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Standard Specification for Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes
STANDARD published on 1.10.2009
Designation standards: ASTM A250/A250M-05(2009)
Note: WITHDRAWN
Publication date standards: 1.10.2009
SKU: NS-1763
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
boiler tube, resistance welded steel tube, steel tube, alloy, superheater tube, welded steel tube, Boiler/superheater tubes--specifications, Carbon-molybdenum alloy steel--specifications, Carbon steel tube--specifications, Chromium alloy steel--specifications, Chromium-molybdenum steel--specifications, Class codes (for metals/alloys), Electric-resistance-welded (ERW) steel tube--specifications, Ferritic steel tube--specifications, Resistance-welded steel tube, Superheater tubes--specifications
1. Scope | ||||||
1.1 This specification covers several grades, designated T1, T1a, T1b, T2, T11, T12 and T22, of minimum-wall-thickness, electric-resistance-welded, carbon-molybdenum and chromium-molybdenum alloy-steel, boiler and superheater tubes. 1.2 The tubing sizes and thicknesses usually furnished to this specification are ½ to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.320 in. [0.9 to 8.1 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification. 1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness. 1.4 An optional supplementary requirement is provided for non-destructive examination for certain ASME applications. 1.5 The values stated in either SI units or inch-pound units are to be reaagrded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5.1 Within the text, the SI units are shown in brackets. 1.5.2 The inch-pound units shall apply unless the “M” designation of this specification is specified in the order. |
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2. Referenced Documents | ||||||
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