Custom Formed Spring & Metal Component Spring Manufacturer: Katy Spring & Mfg., Inc. is an ISO certified, full service custom metal forming spring manufacturer company. From compression springs, extension springs, torsion springs, and flat springs, along with other metal components, they come in endless varieties of shapes, sizes, and material types. To help you keep your projects on schedule, our professional staff will assist you with material selection, load and rate calculations, cost effectiveness and much more! Our goal is to satisfy our customers and their unique project requirements. Search our vast inventory of stock from our springs catalog, or call us with your design requirements.