Sterling Pipe Incorporation (SPI) is a well-known manufacturer in the industrial, municipal, agricultural/irrigation, domestic pipe markets.
Sterling Pipe Incorporation (SPI) is a well-known manufacturer in the industrial, municipal, agricultural/irrigation, domestic pipe markets. Engineered for gravity flow systems and also pumping mains a wide range of HDPE Pipe are available to meet specific requirements of customers. Proper raw materials with specified grades (PE63, PE80, and PE100) are selected for production and these polyethylene’s’ are polymerized in controlled environment thus producing PE pipes of high quality products, superiority on nature.
Polyethylene (PE100) pipes can carry potable water, waste water, slurries, chemicals, hazardous wastes and compressed gases. In fact, PE100 is strong, extremely tough and very durable when compared to it preceding material like PE 80 grade and PE63 grade. PE100 pipe has superior qualities in terms of mechanical and all also other properties when compared to PE80, PE63.
The Polyethylene material used for the manufacture of pipeline systems are classified and dimensioned by long term performance under hydrostatic pressure in accordance with IS-4984:1995. The design basis used in IS-4984:1995 for Pressure rating (PN rating) of PE pipes in order to determine the minimum wall thickness for each diameter and PN rating provides for the steady and continuous application of the maximum allowable working pressure over an arbitrary period of 50 years.
The selection of the long term hydrostatic design stress value (HDS) is dependent on the specific grade of PE and the pipe material service temperature.
HDPE Pipe contains a minimum of 2% carbon black additive to protect the product from ultraviolet light. This gives HDPE Pipe maximum weather resistance in applications where continuous exposure to the elements is expected.
HDPE has the highest level of chemical resistance of all traditional sewer products. HDPE Pipe brings the gravity flow sewer market the same exceptional performance remaining tough and resistant under conditions that could seriously damage pipe made of other conventional materials.
Tests indicate that HDPE Pipe is highly resistant to abrasion, giving it a significant advantage over other pipe materials in both acidic and abrasive environments. Piping made from polyethylene is a cost effective solution for a broad range of piping problems in municipal, industrial, marine, mining, landfill, duct and agricultural applications. It has been tested and proven effective for above ground, surface, buried, slip lined, floating, and sub-surface marine applications.
Polyethylene is resistance to corrosive acids, bases and salts than most piping materials. In addition, polyethylene is unaffected by bacteria, fungi and the most “aggressive” naturally occurring soils. It has good resistance to many organic substances, such as solvents and fuels.
Polyethylene pipe and fittings are inherently tough, resilient and resistant to damage caused by external loads, vibrations, and from pressure surges such as water hammer. Even in cold weather polyethylene pipe is tolerant to handling and bending.
Polyethylene is smoother than steel, cast iron, ductile iron, or concrete, a smaller PE pipe can carry an equivalent volumetric flow rate at the same pressure. It has less drag and a lower tendency for turbulence at high flow. Its superior chemical resistance and “non-stick” surface combine to almost eliminate scaling and pitting and preserve the excellent hydraulic characteristics throughout the pipe service life.
Polyethylene pipe is produced in straight lengths or in coils. Made from materials about one-eighth the density of steel, it is lightweight and does not require the use of heavy lifting equipment for installation. It reduces the need for fittings, is excellent in shifting soils and performs well in earthquake-prone areas. HDPE resists the effects of freezing and allows bending without the need for an excessive number of fittings. Since HDPE is not a brittle material, it can be installed with bends over uneven terrain easily in continuous lengths without additional welds or couplings
The design and construction of HDPE product offer a distinct weight advantage over conventional pipe. They provide ease of handling, positioning, installing and connecting those conventional pipes cannot match. HDPE pipe affords these important benefits to the user:
Due to its light weight, less manpower and lighter machinery is needed to transport, handle and connect HDPE pipe compared to most of the other pipes. That’s real savings and real value added by using HDPE Pipe.
The Continuous coils up to 1000 meters can be achieved for the pipes with diameters from minimal to 110 mm dia pipes. For more than 110 diameter pipe standard length s up to 12 meter is produced and these 12 meter standard lengths are easily handled and installed using minimal equipment.
PE pipe is highly resistant to the rigors of installation handling in tough environment prevailing at the site location. HDPE pipe can be installed with confidence in the hottest of summer or the coldest of winter conditions.
At less than 10% the weight per meter of concrete pipe, HDPE pipe gives the handler and installer a big safety advantage. For example a 2.4 m length of 900 mm diameter concrete pipe weighs more than 2,400 kg, while an equal length of 500 mm diameter HDPE pipe weighs less than 100 kg.