Heat Treatment Rack | Custom Furnace Fixture Rack Manufacturer – FH® Alloy Custom Heat Treatment Racks for High-Temperature Furnace Applications FH® Alloy, a brand of Wuxi Junteng Fanghu Alloy Technology Co., Ltd., manufactures custom heat treatment racks for demanding industrial furnace applications. Designed for high-temperature service, our heat treatment racks are used to support, position, and separate workpieces during heat treatment cycles. With an open-frame structure