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Test equipment|Test specimens|Glass fibres|Composite materials|Elbows (pipes)|Reinforced materials|Epoxy resins|Tensile strength|Straight couplings|Pipe coatings|Butt joints|Flanges|Certification (approval)|Thermosetting polymers|Polymers|Chemical technology equipment|Pipe junctions|Tensile testing|Dimensional tolerances|Surface defects|Dimensions|Compression loading|Welding|Thickness|Peeling tests|Welded joints|Adhesion tests|Elastic constants|Inspection|Laminates|Shear testing|Marking|Performance testing|Polyesters|Bend couplings|Design calculations|Pipe fittings|Loading|Coatings|Cyclic loading|Surface texture|Mechanical testing|Shear strength|Pipes|Adhesives|Pipe couplings|Flanged fittings|Plastics|Pipe tees|Maximum load|Visual inspection (testing)|Safe working load|Socket flanges