ASTM A1012-10 (R2021) pdf free download.Standard Specification for Seamless and Welded Ferritic, Austenitic and Duplex Alloy Steel Condenser and Heat Exchanger Tubes With Integral Fins.
1.1 This specification describes seamless and welded ferritic, austenitic and duplex alloy steel tubing on which the external or internal surface, or both, has been modified by a cold forming process to produce an integral enhanced surface for improved heat transfer. The tubes are used in surface condensers, evaporators, heat exchangers and similar heat transfer apparatus in unfinned end diameters up to and including 1 in. (25.4 mm). Boiler tubes are excluded.
1.2 The values stated in inch-pound units arc to be regarded as the standard. The values given in parentheses are for information only.
4. Ordering Information
4.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this specification. Such requirements may include, but are not limited to. the following:
4.1.1 ASTM designation and year of issue (this specification):
4.1.2 ASTM designation and year of issue (plain tube specification):
4.1.3 Welded or seamless:
4.1.4 Alloy grade and UNS designation;
4.1.5 Dimensions; plain tube outside diameter, plain tube wall thickness (average or minimum specified), length and location of unenhanced surfaces and the total tube length. Configuration of enhanced surfaces (fins per unit length, fin height, wall thickness under fin, rib pitch, rib height, etc.) shall be as agreed upon between the manufacturer and purchaser (see Fig.1 and Fig. 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 Requirements
5.1 Material furnished under this specification shall conform to the applicable requirements of Specification A1016/ A1O16M unless otherwise provided herein.
5.2 Enhanced (integrally finned) sections of the tube shall he produced by cold forming the tubing in such a manner that exterior fins, wall under the fin and inside ribs (when specified) are homogeneous.
5.3 Tubes described by this specification shall he furnished with unenhanced (plain) ends.
5.4 Enhanced sections of the tube are normally supplied in the “as finned” temper (cold worked condition produced by the enhancing operation). The unenhanced sections of the tube shall he in the annealed condition and shall be suitable for rolling—in operations.
6. Materials and 1%Ianufacture
6.1 The integrally enhanced (finned) tubes shall he manufactured from seamless, welded, or welded/cold worked plain tubes that conform to one of the following ASTM specitIcations: A213/A213M, A249/A249M. A268/A268M, A269, A688/A688M, A789/A789M, A803/A803M.ASTM A1012 pdf download.