Established in 1988

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Black Oxide Coating

Black Oxide Coating

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Black Oxide Coating is a process which provides a conversion coating on iron which changes the surface of the material to a naturally occurring black iron oxide. It oxide a pleasing aesthetic finish as well as a minimal change in surface dimensions , .0005" (5 millionths of an inch). Though the black oxide does provide some corrosion protection by itself it is necessary to put a protective oil on this finish to keep it from rusting.
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Our buyer received a letter from your company regarding an order I put in for some 3” stainless steel U-Bolts. I just wanted to thank you for the kind letter and let you know that your U-Bolts have been completely invaluable to us. We use them in the manufacturing process of an extremely sensitive product. Our previous U-bolts were zinc plated, therefore they became rusted too easily and risked the quality of the product. We hadn’t been able to find another U-bolt supplier with our specific size requirements (without going custom) until I came across your website! We are very grateful for the quality product you have sent us. We will definitely continue to use your company and the services provided.

– C.