Impro Industries USA, Inc.

Diamond Bar, CA 91765


About Impro Industries USA, Inc.

Custom manufacturer of investment castings, sand castings and precision machined components. Materials worked with include stainless steel, low alloy steel, carbon steel, titanium, superalloy, aluminum, copper, structural steel, spring steel, and more.

Product Summary


21660 East Copley Drive
Suite 100
Diamond Bar, CA 91765
(909) 396-6525
(909) 396-1677

More Info on Impro Industries USA, Inc.

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Impro is a leading global manufacturer of high-precision, high-complexity and mission-critical casting and machined components for OEM customers in diverse end markets. Our vertically integrated business model encompassing investment casting, sand casting, precision machining, heat treatment, surface treatment, testing, and certification, enables us to provide one-stop solutions to customers for their precision component needs.

Impro manufacturing plants are strategically located in China, Mexico, Turkey and Germany, serving customers regionally and internationally.

With the breadth of capabilities, we produce investment castings with complex design criteria from more than 100 ferrous and non-ferrous alloys, ranging from a few oz. to 220 lbs. Our iron sand casting process includes both green sand and resin sand casting, producing castings from a few lbs up to several tons in ductile iron, gray iron, and compacted graphite iron. Impro precision machining capabilities include CNC turning, Swiss-type turning, multi-spindle turning, milling, 3-, 4- and 5- axis machining, grinding (centerless, cylindrical, ID, and OD), deep-hole drilling, honing, deburring, and more. Materials that we work with include stainless steel, alloy steel, carbon steel, titanium, superalloys, aluminum, and more. From early design involvement to volume production, we provide value-added engineering support throughout the life cycle of the products. We are reputed for supplying high-quality precision casting and machining parts to the automotive, aerospace, construction, and mining equipment, agriculture equipment, high horsepower engine, energy, hydraulic equipment, medical, and recreational boat/vehicle industries. Many of our customers are well-recognized global leaders in their respective industries, including Bosch, Caterpillar, Cummins, Honeywell, HUSCO and Parker-Hannifin.

We have multiple warehouse locations in North America and Europe to provide JIT/Kanban deliveries and other supply chain services. Please call us or email us. Our account managers and sales engineers are eager to support your project needs.

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