Underground pipes are used to traort oil, gas, water, sanitation and protection of cables and transmission lines. Reconstruction and repairing of pipelines economically and technically is very important. Disadvantages of conventional pipes which included high weight, high installation costs, lack of resistance to corrosion and so on lead to developing of filament-wound pipes in the market. Quick installation, no need to excavation, possibility of pipe fixing in situ, low maintenance costs and resistance to corrosion are important benefits of filament-wound pipes. However high production costs and relatively brittle fracture behavior are considered as the disadvantages of these pipes. Mainly, composite design includes selection of appropriate materials, definition of a suitable structure and finding a way to produce it. The high number of variables involved in the design of composite materials makes the design process of them to be very complicated. Moreover, by changing the arrangement of reinforcing layers, special effects can be achieved. Therefore, in this study, a new system for the production of filament-wound composite pipes was developed by using a hybrid of polypropylene (pp) and glass filaments. Alignment of filaments relative to each other, the winding angle and production system were the variables affecting the results. So, in the experimental design, three layered samples, two hybrid samples, a sample with epoxy matrix and a glass reinforced sample with matrix of polypropylene/epoxy was produced and analyzed. Results of void content in the composite samples showed that hybrid samples contain 3.5 percent of void layered samples have void content between 9% to 12%. The void of Epoxy/glass sample is estimated to be 7.3%. By adding pp filament, the void content decreases to 2.3%. The results of bending and compression tests showed that sample whit seven layers compared to five and nine layers proposes better performance. In general, layered arrangement is time consuming, but by using a hybrid arrangement, operator convenience and saving time cab be provided. The results also show that by increasing of fiber volume fraction in the hybrid mode, although some mechanical properties such as bending force, bending stress and hardness improves, but on some mechanical properties such as compression had little effect. Consequently samples with less winding angle were found to have superior mechanical properties. By studying and comparing the samples with epoxy and pp/epoxy matrix, it was found that the properties of the hybrid sample at the angle of 55°, were better than the epoxy sample. It is interesting to know that the conventional glass-epoxy pipe is began to break under compressive loading as the micro cracks develop. The delamination of samples can be seen up to 11 mm of compressive deformation, whereas the crack propagation will be started at 20 mm of compressive deflection as the composite pipe is reinforced by pp filaments. On the whole, the results showed that producing of filament-wound pipes by using hybrid orientation and winding angle of 55° is economically and mechanically the most feasible production method. In the final, pipe stiffness parameter was obtained for all samples and it was revealed that some engineered pipes satisfy the requirements to be buried within the soil. Keywords: Filament winding, Composite pipe, Polypropylene and Glass filament, Epoxy resin, Flexural properties, Pipe stiffness.