JIS G 7225:2003
承壓用焊接鋼管.交貨技術條件.第3部分:規定低溫特性的電阻焊接和感應焊接非合金鋼管和合金鋼管(ISO規范)
Welded steel tubes for pressure purposes -- Technical delivery conditions -- Part 3: Electric resistance and induction welded unalloyed and alloyed steel tubes with specified low temperature properties (ISO specifications)