Does anyone know of where I can get small piece of sheet metal In Hua Hin  for replacing the flame deflector on my BBQ please. Many thanks Cal

is there a homepro, Thaiwatsadu or another hardware company there as they have sheet metal you can purchase. 

exact, see HOMEPRO, the store sells barbecues. But bring the defective part or a photo.
Also, kind of store, which sells everything, on the Petchkasem, after the 94, direction Bluport, show the room, but you also have to dig.
See on the roads, in the "all at 20bt". Sometimes we have nice surprises.

Try Hua-Hin Steel supplies which is located on the R.H.S. of the Phetchkasem road about 2kms past soi 126 going towards Pranburi. They have all forms of steel in stock, also 6m lengths of 'plastic' sheeting which I used to cover my car port and sunbathing areas - which they delivered for free for me. They will also cut to length for you for free. Hope this helps.