Founded by accomplished sheet metal fabrication industry experts. Approved Sheet metal (ASM) is an American job shop manufacturer of custom precision prototype and low volume production sheet metal fabricated parts.When it comes to sheet metal fab, precision is key. At ASM, we offer custom metal fabrication services to meet the exact specifications of your 3D Model and/or print. Our highly experienced team can work with a variety of materials, including steel, aluminum, and stainless steel, to create high-quality sheet metal parts for a range of industries and applications.