Structural design and mechanical performance test of densely drilled glass fiber reinforced plastics pipelines

► Reinforcing effect the fibers with 45° winding angle of is stronger than 65°. ► Unsaturated polyester resin 196# is better in improving mechanical properties. ► As to the size of holes drilled on the side wall, 20 mm is better than 10 mm. ► The holes shall be straightly distributed other than helically distributed. ► As expected, GFRP pipelines can be destroyed under moderate conditions.