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Participant

Join Date: Jun 2015
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Rigid Tubing for CNG Transfer Purposes

06/10/2015 12:20 PM

I work at a company called Simple-Fill located in Columbus, OH. We are currently in the process of designing a new type of natural gas compressor. I am looking into buying some rigid tubing that will be use to transfer fluids and compressed natural gas. We want to try and use carbon steel tubing, but are open to other options. We need the Outer Diameter to be 1". The tube thickness can vary, but needs to be able to handle pressures of close to 4500 psi. My first question would be if anyone has suggestions on what type of tubing to use? I was thinking Seamless Carbon Steel with 1" O.D. and at least 0.120" tube thickness. My second question is if anyone knows general pricing/ft for this type of tubing or if they can point me in the direction of companies that sell this type of tubing. The biggest issue with getting quotes has been that we only want to order about 100-200 feet of tubing. Thanks in advance.

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Guru

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#1

Re: Rigid Tubing for CNG transfer purposes

06/10/2015 1:16 PM
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Guru

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#2

Re: Rigid Tubing for CNG transfer purposes

06/10/2015 1:50 PM

The host of this website has an extensive library of products and suppliers.

Go to the link at the top of this page and you can find it all right there.

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#3

Re: Rigid Tubing for CNG transfer purposes

06/10/2015 1:52 PM

All these question can be answered by your local pipe supply company. I'm sure the sales man will be more than happy to supply the answers if he wants to make a sale.

Then again you could have google pipe working ratings too. Found that 3/4" sch 160 black pipe would be a close fit to your specs. Being a little over 1 inch. Other then the comment to transfer fluids. You have to know what is fluid to make a choice in pipe composition.

Now what about the fittings? Standard fittings won't hold that pressure.

Maybe you should hire someone so you don't get yourself in trouble.

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Guru

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#4

Re: Rigid Tubing for CNG transfer purposes

06/10/2015 3:41 PM

Any supplier of hydraulic line and components should be able to set you up with whatever types of hard or flexible lines and fittings you need.

Working at 4500 PSI with hydrocarbon gas/fluids is fairly standard operating conditions in that area.

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Guru

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#5

Re: Rigid Tubing for CNG transfer purposes

06/11/2015 6:23 AM

The amount you want to order should not be a problem. What is perhaps a problem is that you refer to 'tube' and not 'pipe'. Seems like a job for 3/4" (ID) sched 80 pipe to me.

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#6

Re: Rigid Tubing for CNG Transfer Purposes

06/11/2015 11:25 PM

4,500psi is a frequent pressure for tubing. There are any uses for it. The pressure of breathing air cylinders for refilling smaller cylinders is 6,000psi. The tubing for these cascade systems must them be capable of operating at the same or higher pressures.

1st- Look up in the local yellow pages "steel tubing". There are several suppliers in the area or not very far away.

2nd - Check these out:

Columbus and Canton, http://pipevalves.com/

Westerville http://www.swagelok.com/home.aspx

Warrenville, IL http://www.plymouth.com/high-pressure-hydraulic-tubing/

Chesterfield, MO http://www.fedsteel.com/products/carbon-pipe-and-tube/astm-a106-seamless-carbon-steel-pipe.html

Kent and Cincinnati http://www.industrialtube.com/vp/steel_tubing.htm

Columbus http://airgas.com/

Three are in the Columbus area, one up and down I-71 and two in nearby states. Contact them since it is their business. Tech support people there can assist you in your needs and the products available in that section of industry.

Good Luck, Old Salt

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