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 and integral enhanced surface for improved heat transfer. The integrally enhanced (finned) tubes shall be manufactured from seamless, welded, or welded/cold worked plain tubes that conform to the specified requirements. The tube shall conform to the requirements for tensile properties prescribed in the governing plain tube specification. Pneumatic tests, eddy-current tests, air underwater pressure tests, pressure differential tests, and hydrostatic tests shall be made in accordance with the requirements specified.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

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 are to be regarded as the standard. The values given in parentheses are for information only.

1.3 The following precautionary statement pertains to the test method portion only, Section 12, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

Keywords

alloy steel tube; austenitic stainless steel; carbon steel tube; condenser tube; duplex stainless steel; feedwater heater tubes; ferritic/austenitic stainless steel; ferritic stainless steel; heat exchanger tube; high temperature applications; seamless steel tube; stainless steel tube; steel tube; superheater tube; temperature service applicationshigh; welded steel tube; Austenitic steel--specifications; Condenser and heat exchanger systems--steel; Duplex alloy steel tube; Evaporators/evaporation--specifications; Ferritic steel tube--specifications; Seamless steel tube--specifications; Surface condensers; Unfinned end diameters; Welded steel tube--specifications;

ICS Code

ICS Number Code 77.140.01 (Iron and steel products in general)

Citing ASTM Standards

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