Great Plains Stainless, Inc. Your worldwide source for specialty stainless steel. Since 1983, Great Plains Stainless, Inc. has been a distributor of stainless steel pipe, tube, flanges, and fittings in alloys 304H, 309, 310, 317L, 321, 347H, 410, 446 - 2, 904L, and Duplex 2205. We have also proven to be the industry leader in specialty steel distribution. We acknowledge that you have your choice of materials distributors and therefore we strive to provide you, the customer, with the highest level of service possible. We appreciate your business and look forward to the opportunity to serve your company.