what is the best way to drill a hole in a duplex pipe to weld a 2" and 3" nipolet ? Is by a mechanical way as a drill or by a flame cutting torch and why ?
Member
what is the best way to drill a hole in a duplex pipe to weld a 2" and 3" nipolet ? Is by a mechanical way as a drill or by a flame cutting torch and why ?
Junior Member
You will have to drill and machine ( milling machine, pedastal drill, etc). You cannot flame cut (oxy-acetylene) stainless steels - of which duplex steels are a member.
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