This standard specifies spheroidal graphite cast iron (ductile cast iron) valves (hereinafter referred to as ductile cast iron valves) used in ships' steam pipes, air pipes, fuel oil pipes, lubricating oil pipes, fresh water pipes, etc.
JIS F 7505:2006 Referenced Document
JIS B 0205-1 ISO general purpose metric screw threads -- Part 1: Basic profile
JIS B 0205-2 ISO general purpose metric screw threads -- Part 2: General plan
JIS B 0205-3 ISO general purpose metric screw threads -- Part 3: Selected sizes for screws, bolts and nuts
JIS B 0205-4 ISO general purpose metric screw threads -- Part 4: Basic dimensions