ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS G 4901:1999
Corrosion-resisting and heat-resisting superalloy bars
1999
12
JISh 2022 Std.
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. The major points for this revision are as follows ...