A and B Metal Mfg Company Inc United States A And B Metal Mfg Company Inc manufactures tungsten carbide products. Their applications include cane knives, ensilage knives, grain drill discs, horseshoes, plow discs and harrows, crusher rolls, eagle crusher points, feeder plows, muller plows, muller tires, paving machine paddles, post hole augers, road rippers, scarified teeth, dredge pump