AMH manufactures GTS Energy System Boiler grate castings from heat resistant stainless steel. These include Side plates, Full Lap, Half Lap and End Plates. Our replacement grates are made in accordance to ASTM 297, and we can offer several material grades varying from HC to HN, depending on the operation temperature of your boiler. We manufacture these castings in the lost wax process, enabling us to maintain tight tolerances and smooth surface finishes. We also manufacture several other styles of grates for various boilers.