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Drilling equipment

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Devices of Ravetti company, drilling under thrust, rank among the best products for this work operation on the present market. Their main advantage is ability to keep constant torsional moment and thus permanent thrust during inner boring. This enables faster drilling process, prolongation of cutting tool lifetime and lower operator effort during manual control.

For diameters of ¾" to 6", either HSS drills or circular HSS milling cutters with wall thickness of 1.6 mm or HSS/CT milling cutters with carbide teeth are used. Alternatively, milling cutters with carbide teeth can be used.

Drills characteristic of 26 cm long drill path are designed for cutting of gas and water pipes up to thickness of DN.6' (140 mm) under pressure up to 12 bar.

Wide range of models are offered for work on gas and water pipeline made of steel, cast iron, polyethylene, PVC, concrete or asbestos-cement. Their choice depends on size of drill holes, varnish in the pipe and environment where the pipeline is placed.

All drilling devices are made of high quality steel with double surface zinc plating in gold colour. This ensures the best protection of the product for its long lifetime. The device can also be delivered in stainless steel for applications at work in water or contaminated environment which do not enable the use of standard version.

When drilling holes up to 3 ", manual drive is usually used, up to 6 ", pneumatic or hydraulic drive is used. For larger hole diameters, only hydraulic system is used to drive.

Technology of drills, which we have been improving over 40 years, enables drilling of piping from ND 1/2 up to 48'' under pressure up to 100 bar at temperatures up to 180°C.

Model

Gas L.P.

Gas M.P.

Water

Range

Max. pressure (bar)

Standard version

Max. pressure (bar)

HP version

Art. 230

X

X

X

3/4” → 2”

12

 

Art. 235

X

X

X

3/4” → 2”

12

 

Art. 325/62

X

X

 

1” → 2”

12

25

Art. 330

X

X

X

1” → 6”

12

25

Art. 330/1000

X

X

X

1” → 6”

12

25

Art. 530

 

X

X

1” → 6”

12

40

Art. 3000/50

 

X

X

8” → 20”

12

30

Art. 3000/1000

 

X

X

8” → 20”

12

40

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