... control 2.leadtime guarantee investment casting handle with stainless steel and carbon steel:1.Quality standard: ISO9001:20002 ... to clients' drawings or the mould. Item DescriptionProcessProcess design; Mould manufacture; Wax pattern made; Module combining; Shell ... Argon arc welding; Sand blasting; Clearing and finishing; Heat treatment; Correction and inspectionMaterialSS:303,304,304L,316,316L,CF8 ...