[国外标准] BS EN 12680-3-2003 Founding — Ultrasonic examination — Part 3 Spheroidal graphite cast iron castings
[国外标准] BS EN 12680-2-2003 Founding Ultrasonic exam Steel castings for highly stressed
[国外标准] BS EN 12680-1-2003 Founding Ultrasonic exam Steel castings for general
[国外标准] EN 1563-1997 Founding - Spheroidal graphite cast irons
[国外标准] EN 1561-1997 Founding - Grey cast irons
[国外标准] BS EN 1559-3-1997 Founding Technical conditions of delivery Part 3. Additional requirements for iron
[国外标准] BS EN 12454-1998 Founding-Visual examination of surface discontinuities-Steal sand castings