Water pipe trench Weifang professional wholesaler Pipe Co., Ltd. Weifang Yu-hao. Our factory supply various uses customers' needs. Size of the water pipe trench products. Water pipe trench as raw material to manufacture ductile iron, wall with epoxy powder, such fittings in use, both durable properties of steel, there are plastic pipe corrosion. Use the water pipe trench for media delivery no nutrition, more healthy. Sales trench pipe pieces Product Specifications Model: DN25mm-DN400mm my factory grooved fittings, flanges, clamps, three, four, various angles of elbows, reducers and other fittings in pipe connections having installation method is simple, easy to use method to maintain the advantage. My company has a full set of perfect groove tube production and quality inspection systems, products strictly in accordance with ISO9001 international quality management system of production, all through a number of testing and certification authority of the professional sector. www.wfyhgy.com