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Core Drilling to Remove Old Cast Iron Soil Pipe and Replace With PVC

Posted: Fri Feb 23, 2018 9:14 am
Hello all

I am new to this forum but its being very helpful. I want to remove the old cast iron soil pipe and replace it with PVC. The wall thickness is approx. 300mm and the question is there are no drill bits out there to drill 117x300MM. should I get a 117x150 and drill from both sides ?
Your helpful feedback would be very grateful. I have a SDS plus with Mechanical safety clutch.