- GBPI 20 KN UNIVERSAL TEST MACHINEView MoreThis Series machine can be applied to test lots of materials in rubber tensile elongation, compression, tear, big size peel (can 90 degrees and180 degrees) and other mid-force mechanical test( 5KN,10KN,20KN,optional ) , such as tires, belt, shoes, plastic, film, acrylic,FRP, ABS, EVA, PU, aluminum-plastic pipe, composite materials,waterproof materials, fibers, textiles, wire and cable, paper, gold foil,ribbons, thread, spring, wood, medicine packaging materials, tapes etc.