Un punto di svolta per la sostituzione rete gas in acciaio e collegamenti

A seguito del successo Network Innovation Allowance (NIA) funded project to develop a tool for the safe, effective window cutting of ductile iron mains, Galles & West Utilities has worked with Steve Vick International (ALL) to introduce a cutter which allows the removal of a window from a steel main.
Due to the lack of tooling available, Galles & West Utilities and all other gas distribution networks have not been able to plan the replacement of steel networks other than by inefficient methods such as ‘open cut’. Often, replacement jobs are rerouted to avoid the replacement of steel sections which results in additional work incurring extra costs.

Vivere Mains Inserimento

As Wales & West Utilities replaces around 90% of its network using the Live Mains Insertion technique, the company identified a need to develop a tool to effectively cut a window in steel mains and be the first GDN to plan a replacement programme for its 200km steel network.

When it comes to transferring services to a newly inserted PE pipe, it is necessary to cut out the metal main. Cast iron can be simply broken out; Galles & West Utilities and SVI successfully developed the Rapid Window Cutter for Ductile Iron. Now the two companies have produced, with NIA funding, the hand-held Rapid Window Cutter for Steel which will transform the way the industry plans replacement programmes for steel networks.

The design of the tool builds on the successful engineering of the Rapid Window Cutter for Ductile Iron with modifications to the air powered motor and blade system. La taglierina rende tagli sia semi-circonferenziali e longitudinali, quest'ultimo utilizzando un peso leggero, facile da montare telaio di guida che permette il movimento lineare libera.

The frame incorporates a small winch at one end of the guide rail, and using a turn handle the winch cable is used to pull the cutter along the track. By adding this simple mechanism, the operator is in complete control of the machine without having to apply any force.

The light weight frame is available in various lengths, and comes complete with 4”, 6” and 8” profiles.

Montato sul telaio di guida, Finestra Cutter SVI è impostata per effettuare un taglio longitudinale su una portante in acciaio.


By developing a window cutter for steel mains, all networks can efficiently start to replace this material and avoid high costs associated with unplanned works, reducing costs for the end customer.

La finestra Cutter rapido per acciaio è adatto a livello 1 alimentazione con una profondità di taglio massima di 13 millimetri ed è dotato di dischi di controllo profondità che consentono di tagliare rete inseriti in modo sicuro senza danneggiare il PE. Il motore è azionata ad aria ed è alimentato da un compressore tipico sito. La macchina è veloce da installare e facilmente gestito da una persona.

New Connections

Where there is a need for a new gas connection on previously inserted mains, the Rapid Window Cutter is able to safely cut a typical ‘top tee’ size window in less than 30 minuti; this is dramatically faster compared with existing tooling.

Lucy Mason, Galles & West Utilities Innovation Manager, disse:

“After the success of our Ductile Iron Mains Cutter, working alongside SVI to develop an equivalent for steel was a natural step. Our use of Live Mains Insertion is driven by what our customers want: us to work efficiently, safely and quickly, with as little disruption to them as possible. The Rapid Window Cutter for Steel helps us deliver this.
The Network Innovation Allowance (NIA) is an Ofgem incentive for funding smaller innovation Projects that can deliver benefits to customers.

L'acciaio taglierina è progettata per tagliare finestre sulla rete di acciaio per consentire l'installazione di un servizio di tee dove il principale host è già inserito con PE. La finestra è tagliato con due tagli semi-circonferenziali alle estremità e due tagli longitudinali utilizzando un telaio di guida

Steel Pipe Cutting Made Fast and Easy

As part of the Rapid cutter range, SVI has also designed a circumferential cutter for steel mains.
With these two new products – The Rapid Window Cutter and the Rapid Rotary Cutter – SVI believes that it offers utilities faster, safer and more efficient cutting of steel mains.

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