extracting info from one cell based on info from other cells

Hi,
I want to be able to retreive information based on values in other cells.
I'm calculating m2 surface for different types of pipes and steel.
Attached there's an example.

If I type HEB in column C, 100 in Column D I want it to give me the number 0,567 automatically from column L in column G.

Is that possible? This will apply to houndres of various types so it would save me a lot of time.

It will be easier if you have TYPE down ROWS and DIM across COLUMNS

See attached:

in G6


=INDEX($O$7:$Z$100,MATCH($C6,$N$7:$N$100,0),MATCH($D6,$O$6:$Z$6,0))

Perfect!! Thank you :D