This Standard specifies the hot-rolled high strength chromium-molybdenum and
chromium-molybdenum-vanadium alloy steel plates for pressure vessels used under
the high-temperature service (hereafter referred to as "steel plates").
NOTE: The International Standards corresponding to this Standard are as fol-
lows.
ISO 9328-1: 2003 Steel flat products for pressure purposes- Technical
delivery conditions -- Part 1: Genera] requirements
ISO 9328-2: 2004 Steel flat products for pressure purposes- Technical
delivery conditions -- Part 2: Non-alloy and ahoy steels with specified
elevated temperature properties(Overall estimation:MOD)
In addition, symbols which denote the degree of correspondence in the
contents between the relevant International Standards and JIS are IDT
(identical), MOD (modified), and NEQ (not equivalent) according to
ISO/IEC Guide 21.