We produce the cast iron pipe and fittings according to ASTM A888 standard, pipes are produced by centrifugal casting line, and fitting with sand casting or machine molding process. They are mainly used in drainpipe. The following benefits: flat and straight, even pipe thickness , high strength and density, high smoothness on the inner and outer surface of the wall, easy installation, easy maintain, long life, helpful to environment, fireproofing and no noise. For the coating we usually painting black color with antirust paint, also we can according to your demands, epoxy painting,or expoxy powder or others.