Pe prestress spiral pipe advantages detailed descriptionCorrosion of prestressed PE corrugated pipe generally appears as a crack first, and then develops rapidly until it fails. In the oil plant, river water (or groundwater) is used as the condensing medium, and the cl content in the water is extremely low. It is safer to use plastic corrugated pipe to work in this place. At present, due to the erosion of sediment in the water, the wall of the stainless steel pipe is thinned. The problem of shortening the life of the corrugated pipe is technically difficult. However, according to the usage, the wall thickness is detected and no change is seen. It has never been repaired, and it can be seen that mud and sand are washed away, which does not affect the life of the plastic corrugated pipe. 3 Actual effect The wall thickness of the plastic corrugated pipe heat exchanger is only 0.8mm, and the heat exchange effect is enhanced. Due to the existence of plastic corrugated pipe, not only the heat exchange area is enlarged, but more importantly, the liquid continues to turbulent as it flows through the tube, which greatly increases the heat exchange effect. On the other hand, due to the turbulent flow of the liquid, it is difficult to form dirt due to the continuous scouring of the inner wall, and the plastic corrugated pipe will almost never block the pipe. (1) The shock resistance of the plastic corrugated pipe heat exchanger tube bundle is poor.
When the hole-forming material is destroyed, the slurry is a protective barrier for the prestressed steel in the prestressed concrete structure. Plastic corrugated pipe is a new type of hole-forming material. Compared with metal corrugated pipe, it has the following advantages:
1. The original material of prestressed plastic corrugated pipe is HDPE. Its corrosion resistance is far superior to metals, not afraid of acid and alkali corrosion, it does not corrode itself, and can effectively maintain prestressed tendons from corrosion. Many prestressed structures are subject to severe external influences, such as deicing salt or salt water. When the post-tensioning member is broken or fails due to the collapse of the waterproof layer, the leakage of micro-cracks and the drainage equipment, the prestressed tendons may be subject to corrosion effects. The "grouting of prestressed tendons" in "FIP Construction Strategy (1990)" pointed out that metal pipes have no permanent anti-corrosion ability, which is not enough to resist water leakage and reach the slurry and prestressed tendons. The prestressed plastic corrugated pipe can provide a barrier maintenance effect for the prestressed ribs that is much better than that of the metal corrugated pipe. It can prevent the pollution of harmful substances penetrating the pipeline, thereby ensuring that the post-tensioned prestressed structure has better durability. ;
2. Under equal conditions, the coefficient of the reserved channel of the prestressed plastic wave tube is significantly smaller than the coefficient of the reserved channel of the metal corrugated pipe, which reduces the loss of prestress during the tension process. In general, the coefficient of plastic corrugated pipe is 0.14, and the coefficient of metal corrugated pipe is 0.25; the prestressed plastic corrugated pipe have high strength, are not afraid of stepping, are not easily broken by vibration, and have high sealing and anti-leakage functions For metal corrugated pipe, it is more suitable for vacuum grouting;
3. The prestressed plastic corrugated pipe are not conductive, which can prevent the corrosion of stray current, and the metal is a good conductor of electricity;
4. The prestressed plastic corrugated pipe has a better work resistance function, which can greatly improve the fatigue resistance of components.
The pre-stressed PE corrugated pipe have high shaft strength, very good circulation of materials, and the bending radius is approximately equal to the outer diameter, excellent chemical resistance, and can discharge static electricity (according to BGR-132, formerlyZH1 / 200) spiral wire grounding. Coated on the inner wall of the tube; wall: special PVC, about 1.0MM wall thickness, smooth inner wall; spiral: can be strengthened by elastic steel wire. Temperature scale: about -40 to +90 standard: inner diameter 16-305MM; original prestressed plastic corrugated pipe The information is HDPE. Its corrosion resistance is far superior to metals, not afraid of acid and alkali corrosion, it does not corrode itself, and can effectively maintain prestressed tendons from corrosion. Many prestressed structures are subject to severe external influences, such as deicing salt or salt water. When the post-tensioning member is broken or fails due to the collapse of the waterproof layer, the leakage of micro-cracks and the drainage equipment, the prestressed tendons may be subject to corrosion effects. The "grouting of prestressed tendons" in "FIP Construction Strategy (1990)" points out.
Gaoming prestressed PE corrugated pipe size
Pre-stressed PE corrugated pipe Pre-stressed plastic corrugated pipe are mainly used for pre-stressed tunnels such as post-tensioned prestressed beams and slope anchors. Bridge to avoid stress plastic corrugated pipe prestressed plastic corrugated pipe / prestressed plastic spiral pipe / prestressed plastic spiral corrugated pipe / concrete corrugated pipe / prestressed cast-in-situ plastic corrugated pipe. Prestressed plastic corrugated pipe is a single-wall corrugated pipe extruded from high-density polyethylene (HDPE) through a plastic extruder. It is used for post-tensioned prestressed concrete construction and is used as a prestressed ribbed pipe. It is an aspirational product to replace the original metal corrugated pipe in bridge and construction. Plastic corrugated pipe are divided into two categories: round pipe and flat pipe, which are supplemented by various types of plastic connectors in actual use. Abrasive solids such as dust, powder, fibers, flakes and particles, gas and liquid environments are used for dust-removal and extraction plants, industrial vacuum cleaners, paper and textile fibers, and are used as maintenance-resistant tubes. Glass industry. Wharf. Iron and steel plant. Mine pit. Shipyard. Cement plant and other transportation pipes; Features: Extremely wear-resistant and the bottom layer has steel wire to strengthen the strength of the tube, or no steel wire; Very resistant to high pressure, vacuum and anti-shrinkage.
If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076