General description 40pcs Plastic Welding Rods made of high-quality PP (Polypropylene) are designed for use with plastic welding guns or hot air guns. These rods measure 250mm in length and are ideal for various applications, including car bumpers, battery shells, and plastic water tanks. Technical specifications Material: PP (Polypropylene) Length: 250mm High wear resistance: seven times stronger than steel High adhesion resistance: minimal adhesion to other materials Good low temperature resistance: remains flexible at -196°C (liquefied nitrogen) Corrosion resistance: stable chemical properties against various corrosive media and organic solvents Usage PP welding rods are suitable for a variety of applications, including: Car bumpers Car front and rear baffles Car battery shells Motorcycle inner plates PP plastic water tanks PP pipes