CORRUGATED PIPE | MACHINERY


water and rainwater pipe – while the HD500 can also make drainage pipe.


Smaller models Olmas of Italy showed two machines – to make small to medium sized corrugated pipes – at K2022.


Its C4 model is compact and specifically designed for small diameters (from 4mm internal diameter to 18mm external diameter) – which are typically to make nylon tubing for the automotive industry. The company says its advantages include: the ability to vary the number of moulds with simple operations; controlling all functions through a PLC and touchscreen monitor; an option of liquid cooling; and ease of use. The slightly larger C2 is for the production of medium-diameter pipes for the electrical, health- care and other industries, in a range between 10mm internal diameter and 55 mm external diameter. It is versatile, thanks to special extrusion heads that can make tubes with different coloured foils and strips.


Quick production ITIB Machinery of Italy says its new FV32/112HP corrugator is the fastest in the range. It is suited to high-speed production of small- diameter pipes. Within its name, FV denotes vacuum forming, while it produces pipe with a maximum outer diameter of 32mm and has 112 pairs of moulds. HP is an abbreviation for ‘high performance’. The model has a maximum mechanical speed of 80 m/min, making it suitable to make PVC, PP and PE conduits. In the new design, each half of the mould chain is moved by separate gears driven by a single brushless motor, with gearbox and torque limiter, to avoid damaging the moulds in case of a jam. The optimised length of the forming channel – and cooling on all four sides of the moulds – helps to make production faster and more efficient. Openable inlet covers grant an easy access to the closing channel in case of material jam, thus reducing downtime of the extrusion line. The short length of the extrusion die helps to


decrease head pressure and fully exploit the high cooling capacity of the machine, says ITIB. Addi- tional central free-running gears, independently controlled cooling and right/left channel tempera- ture-setting help to prevent chain thermal expan- sion issues. In addition, energy consumption, temperature and transmission torque are constant- ly checked by onboard monitor systems.


www.pipeandprofile.com May/June 2023 | PIPE & PROFILE EXTRUSION 39


Warp speed Inoex introduced Warp CP – a new system for measuring corrugated pipe – at K2022. It uses eight radar-based wall thickness sensors to measure a variety of structures in a pipe. These include outer and inner diameters, and the wall thick- nesses of the bell, crest, liner and valley. The system is available for


large corrugated pipes with diam- eters from 300mm. The sensors scan the corrugated pipe continuously. Because the


corrugated tube has different structures, it is necessary to assign the measurement data to the corresponding position on or in the pipe, says Inoex. This is done automatically by Warp-CP’s algorithms. Data is prepared for the user in in the form of different graphics and measurement data for each structure. In addition, Inoex showcased its Warp 100, an inline system for wall thickness and diameter measurement. It is available in three sizes and can be used for measurements in the 60-630mm diameter range. Special optics allow the alignment of the radar wave to be focused on the centre of the pipe. Sensors are arranged so that measuring spots overlap – ensuring close-meshed coverage in the extrusion direction. Maximum line speed is up to 11.8 m/min.


Pipe inspection Pixargus has upgraded its ProfilControl 7 S inline inspection system for corrugated tubing – saying that it reduces the effort of checking these pipes for flaws.


In corrugated tube extrusion, inspection systems


must deal with alternating sections of corrugated and plane structures. Certain sections may require other inspection modes – or the corrugator may engrave features into an extruded product that


Below: ITIB says its


FV32/112HP corrugator allows


high-speed production of small-diameter pipes


Left: Warp CP from Inoex uses eight radar-based wall thickness sensors to assess corru- gated pipe quality


IMAGE: INOEX


IMAGE: ITIB


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