Prosteel Professional Design - Welded, Machine Parts and Assemblies Contact ProSteel Professional Design. Phone: 828.252.4675 Business Name*Name* First Last Phone*Email* Enter Email Confirm Email Project Description*File Upload - PDF ONLYAccepted file types: pdf. DUNS: 963571596 CAGE: 6RHD7 REGISTERED WITH ORCA NAICS CODES 332XXX, 333XXX, 336XXX