GRD-PZD set-on bag weights  are manufactured from extremely tough, non-biodegradable, woven polypropylene fabrics. By utilizing bulk bag manufacturing technology, GRD is able to offer a product that is made to the highest standards at the lowest cost. All of our manufacturers are ISO rated ensuring a consistent, high quality product.These are our most versatile and popular bag weights.GRD-PZD set-on weights are used for typical pipeline installations where the pipeline is welded, field bent and lowered in long sections with weighting installed after the pipeline is in the trench. Unlike concrete coating where extremely heavy pieces of pipe must be transported, welded, and lowered into the trench, GRD-PZD set-on bag weights allow the contractor to install the pipeline quickly and easily with the least amount of equipment. Compared to concrete coating, GRD-PZD set-on bag weights dramatically reduce the amount (and size!) of the equipment required while increasing daily production and reducing overall project costs.