... tube 1,used in thermoforming and blow molding operations for composites material:bicycle,badminton,etc blowing molding nylon film tube1.width:10mm-700mm ... and gas-seal property;7.used in thermoforming and blow molding operations of composites materials.8.such as forming bicycle, tennis ... racket, baseball bat, hockey stick, mast to carbon glass compositss. blowing molding nylon film tube