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U.S. Bellows, Inc., the expansion joint division of Piping Technology & Products, Inc., designed and fabricated two 48-inch, triple-layered fabric expansion joints for a power plant in Columbia to be used in its exhaust system. The expansion joints were fabricated with three layers: outer, center and inner. The outer layers consisted of PTFE, 25% glass filled, coated fiberglass, center layers of ceramic fiberglass and the inner layers of aluminum-coated fiberglass. These expansion joints were designed at a pressure of 27” of WC and a temperature of 700°F.