I was having the same issue with weights of F&D heads until I used the links posted above by Hakkik. Thanks
Wrote a excel and verified cals by Solidworks2010.
Here is the but.....
I assign the material in SW2010 as 316L(SG:8.0) which worked out the same as the excel, but if you are using material such as C22(SG:8.69) which has a density which is nearly 10% heavier then 316l grade on a large vessel need to consider the difference in density.
Any Suggestions??
Niall