Polyethylene piping’s performance in mining, dredging and similar applications proves it will outwear many more costly piping materials when conveying various abrasive slurries. HDPE has excellent corrosion resistance and is virtually inert. It will not need expensive maintenance or cathodic protection. It offers better overall effectiveness against corrosive acids, bases and salts than most piping materials. Moreover, polyethylene is unaffected by bacteria, fungi and the most “aggressive” naturally sourced soils. They have good potential to deal with many organic substances, including solvents and fuels.
Because polyethylene is smoother than steel, cast iron, ductile iron, or concrete, Multilayer pipe can have an equivalent volumetric flow rate at the same pressure. It provides less drag and a lower tendency for turbulence at high flow. Its superior chemical resistance and “non-stick” surface combine to just about eliminate scaling and pitting and preserve the wonderful hydraulic characteristics through the entire pipe service life.
Polyethylene pipe is manufactured in straight lengths or perhaps in coils. Made from materials about one-eighth the density of steel, it really is lightweight and fails to require the usage of heavy lifting equipment for installation. It reduces the need for fittings, is e xcellent in shifting soils and performs well in earthquake-prone areas. HDPE resists the results of freezing and allows bending without the need for an excessive quantity of fittings. Since HDPE will not be a brittle material, it can be installed with bends over uneven terrain easily in continuous lengths without additional welds or couplings.
Polyethylene pipe and fittings are inherently tough, resilient and immune to damage a result of external loads, vibrations, and from pressure surges such as water hammer. Even just in cold temperatures polyethylene pipe is tolerant to handling and bending.
Polyethylene pipe is available in a variety of diameters and wall thickness, with flanges, elbows, tees, wyes, and valves, providing an absolute system solution. HDPE pipe is likewise for sale in Iron Pipe Size (IPS), Ductile Pipe Size (DIPS) along with metric sizes. Plastic Pipe Institute members can provide pipe, fittings and other appurtenances.
Polyethylene pipe is available with color coding by application as created by the utility location and coordination council in the American Public Works Association (APWA).
Within its sewer rehab project, the metropolis of Baytown, Texas, elected to use 36-inch HDPE pipe to change 36-inch Reinforced Concrete Pipe (RCP) sewer lines. To burst over 3700 feet of pipe in residential areas, the contractor used both static and pneumatic bursting systems. The pipe bursting method was recommended over three other procedures to prevent the most important impact of bypass pumping and reduced flow capacity involved. Sliplining HDPE pipe fittings rescues Colorado highway Whenever a part of corrugated metal pipe culvert rusted and washed out, a busy Colorado highway was partially closed as a result of traffic.
The Colorado Department of Transportation acted quickly to line the culvert with polyethylene pipe. Its lightweight and durability were perfect for the project’s high elevation and isolated location. The fishing line pipe was inserted in the uphill side of your culvert and pulled into position, then a joints were
assembled. Filling the annular void space involving the existing Corrugated Metal Pipe (CMP) and also the liner pipe with grout was challenging, but successful. The liner and direct bury portions are in place, with flow restored and traffic running normally on the road above it.
A deteriorating cast iron water main in Henryetta, Oklahoma was leaking 300,000 gallons water every day and threatening to shut down the city ’s water supply. Complicating factors included water temperature that changed 30 degrees simply speaking time periods and steep slopes in the position of the leak. Reducing the quantity of pipe joints along the slope and accommodating the temperature differential, along with elevation problems, convinced city officials to pick HDPE pipe. Fourteen-inch Iron Pipe Size (IPS) DR-11 water pipe was installed over the 1,400-foot section of line extending over the steep slope towards the flatland below.
The HDPE pipe solved the elevation and water temperature problems, and allowed for rapid installation that avoided shutting from the city’s main water supply to have an extended length of time. The cost of constructing long lengths of distribution piping deprives many r ural residents of safe h2o. Carlsbad Springs in Ontario, Canada studied a reliable – flow water supply technology and chain trencher installations method, discovering they may save 66% over conventional water supply installations. Although high-density polyethylene pipe had not been from the standards for watermain materials, an assessment of your material and appropriate jointing methods determined HDPE pipe was flexible, proof against corrosion and smooth-walled. Carlsbad Springs installed approximately 33.5km (20.8mi.) of HDPE watermain which range from 75mm to 200mm (3 inch to 8 inch) diameter. Using HDPE and chain trenching excavation, watermain installation costs were only $15 per foot for 6-inch diameter pipe.
A nightmare situation faced the San Rafael, California Sanitation District.Few challenging environmental demands can compare with preventing a great deal of raw sewage from dumping into San Francisco Bay. A pipeline constructed from the 40s to transfer sewage and groundwater was rusting and corroding, along with inside sedimentary buildup that decreased its capacity significantly. Without replacing the complete sewage system, the best solution would be to install two new parallel polyethylene pipelines 15 feet below the base of the canal. Laying the pipe involved complicated directional drilling in a vertical curve having a 38dexspky of tight maneuvers, with a compound curve around private property, and without disturbing the nearby wetlands. The project utilized 16-inch SDR- 11 and 26-inch MLCP Pipe that met the criteria for pullback, capacity to bend as well as withstand the worries of horizontal directional drilling. Excavation and environmental impact were kept to a minimum, and also the project was carried out in 4 weeks, one-third some time necessary for the standard trench-digging operation, at the sum total of $2.4 million.
Since its founding in 1950, PPI has become the voice due to its members who are involved in manufacturing and distributing polyethylene pipe systems. Members share an interest in educating industry about some great benefits of HDPEm pipe, and broadening market chances to use polyethylene piping systems for water and gas distribution, sewer and wastewater, oil and gas production, industrial and mining uses, power and communication duct, and ir rigation.