ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS G 4901:1999 / Amendment 1:2008
Corrosion-resisting and heat-resisting superalloy bars (Amendment 1)
2008
1
JISh 2022 Std.
Replace "This Japanese Industrial Standard was established in 1970, and revised in 1991. For this time the Standard was subject to revision to meet the technical changes since the previous revision and the International Standards ...