TPi May 2015

products & developments Re-lining project provides clean water for 150,000

GF Piping Systems was selected as provider for the jointing technology. In this application, plastics are resistant to corrosion and abrasion. When professionally installed, a 100-year service life can be expected. The low weight of plastic pipes is of benefit in the areas of transportation and processing. Energy costs can be reduced with targeted layout planning and optimal sizing contributing to a steady flow rate. Plastic solutions also have a considerably smaller carbon footprint than traditional materials – an important factor in designing sustainable and future-orientated piping systems. The installation company used GF Piping Systems electro-fusion couplers for water and gas applications. These ensure a quick and reliable connection of pipes and spigot fittings with active reinforcement.

Providing large cities with drinking water is not an easy task. Out-dated systems can cause problems such as leakages or contaminations. To secure a reliable, economical and sustainable water supply for the future, the Waterworks Lublin (Poland) decided to renew part of its old steel piping system. The new polyethylene piping system from GF Piping Systems now serves nearly half of the 350,000 inhabitants. Molewski Sp zoo realised the project from May to November 2014 for the Waterworks Lublin. Established since 1978, the experienced construction company is specialised in building and environmental engineering such as road building and trenchless technology. The transport line leads right through the city centre, so the project required the re-lining method, to be as space saving as possible and due to the limited number of branch connections in the city.

ELGEF coupler and MSA 2.1 welding machine

The functioning of the coupler has its origin in the manufacturing technology. The outer pipe section is pressed over the inner pipe section. During the fusion process, the active reinforcement takes effect: the heat in the fusion zone reduces the stiffness of the inner ring and the reinforcement ring pushes actively from the outside to the inner ring. Larger gaps can be closed more quickly and expansion of the coupler is inhibited. During the cooling process the constant pressure from the outside makes the coupler shrink onto the pipe. The extra-large inner diameter of the coupler permits easy assembly, and accommodates the pipe ovality often found in practice. The exclusive use of PE material ensures safe connection even at low temperatures. No special welding machine is required – all current GF welding machines are suitable. GF Piping Systems Ltd – Switzerland info.ps@georgfischer.com www.gfps.com

Installation of ELGEF couplers

Steel pipe and fittings Hebei Xingfeng Steel Pipe Co is a manufacturer of steel pipe and fittings.

hollow sections (15 x 15mm to 300 x 300mm); and steel flanges and pipe fittings.

The company can also supply hot-dipped galvanised and non- galvanised pipe; seamless steel pipes (12 to 610mm); ERW welded steel pipe from 21.3 to 219.1mm (½" to 8"); HFW (LSAW) welded steel pipe from 219.1 to 1,420mm (8" to 56"); square and rectangular

The company holds stock of seamless steel pipes according to standards such as DN150-DN350, Sch40, Sch80 and ASTM A106/A53/API 5L Gr B. The maximum pipe length is 13m.

Hebei Xingfeng Steel Pipe Co, Ltd – China

sales@chinaxingfeng.com www.chinaxingfeng.com

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Tube Products International May 2015

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