... .Heat treatment:normalizing,quenching & tempering(if necessary).6.Surface treatment:shot blast surface or polishing surface.7. Machining:CNC,NC,common ... range: from 0.1kg up to 60.0kgs9. Representative product:stainless steel tube fittings,stainless steel balls,stainless steel nut,stainless steel hardware parts,stainless steel polishing parts.