As the series of PVC-U SCH40 piping network products for water supply and drainage with mature technology, pipes and fittings of PVC-U are one of the largest outputs for plastic products in the world, which already had been used widely both at home and abroad. For TIANYAN PVC-U SCH40 water supply piping network, the raw materials and finished products are both match or exceed the relative standards. So TIANYAN PVC-U SCH40 piping network can suit for the equipments of drinking water supply. The piping networks are designed for the uninterrupted supply of water condition from 20°C to 50°C. Under this condition, service life of pipingnetwork can up to 50 years. TIANYAN PVC-U piping network have the full series size and model of fittings for building water supply, which can suit for many kinds of requirement.