... material:stainless steel ,carbon steel 2) craft: lost wax process 3) mirror electro-polish Specification1, investment casting ,precision casting2, carbon ... ItemsSizePremiumOutline Dimention1000*620*380up to 100weight kgs0.001-600.10 to 1.5Min.Wall Thickness0.55 to 103,Surface ... weight per mold1) Break-off witness (same alloys)2) 0.2-0.50mm high witness3) Flush grind6, Heat treatmentHeat treat are ...