ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS G 3221:1988/AMENDMENT 1:2008
Chromium Molybdenum steel forgings for general use (Amendment 1)
2008
3
Std. JISf 2021 V.2
This Japanese Industrial Standard specifies the chromium molybdenum steel forgings hereinafter referred to as the "steel forgings", formed into rod, ring and disc shapes for general use as rods, shafts, cranks, pinions, gears, flanges, rings, wheels, discs, etc.