Jamshedji Construction Machinery Co. Manufactures Industrial Concrete Rammer. Jamshedji Construction Machinery Co. Is an ISO 9001: 2008 certified company offering a wide range of construction machines like pumps, mixers, cutters, rollers, rammers and vibrators. The Industrial Concrete Rammer provides a 700 mm length of compaction shoe and the depth of compaction ranges from 30 cm to 100 cm. The Industrial Concrete Rammer comes with an overall height of 1500 mm.