DR 99528 CP
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Electric resistance welded steel air heater tubes
30-06-2017
15-11-1999
Proposes methods of manufacture, steelmaking process and chemical composition for tubes in the as-welded condition. It also specifies tolerances, number and selection of samples for tests, and the expanding and flattening tests.
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