Landee Flange Co., Ltd.. is a leading manufacturer and provider of diversified Valves, Flanges, Pipes, Pipe Fittings, Fasteners and so on in a variety of materials, configurations, sizes and pressure classes. Our reputation and success is built on providing fast, reliable service at price that you can afford. All of our factory operations are certified to the International Standard Organization (ISO) 9001 standard for design and manufacturing control.. is a leading manufacturer and provider of diversified Valves, Flanges, Pipes, Pipe Fittings, Fasteners and so on in a variety of materials, configurations, sizes and pressure classes. Our reputation and success is built on providing fast, reliable service at price that you can afford. All of our factory operations are certified to the International Standard Organization (ISO) 9001 standard for design and manufacturing control.