Waterproof casing pipeline crossing the railway, roads, streets, etc., in order to prevent the pipe being crushed by the load, and in the pipeline externally set a protective sleeve. Waterproof casing is divided into rigid waterproof casing and flexible waterproof casing. Rigid waterproof casing is a steel pipe plus wing ring; flexible waterproof casing in addition to the external wing ring flexible waterproof casing installation, as well as the internal ring gear and the like. Also known as waterproof casing wall bushing, wall pipe. Flexible waterproof casing basic measurement methods and weight formula almost rigid waterproof casing, flexible cannula sleeve length is 300 base weight flexible waterproof casing the latest offer, then extended the length of each flexible waterproof casing 100mm factory direct sales increase the number of weight, usually in a waterproof casing Atlas 02s404 flexible waterproof casing, can be found in weight. Often purchase flexible waterproof casing buyers should be aware that we use is based on the customer's needs may be different from the corresponding flexible waterproof casing prices. But you can rest assured that our prices, we ensure the quality of the premise, the lowest price you can do the same industry. Flexible waterproof casing installation, Serco supply material (certified), flexible waterproof casing is provided by Serco Gongyi City Water Supply Materials Co., Ltd. Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) is Zhengzhou, gate leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Serco leadership material in the water with the staff warmly welcome all inquiries negotiations to create Serco supply material a better future.