Waterproof casing pipeline crossing the railway, roads, streets, etc. flexible waterproof casing, to prevent pipes being crushed by the load of the latest offer flexible waterproof casing, 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 external wing ring, as well as the internal ring gear and the like. Waterproof casing wall bushing known as flexible waterproof casing method, wall pipe. Near standard flexible waterproof casing is provided under the national standard in visually observable or measurable tool to place the product is consistent with the national standard, the most easily deceived users, inside the tube to make a material body fall, general and GB No difference in the appearance of flexible waterproof casing, such as your initial purchase, distinguished national standard and nearly standard weight flexible waterproof casing according to Atlas. Flexible waterproof casing method | flexible waterproof casing | Serco supply materials provided by Serco Gongyi City Water Supply Materials Co., Ltd. Serco Gongyi City Water Supply Materials Co., Ltd. (www.gyxjbcq.com/) strong, credible, in Zhengzhou, Henan Province of valve industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Serco water into the brilliant material and you work for a better future!