Stainless Unlimited

WholesaleWisconsin, United States11-50 Employees

Stainless Unlimited (SUI) began in 1985 as a provider of passivation services for stainless steel piping and components used in crash rescue and fire apparatus. The company then expanded into fabrication, offering engineering support throughout projects and aiming to deliver high-quality finished products with efficient turnaround. It operates two divisions: Stainless Piping Specialists, the manufacturing arm, and Alliance Metals Group, the wholesale distribution arm, which maintains a large on-hand inventory of stainless raw materials and in-house processing capabilities.

Headquartered in Neenah, Wisconsin, the company has grown to more than 100,000 square feet of facilities and continues to update equipment to broaden its manufacturing range. Its customer base includes the fire apparatus, water treatment, and custom stainless fabrication sectors, with a focus on meeting client needs at competitive prices. Alliance Metals Group provides a complete line of stainless steel fittings and, with in-house machining, cutting, and welding, can ship modified fittings or flanges within 24 hours.

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