POLYETHYLENE PIPE

APPLICATION OF POLYETHYLENE IN STORAGE TANK SYSTEM

SYSTEM – COMPONENTS – PROPERTIES

Different types of designs are based on German ATV-A 117 and ATV-A 128 standards. These types are basically used as integrated in the main sewer system or as a sub-branch system. Uses of storage tanks include:

–       Collecting basin

–       Passing through the basin with overflow

–       Row basins

–       Storage tank by emptying into the outfall or outlet

–       Parallel tanks or storage batteries of polyethylene storage tank systems are composed of separate components.

There are a range of standard components, from simple pipes to manholes, including installations presented up to 300mm in diameter. We have complete systems in stock for various applications. Below is a list of standard components:

–       Inspect valves and cabins

–       Pumping shafts

–       Discharge or drain shafts

–       Central overflow

–       Horizontal drain or discharge

–       Unilateral or one-sided overflow

–       Overflows are on both sides of the drainage valve of the central element of the flood storage tanks. Our plastics products are useful both in terms of cost of installation and maintenance of flood storage tanks.

Our foreign partner, in collaboration with the University of Essen, Germany, developed a hydraulic design for the central overflow polyethylene pipe. Wastewater discharge rate is influenced by the design method for reducing sediments and solid objects that prevent proper discharge. Compared to horizontal discharges, unilateral or bilateral overflow is a cost-effective alternative to low discharge volumes.

Application of Polyethylene Pipe in sewage system

1.  Wall adapter
2. Sewer polyethylene pipe
3. Domestic connection
4. Polyethylene Pipe Adapter
5. Double socket
6. Polyethylene Fittings

Sewage pipes are HDPE double-wall polyethylene pipes and are available in 6m (standard) sizes. Thanks to the flexibility of production, polyethylene pipes are manufactured for all embedded conditions and all classes of ring stiffness. The diameters for the polyethylene pipes are between 300 mm and 4000 mm and equal to the inner diameter of the pipes.

There are different types of wall adapters with core-tube for connecting polyethylene pipes or other flexible materials to rigid materials or places such as walls. On the picture you can see a small piece of it that has a plastic ring.

A domestic double-wall polyethylene pipe connection with core-tube can be provided with a plastic ring or welded. In both cases, in domestic connection of the polyethylene pipe, connections or other accessories other than HDPE may be used for connection.

Adapter pipes with core-tube, also called Bauku easy-cut systems, are designed to produce precision adapter pipe used in the workplace and where standard polyethylene pipe sizes are impossible to be used. The quality of the technology of the connectors determines the quality of the whole polyethylene pipe system, that is why no tolerance is acceptable at this stage and the best facilities are used for each operation.

Coupling methods for connecting double wall polyethylene pipes

Double wall polyethylene pipes are constructed in 6-meter lengths and by using different methods pipes are connected to each other. In this regard, Tadbir Novin Sazan Co., based on the knowledge and equipment of the day, as well as experienced and trained personnel in Germany, can perform the following types of fittings:

• PLASTIC RING CONNECTION

This type of connection can be produced in diameters of 300 to 1200 mm. The plastic ring in this case is effectively protected from the impact of external factors and damage. This type of connection is cheaper and easier to install.

• Extrusion Welding:

This type of welding with the latest methods of German company, BAUKU, can perform pipes with / without socket and spigot, and can make a double V-type welds from inside and outside, and one-way welding from inside or outside. Also in pipes without socket and spigot, the V-type weld and/ or double V-type weld could be performed. Also in the construction of reservoirs and septic tanks and other fittings, this type of welding is the only available standard method:

• Electrofusion Welding

In this method the electrode is added to the socket, and socket & spigot reach together to the melting point. This method is used in diameters of 300 to 1800 mm. The products are made of high density polyethylene (HDPE) material. Outstanding features of HDPE are the main reason for their use in drinking water, gas and many other applications.

Also, in other sensitive areas, such as waste disposal, it guarantees the safety of human health and the environment. Since 2005, Tadbir Novin Sazan has been producing black polyethylene pipes with core-tube. The lighter color of core-tubed pipes is the answer that the company provides to the changing needs of its customers. The lighter color inside the pipes makes it easier to inspect with the camera, and to repair and maintain it. In addition, as before the pipes do not absorb the sun’s heat and as a result deformation due to the heat absorption is greatly reduced.

This welding method is considered as a high-speed method and is applicable to most sewerage projects. The company in this field also uses the German company’, KRAH, latest technology in the world.

• EPDM

The use of EPDM gaskets is a very convenient and fast method in pipes with diameters less than 1200 mm which can be used in surface water collection projects:

In the above figure, two different types of gaskets on the socket area are shown that other types of gaskets capable of running on the spigot part also runs in the company.

• Mechanical Coupling

The use of ring and flange system with nuts and bolts in couplings of reservoirs and septic tanks and/or the implementation of a high pressure pipelines in smaller sizes (such as marine chlorination pipes) are other methods of connecting pipes. In this field, for larger diameter pipes in marine projects for construction of multi-hundred-meter spools and connection of these spools to each other, the Stub Ends and metal rings are used which the construction of these Stub Ends are of the company’s specific capabilities, and full explanation in the previous sections has been provided.