Waterproof casing size, Serco supply material (certified), waterproof casing is provided by Serco Gongyi City Water Supply Materials Limited. Serco Gongyi City Water Supply Materials Co. (www.gyxjbcq.com/) is a specialist in the "PTFE lined rubber joints, standard waterproof casing, the duckbill valve, power connectors, Stainless Steel rubber joints" of the enterprise, the company adhering to the "integrity business, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact Person: Zhang. Waterproof casing is a pipe across the railway, roads, streets, etc. waterproof casing seal, to prevent pipes being crushed by the load waterproof casing, while outside the pipe set protective casing. 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 addition to the external wing ring, internal as well as stalls circle like that. Waterproof casing called wall bushing, wall pipe. Pipeline wear three joints (expansion joints, settlement, shock seam) is waterproof casing model, to ensure the pipeline will not be uneven joints on both sides of the three buildings in the settlement and broken, or distorted, usually, but also set up sets tube. This casing often have special requirements. Design requirements can be customized. Geothermal coil through the middle of the open joints room settings, but also in the outer coil, set casing, protecting heat pipe.