Heat Treatment of dish heads.( HT Graph loading /UNLOADING of dish ends in furnace)1.2200 Inside Dia. x 12 thk.- 022.2400 Inside Dia. x 12 thk.- 023.2100 Inside Dia. x 10 thk.- 024.2800 Inside Dia. x 16 thk.- 02Please send your quotation for heat treatment