Quick question on drill bit sizing

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JB33t

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For 3/4 inch pipe/ bulkhead I use a 20mm diamond drill bit and for 1” pipe I use a 25mm? Is this correct just want to make sure before I start drilling. Thank you
 
For 3/4 inch pipe/ bulkhead I use a 20mm diamond drill bit and for 1” pipe I use a 25mm? Is this correct just want to make sure before I start drilling. Thank you

Not correct... give me one minute and I'll throw a link in with the appropriate sizes

Screenshot_20210130-111122_Samsung Internet.jpg
 
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Thank you!

So if these are Schedule 40 bulkheads, looking at the information above you need a 35mm drill bit for a 3/4" bulkhead and 45mm for a 1" bulkhead. Schedule 80 will be bigger
 
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So if these are Schedule 40 bulkheads, looking at the information above you need a 35mm drill bit for a 3/4" bulkhead and 45mm for a 1" bulkhead. Schedule 80 will be bigger
Thank you so much! Thankfully You answered that question before drilling.
 
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