AS B52.3-1931
[ Superseded ]
Tables of pipe flanges (for land use) - Working steam pressures above 450 lb. per sq. in. and up to 600 lb. per sq. in.
standard by Standards Australia, 01/01/1931
AS B10-1931
[ Superseded ]
Cylinders for the storage and transport of permanent gases (air, hydrogen, etc.)
standard by Standards Australia, 01/01/1931