Primarily sells plastic-coated steel pipes, fire-resistant plastic-coated steel pipes, plastic-coated composite steel pipes, water supply inner and outer plastic-coated steel pipes, flange-connected plastic-coated steel pipes, plastic-lined steel pipes, galvanized steel pipes, well plates, well casings, plastic-coated pipe fittings, hot-dipped galvanized steel pipes, cable conduit pipes, and other pipe materials.