Stainless Tubing & Pipe Products | Stainless Tubular Products Stainless Tubular Products is a stainless steel tubing products supplier with the largest inventory of ornamental tubing. Call us for stainless steel pipe products! Stainless Tubular Products Inc. is a specialty stainless steel tubing and pipe supplier. STP maintains the largest inventory of ornamental tubing in the U.S. Request a quote today!