... protected) For concrete, bricks, Slate, sand lime stone,sandstone, marble, granite, fire proof stone and fire clay.SS21-(sintered, segment Edge) Concrete, Bricks ... , Ceramic, State, stone, ReinforcedConcrete, concrete paving and Concrete roofing tilesLC69- (laser, Segment Edge) Stone, Concrete cement pipe and Cements slabs.TW22- (Sintered ...