A concrete or cement block is a large brick which is used in construction and it is made from the cast concrete, aggregate, Portland cement, sand, gravel. Concrete block often produced with empty centres to decrease the weight and usually it use for the load bearing walls of buildings when it reinforced with the concrete columns and tie beams. Because of the drab and unattractive appearance of concrete block; it can be decorate with the paint, siding, stucco etc. It is ideal fit for the area where moisture and sanitation issues are more attentive. The above listed companies of Qatar are manufacturer of Concrete bock.