Needle scaler also commonly known as a needle gun or pneumatic needle descaler . It’s a pneumatic tool that uses multiple hardened steel needles to strike and chip away rust, scale, paint, slag, and other contaminants from metal surfaces. Welcome to Congo Trading Parts. Located in the heart of Pointe Noire, we specialize in providing high-quality heavy equipment and machine spare parts. Our commitment to excellence ensures that you find everything you need under one roof. Whether you’re in const