 Quantity(number of feet),4.1.2 Name of material(electric-resistance-welded tubing),4.1.3 Tubing size(outside diameter and nominal wall thick-ness),4.1.4 Product analysis(see 7.1),4.1.5 Specification designation and year of issue,4.1.6 End use of material,4.1.7 Test pressu
7、re,if higher than minimum specified(see12.4),and4.1.8 Bar coding(see 13.2).5.General Requirements for Delivery5.1 Material furnished to this specification shall conform tothe applicable requirements of Specification A 450/A 450M,unless otherwise provided herein.6.Chemical Composition6.1 The steel sh
8、all conform to the requirements prescribedin Table 1.Methods and practices relating to chemical analysisshall be in accordance with Test Methods,Practices,andTerminology A 751.6.2 Supplying an alloy grade of steel that specificallyrequires the addition of any element other than those listed inTable
9、1 is not permitted.7.Product Analysis7.1 When specified in the purchase order,the manufacturershall determine the product analysis using a test specimentaken from one coil in each lot of 250 coils or fraction thereofof the same size of tubing produced from the same heat ofsteel.Such product analyses
10、 shall conform to the requirementsprescribed in Table 1.7.2 If the original product analysis representing a lot fails toconform to the specified requirements,product analyses for theelements that failed to conform shall be made using testspecimens taken from two additional coils in the lot.If either
11、retest fails to conform to the specified requirements,the lotshall be rejected or the remaining coils in the lot shall be testedindividually,with any nonconforming coils being rejected.8.Tensile Requirements8.1 The tubing shall conform to the requirements as totensile properties prescribed in Table
12、2.1This specification is under the jurisdiction of ASTM Committee A-1 on Steel,Stainless Steel,and Related Alloys and is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Mar.10,1999.Published May 1999.Originallypublished as A 539 65 T.Last pre
13、vious edition A 539 96.2Annual Book of ASTM Standards,Vol 01.01.3Annual Book of ASTM Standards,Vol 01.03.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.9.Height of Flash9.1 The inside welding flash need not be removed.Theheight of flash
14、shall not exceed the specified wall thickness or332in.(2.4 mm),whichever is smaller.10.Dimensions and Permissible Variations10.1 The outside diameter shall not vary more than 60.007in.(60.2 mm)from the specified outside diameter.10.2 The minimum wall thickness at any point shall be notmore than 10%u
15、nder the specified wall thickness.11.Workmanship,Finish,and Appearance11.1 Tubing shall be free of imperfections in excess of 10%of the specified wall thickness and shall have a workmanlikefinish.12.Number of Tests12.1 One longitudinal tension test shall be made using a testspecimen taken from one c
16、oil in each lot of 250 coils orfraction thereof of the same size of tubing.12.2 A flattening test shall be made on both crop ends cutfrom each coil of tubing,with the weld located alternately at 0and 90 from the line of direction of force.12.3 Each tube shall be tested by the nondestructive electricmethod.12.4 Each coil of tubing shall be pressure tested at the millata a gage pressure level of at least 150 psi(1000 kPa)for aminimum of 10 S.13.Product Marking13.1 In addition to the marking specif
