Mechanical methods
Mechanical methods
Manual cleaning with supplementary apparatus
Manual cleaning with supplementary apparatus (2)
Cleaning with cleaning apparatus
Cleaning with cleaning apparatus
Cleaning with cleaning apparatus (2)
Cleaning with special apparatus (3)
Cleaning with special apparatus– Operational exp...
Rotary chain cutter
Drilling and milling apparatus (Milling unit)
Cutting apparatus
High pressure water jet operated apparatus
Sandblasters
Robotic methods
Miscellaneous methods
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Images: Sandblasting of a brick sewer [Source: STEIN Ingenieure GmbH]
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Sandblasting is often used in combination with a hand held HP spray gun in man accessible sewers as a preparatory measure prior to the application of additional coatings. This method ensures a long-lasting and solid bond between the inner surface of the pipe and the coating to be applied.
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