配方类型：	METALS AND THEIR TREATMENT
配方说明：	Boiler Plate Welding Flux (U.S. Patent 2,748,040)
配方组成：	Manganese Dioxide/5.0-8.5 Aluminum Oxide/42.0-64.3 Silica/23.0-34.2 Soda Ash/0.0-7.9 Potassium Carbonate/0.0-7.9 Calcium Oxide/4.7-5.1 Titanium Dioxide/3.0-3.6

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