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Standard Specification for Seamless and Welded Titanium and Titanium Alloy Condenser and Heat Exchanger Tubes with Enhanced Surface for Improved Heat Transfer
Automaticky preložený názov:
Štandardné špecifikácie pre bezšvové a zvárané Titanium a Titanium Alloy chladič a výmenník tepla s Enhanced povrch pre lepšiu Heat Transfer
NORMA vydaná dňa 1.3.2012
Označenie normy: ASTM B891-12
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.3.2012
Kód tovaru: NS-8645
Počet strán: 8
Približná hmotnosť: 24 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
condenser, enhanced tube, evaporator, finned tube, heat exchanger, heat transfer, integral fins, ribbed tube, seamless, titanium, titanium alloy, tube, U-bend, welded, Condenser and heat exchanger systems--titanium/titanium alloy, Integral fins, Seamless/welded titanium tube, Titanium alloy pipe/tube--specifications, Titanium (Ti)/alloys--specifications, Welded Ti/Ti alloy--specifications, ICS Number Code 27.060.30 (Boilers and heat exchangers)
1. Scope | ||||||||
1.1 This specification covers seamless and welded titanium and titanium alloy tubing on which at least part of the external or internal surface has been enhanced by cold forming for improved heat transfer. The tubes are used in surface condensers, evaporators, heat exchangers, coils, and similar heat transfer apparatus in diameters up to and including 1 in. (25.4 mm). The base tube wall thickness is typically at least 0.049 in. average, but lighter gauge may be negotiated with the manufacturer. 1.2 Tubing purchased to this specification will typically be inserted through close-fitting holes in tubesheets, baffles, or support plates spaced along the tube length such as defined in the Tubular Exchanger Manufacturer’s Association (TEMA) Standard. The tube ends will also be expanded, and may then be welded. Tube may also be bent to form U-tubes or be coiled or otherwise formed, although tight radii may require unenhanced length for the bends. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 The following precautionary statement pertains to the test method portion only: Section 8, 9, 10 and S1 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. |
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2. Referenced Documents | ||||||||
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