English to Chinese Tech/Engineering Engineering (general) Welding Equipment

关于焊接设备：

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J. Walter Inc. introduces FILE BELTS that last, for finishing welds, corners, edges and hard to reach places. Three belt widths are available, 1/4”, 1/2” and 3/4”, in two lengths, 18” and 24”.
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A new splicing technique insures strong joints that hold. Gone are the days of broken belt after broken belt. WALTER FILE BELTS fit all standard file belt equipment, whether electric or air powered.
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其中“File Belt”的中文是？