PROCESING | LARGE DIAMETER PIPE
Right: A capital improvement project in Utah used six miles of 63in HDPE pipe to redirect water back into the Great Salt Lake
2,000 kg/h and thickness up to 109mm, the line has a cooling length of almost 50m. A planetary saw with circular blade cuts even thick pipe without extraction of material. In addition, a terahertz measurement system assesses layer thicknesses from 100 microns with a measuring rate of 100Hz. For production of jacketing pipes, a surface treatment to increase surface wettability through electrical discharge is applied. The corona system is designed to treat or clean the inside surface of jacket pipes for opti- mised adhesion of PUR foam – which is needed to insulate the pipe core.
Winning big Two winners at this year’s Plastic Pipe Institute (PPI) awards were for large-diameter pipe. In one project, the underground rainwater harvesting system for The Fred – a residential apartment complex in Minnesota, with a focus on green construction – used 250ft of 60in diameter Goldpro Storm corrugated polypropylene (PP) pipe from Prinsco. The system’s rated capacity is 4,877 cu ft of
Below: A residential apartment complex in Minnesota used 60in diameter PP pipe from Prinsco in a rainwater harvesting system
water that will be captured from the surface and stored – to irrigate the area. Due to the footprint, depth, and watertight constraints, the system needed custom-elongated fittings, with integral gasket and bell and spigot coupling joints. In the municipal and industrial division, a sewer in Utah used more than six miles of 63in high density polyethylene (HDPE) pipe. The capital improvement project meets the state’s new Technology-Based Phosphorus Effluent Limits (TBPELs) – and redirects water back into the Great Salt Lake to meet state nutrient level requirements and protect the ecosystem and wildlife. The HDPE pipe was chosen because the soil is
very corrosive, and because the pipe could provide leak-free, fused joints. It also eliminated more than 450 truck deliveries (400,000 truck miles), reducing
the carbon footprint of project by eliminating over 1800 tonnes of CO2
emissions.
Pipeline Plastics manufactured and provided the PE 4710 pipe used in the project.
System showcase Drossbach showcased several of its corrugators at K2022 – including a system that makes pipes up to 1200mm outside diameter. The HD1200 has a high output speed thanks to
directly water-cooled mould blocks and an inte- grated full vacuum system. Aluminium master mould blocks carry the mould block inserts. These run in the machine on steel paving tiles and follow the shuttle system. An automatic, centralised lubrication system contributes towards mainte- nance-free operation, says the company. After adjustment, the die head is fixed to the
corrugator with a centring ring, so no later align- ment is necessary. The parking station and shuttle principle allow variable pipe length even with inline produced sockets. Mould block inserts, fixed with quick fasteners, ensure rapid tool exchange. The smaller HD500-T3 produces pipes with a maximum outside diameter of 560mm and internal diameter of 100mm. It has 39 mould blocks per side. Both models are typically used to make waste- water and rainwater pipe – while the HD500 is also used to make drainage pipe.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.pipelife.com �
www.borouge.com �
https://en.lunaplast.eu �
www.tecnomaticsrl.net �
www.plasticpipe.org �
www.prinsco.com �
www.pipelineplastics.com �
www.drossbach.de
32 PIPE & PROFILE EXTRUSION | September 2023
www.pipeandprofile.com
IMAGE: PRINSCO
IMAGE: PIPELINE PLASTICS
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