PROCESING | LARGE DIAMETER PIPE
co-extruders from the Atlas 30D series can plasti- cise up to 2,200kg of resin per hour with optimal melt homogeneity, says the company. The machines come with anti-wear coated
Above: UPI has made 1.8m diameter PE pipe for a
cooling system at the Borouge 4 complex
Right: Luna Plast is making 1200mm diameter pipes on a new line from Tecnomatic
Cooling water Union Pipes Industry (UPI) has produced 1.8m diameter cooling water pipes for the new Borouge 4 complex – using Borouge’s own polyethylene materials UPI produced around 2km of PE pipes – which have a flow rate of around 26,000 cubic meters per hour. Localising the manufacture allowed UPI to make very long pipes, with each segment measuring 24m – unlike the industry standard of around 12m. Long-length pipes require fewer joints and welds, enabling faster and safer installation, says Borouge. “Our materials are specifically designed using Borstar technology, for the production of thick- walled polyethylene pipes,” said Khalfan AlMuhairi, senior vice president for the MEAE region at Boroug e. “By offering more durable and reliable pipe solutions, we continue to boost the sustainabil- ity of pipe networks by making them safer, longer lasting and more efficient. This helps eliminate water leakage, while offering energy savings.” The pipes will be installed for a critical cooling
water system at the Borouge 4 project in Al Ruways Industrial City, UAE.
Line order Luna Plast, a pipe manufacturer based in the Czech Republic, has ordered a line from Tecnomatic, to make multi-layer HDPE pipes up to 1200mm in diameter. The three-layer pipe is for pressure applications – and has an extra polypropylene (PP) protective layer and jacketing, according to the EN 253 standard for district heating. The line includes pre-heating treatment for all
materials, which are weighed by an automatic gravimetric dosing system and fully integrated into the line’s control system. The main extruder – from the 37D Vega series – is a 1200mm single-screw extruder. Two 60mm
30 PIPE & PROFILE EXTRUSION | September 2023
www.pipeandprofile.com
screws and barrels, synchronous AC motors, solid gearboxes, and an independent oil cooling unit. The entire line is controlled by the company’s EPC III (Extrusion Process Control), with integrated web server and 4.0 connectivity. It includes a 21.5-inch TFT LED display, with a wide viewing angle. The line also includes an optimised Venus Multi 3-1200 die head, which is based on a three-spiral design to ensure optimal melt flow for a wide range of thickness ratios. The die-head is compact, with low pressure build-up and energy savings. It covers the full size range from 315 to 1,200mm, producing three diameters per die-set for sizes up to 800mm. It uses the classic draw-down mode and – for larger sizes – the swelling mode for better control of wall thickness distribution and pipe ovality. The die-sets comprise of two parts with a small end ring to define the gap of the die, permitting a rapid size change and adjustment. A Pipe Air Cooling (PAC) system provides intensive cooling of the inner pipe surface by sucking air in the oppo- site direction to extrusion. By forcing the air flow it ensures uniform cooling around the pipe and through the wall thickness, decreasing the differ- ences in the pipe solidification rate and reducing the residual internal stresses. Downstream equipment includes haul-off,
cutter and cooling tank. To manage an output over
IMAGE: BOROUGE
IMAGE: TECNOMATIC
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