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Ramset powder-actuated tool. A powder-actuated tool (PAT, often generically called a Hilti gun or a Ramset gun after their manufacturing companies) is a type of nail gun used in construction and manufacturing to join materials to hard substrates such as steel and concrete.
Nail guns vary in the length and gauge (thickness) of nails they can drive. Air compressor supplies air into a nail gun. The smallest size of fasteners are normally 23 gauge (0.025 inches or 0.64 millimetres in diameter), commonly called "pin nailers" and generally have only a minimal head.
The gas mixture is cooled to 450 °C in a heat exchanger using water, freshly supplied gases, and other process streams. The ammonia also condenses and is separated in a pressure separator. Unreacted nitrogen and hydrogen are then compressed back to the process by a circulating gas compressor, supplemented with fresh gas, and fed to the reactor ...