AKBOR GLASS REINFORCED POLYESTER PIPES (GRP) AND FITTINGS

AKBOR Pipe and Trade Inc provide a definite solution for the corrosion problem with its Glass Reinforced Polyester (GRP) Pipes, Couplings and Fittings in Turkey. AKBOR GRP pipes are designed to be used in underground and above ground piping systems, to transport sewage, sea water, aggressive chemicals, and potable water under pressure and gravity flow. The pipe is a flexible, filament wound structural composite. The pipes and couplings are manufactured under strict quality standards and are remarkable for their great strength, outstanding chemical resistance, and low weight. They are superior in these respects to all competitors. GRP pipes and couplings are characterized by their long life and economical operation with low maintenance costs.

TECHNICAL PROPERTIES OF AKBOR GRP PIPES                             

AKBOR GRP Pipes and Fittings are manufactured by using Continuous filament super winding process.

• Resistant against corrosion and chemicals and don’t need to be painted
• Very good hydraulic and mechanical properties
• With the 2 way EPDM gasket provides %100 leak-tightness.
• Due to its low weight easy and fast installation.
• Very low maintenance cost
• Can be manufactured conform to design at  requested  lengths between 0,3-15m
• It is healthy and meet all the requirement of ISO 14001 
• Life expectancy is more than 50 years.
• Do not require expensive interior and exterior coating and cathodic protection.
• There is not any current induction due to ground current (Coming from lightning or other surrounding electrical network).

PRODUCTION RANGE AND APPLICATION

The production ranges of AKBOR GRP Pipes are given below;

 GRP Pipes are widely used in the following applications;

• Main pipes and branch lines for potable water distribution systems.
• Pipes for sewage systems. Main and subsidiary sewage
• Collectors by pressure and gravity flow.
• Pipes for waste water systems.
• Pipes for cooling systems of power stations (sea water).
• Pipes for submarine systems.
• Pipes for systems in chemical plants.

PERFORMANCE STANDARDS

GRP Pipes are designed according to ASTM and AWWA Standards and meet all the requirements of BS, DIN, EN and TURKISK TS Standards.

Quality Policy GRP Pipes are manufactured by latest technology as Continuous filament super winding process. To continuously keep product quality at high level, all the phases of product starting from acceptance of raw materials to site supervision of pipe installation must be controlled with great care. All the tests are made in conformity to International Standards Product Control Tests includes axial tensile & peripheral tensile strengths and stiffness tests, Pipe hardness (barcol) test, Pipe ID/OD diameters, thickness and Length measurements, Pipe pressure tests, Coupling pressure tests, Impact load withstand test, Long term test

CONTINUOUS FILAMENT SUPER WINDING PROCESS

In order to keep the quality of GRP Pipes within the requirements of related international A.S.T.M and AWWA standards it is necessary to control perfectly all the process parameters. The latest technology and control system available in the market for GRP Pipe manufacturing is the continuous filament superwinding process developed and used by AKBOR. The Level-1 hardware consists of High Performance PLC and Operator HMI. The PDI data like diameter, stiffness and pressure class are entered manually by the Operator.

The manufacturing of GRP pipe is carried out through a mandrel formed by winding a continuous steel band over a horizontal beam provided with supporting disks sized according to the diameter of the pipe required. The steel band moves in the axial way sliding over the ball bearings inserted in beam grooves. At the end of the mandrel, the steel band is guided by exit head into the mandrel inner tube, which supports the exit head. On the opposite end of the mandrel near the cam, the steel band is wound on the mandrel again. In this way the steel band forms a smooth surface mandrel with simultaneous advancing in the axial direction
The glass fiber laminate is applied onto the moving mandrel according to the following procedure.

Firstly a polyester film is wound on the mandrel, followed by a surfacing mat, both of them supported by proper winders. Glass roving together with chopped glass, sand aggregate, polyester resin is applied simultaneously on the proper mandrel positions according to GRP Pipe design specifications. At the end, a layer of surfacing mat is applied.
According to the process philosophy, the layer applied next to the steel tape provides the required chemical resistance (inner layer), while the material supplied over the liner layer represents the mechanical resistant outer layer.

Following curing phase the GRP pipe is cut to the preset length and conveyed by runout table to calibration/chamfering, hydro test and coupling stations.

MECHANICAL PROPERTIES

AKBOR coupling withstand a maximum pressure of 32 atmosphere and also total vacuum and is suitable for all working pressures. The AKBOR coupling allows connecting with angular deflection.

The allowable angular deflection is as follows:

The production technology for GRP pipes includes a quality assurance program in accordance with ISO 9001 requirements. The program stipulates a series of tests in the course of production, from the raw materials through the production stages, and a comprehensive series of tests on the finished product. Pipes and couplings are manufactured in conformity with American, Turkey and British standards developed for GRP pipes to convey water and sewage under pressure and by gravity flow.

Standards applied to AKBOR GRP Pipes from diameter range 300 mm to 2600 are given in below table;

The standards applicable to GRP with diameters from 300 mm to 2600 mm are: