Hatch Cover Chain Wheel, installed between hawse pipe and chain stopper, is a kind of marine chain roller which is used to avoid the friction between anchor chain and hawse pipe. CB/T 290-95 Hatch Cover Chain Wheel for hawse pipe is mainly made of casting steel and carbon fiber steel. Its surface is clean and smooth. There is no any defects such as airhole, crack which may affect chain wheel’s strength. The roller is flexible to turn. It is anti-rust as well. Our marine chain wheels are approved by quality inspection center. If you’re interested in our products, please feel free to contact us.