1.material :aluminum 2.Independent development mould ability 3.ISO9001:2008 4.Guarantee quality of the products Production details list Product nameBig venturi specifications ... .Steel alloy: aluminum 2.Thickness:1.5mm Process technologyCasting, Machining, Metalworking, Sheet Metal Bending, Surface Treatment, Heat Treatment, Griding, Milling, wire EDM, Linear ...