ASTM_A_1012_-_00.PDF

Designation:A 1012 00Standard Specification forSeamless and Welded Ferritic,Austenitic and Duplex AlloySteel Condenser and Heat Exchanger Tubes With IntegralFins1This standard is issued under the fixed designation A 1012;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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.1.Scope1.1 This specification describes seamless and welded fer-ritic,austenitic and duplex alloy steel tubing on which theexternal or internal surface,or both,has been modified by acold forming process to produce an integral enhanced surfacefor improved heat transfer.The tubes are used in surfacecondensers,evaporators,heat exchangers and similar heattransfer apparatus in unfinned end diameters up to and includ-ing 1 in.(25.4 mm).Boiler tubes are excluded.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.1.3 The following precautionary statement pertains to thetest method portion only:Section 12 of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:A 213/A 213M Specification for Seamless Ferritic and Aus-tenitic Alloy-Steel Boiler,Superheater,and Heat-Exchanger Tubes2A 249/A 249M Specification for Welded Austenitic SteelBoiler,Superheater,Heat-Exchanger and CondenserTubes2A 268/A 268M Specification for Seamless and Welded Fer-ritic and Martensitic Stainless Steel Tubing for GeneralService2A 269/A 269M Specification for Seamless andWelded Aus-tenitic Stainless Steel Tubing for General Service2A 450/A 450M Specification for General Requirements forCarbon,Ferritic Alloy,and Austenitic Alloy Steel Tubes2A 688/A 688M Specification for Welded Austenitic Stain-less Steel Feedwater Heater Tubes2A 789/A 789M Specification for Seamless and Welded Fer-ritic/Austenitic Stainless Steel Tubing for General Service2A 803/A 803M Specification for Welded Ferritic StainlessSteel Feedwater Heater Tubes2A 941 Terminology Relating to Steel,Stainless Steel,Re-lated Alloys,and Ferroalloys2E 1316 Terminology for Nondestructive Examinations33.Terminology3.1 DefinitionsFor definition of general terms used in thisspecification,refer to Specification A 941.3.2 Symbols(Integral Fin Tube Nomenclature):D=outside diameter of unenhanced sectionDi=inside diameter of unenhanced sectiondr=root diameter of enhanced section outside of tubedo=outside diameter of enhanced sectiondi=inside diameter of enhanced sectionW=wall thickness of unenhanced sectionWf=wall thickness of enhanced sectionFh=height of finenhanced section outside of tubeFm=mean fin thicknessenhanced section outside of tubeP=mean rib pitchenhanced section inside of tubeRh=height of ribenhanced section inside of tubeHa=rib helix angleenhanced section inside of tubeTt=transition taper4.Ordering Information4.1 It is the responsibility of the purchaser to specify all1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.10 on Tubing.Current edition approved Sept.10,2000.Published November 2000.2Annual Book of ASTM Standards,Vol 01.01.3Annual Book of ASTM Standards,Vol 03.03.FIG.1 Outside Enhancement Only1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.requirements that are necessary for material ordered under thisspecification.Such requirements may include,but are notlimited to,the following:4.1.1 ASTM designation and year of issue(this specifica-tion);4.1.2 ASTM designation and year of issue(plain tubespecification);4.1.3 Welded or seamless;4.1.4 Alloy grade and UNS designation;4.1.5 Dimensions;plain tube outside diameter,plain tubewall thickness(average or minimum specified),length andlocation of unenhanced surfaces and the total tube length.Configuration of enhanced surfaces(fins per unit length,finheight,wall thickness under fin,rib pitch,rib height,etc.)shallbe as agreed upon between the manufacturer and purchaser(see Figs.1 and 2).4.1.6 Temper(as-finned or stress relief annealed);4.1.7 Quantity;4.1.8 Packaging;4.1.9 Nondestructive tests;4.1.10 Customer inspection;4.1.11 Mill test report;4.1.12 Certification.5.General Requirements5.1 Material furnished under this specification shall con-form to the applicable requirements of Specification A 450/A 450M unless otherwise provided herein.5.2 Enhanced(integrally finned)sections of the tube shallbe produced by cold forming the tubing in such a manner thatexterior fins,wall under the fin and inside ribs(when specified)are homogeneo