Ductile pipe

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Wicky
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Ductile pipe

Post by Wicky » June 22nd, 2019, 4:45 pm

Hey everyone, got a question about ductile pipe. Come across a chunk of 6 inch ductile pipe for free, not sure if it's a good idea to use for the stack or not.
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jose-da-weldr
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Re: Ductile pipe

Post by jose-da-weldr » June 22nd, 2019, 4:50 pm

Looks like its lined with cement. What are you going to use it for?

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Wicky
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Re: Ductile pipe

Post by Wicky » June 22nd, 2019, 6:49 pm

This is what I found on the internet.Cement mortar lining provides a high pH in the inner surface of ductile iron pipes and it serves as a physical barrier to water to guard against corrosion of iron from acidic water. Moreover, owing to smooth nature of cement lining, it results in the provision of high flow. Wanted to use it for the stack, but don't know if it will flake off. Is there a way to burn and out or something?



jose-da-weldr
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Re: Ductile pipe

Post by jose-da-weldr » June 22nd, 2019, 7:22 pm

The only way of getting the cement off is to break it off, and yes it will flake off if you end up using it. All the heating and cooling causes the iron to expand and contract, so after several uses it will start to break. We use this kind of piping in the oilfield industry. Like you said, it's used for water transfer and the water keeps the cement moist and keep the piping from corroding.

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towtruck
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Re: Ductile pipe

Post by towtruck » June 22nd, 2019, 11:30 pm

Your going to have a difficult time getting that pipe to attach to steel. I would skip even trying to use it for a stack.



Wicky
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Re: Ductile pipe

Post by Wicky » June 23rd, 2019, 4:22 am

Thanks for the advice. Now it will be easier to write out the hurt feelings report for the guy that gave me it. You know how it is when somebody's trying to help out.



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