finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 8369

Pipe (Polypropylene)


(2001)

HI

I HAVE A QUESTION PLEASE ANSWER. PIPE MADE OF POLYPROPYLENE (NOVOLEN 5416) CAN PASS THIS FLUID?

1)PETROL
2)GAS OIL
3)H2SO4
4)HCL
5)WHITE OIL
6)PERFORAL
7)PHENOL (ME.K)

CAN PIPE (POLYPROPYLENE)WORK WITH THIS FLUID?

THANKS

MEHDI HEYDARNEZHAD
- MASHAD-IRAN


(2001)

Hello Mehdi,

Firstly, the resistance of any plastic pipe is dependent on the temperature, the pressure along with the percentage of acids of chemicals. Other factors are UV resistance, water hammer and allowance for thermal expansion which in PP's case is quite high!

1 & 2. Petrol & gasoline are synonymous. nbg.
3. H2S04 OK to 80% @ RT
4. HCl. OK to 150 °F
5. White oil. I don't know what that is. Sounds suspiciously like it is nbg. If you mean White Liquor, it is probably nbg.
6. PERFORAL. No listing.
7. PHENOL OK @ RT.

Secondly, never ever believe any one corrosion chart. Always double check. Thirdly, never believe a chemist! Well, in my experience I have been lead down the path by chief chemists so that if someone says, 'ah, it's chemical X', I say to myself, 'Oh yea?' ... and try to find out more about the process so that they will not have a problem.

Re Sulphuric, use PVC. It's cheaper. It's easier to join. It's UV resistant. It can take full commercial Sulphuric, ie. 93% @ RT.... however at that strength, cemented joints should be backwelded!

I hope that this helps you ... mind you, if you wanted a plastic pipe to accept ALL those chemicals, PVDF might do the job but the weldable fluorocarbons would ... all for a heck of a price, too!

Cheers !

freeman newton portrait
Freeman Newton
White Rock, British Columbia, Canada

(It is our sad duty to
advise that Freeman passed away
April 21, 2012. R.I.P. old friend).



August 3, 2010

What happens to the polypropylene material while it is in petrol & after taken it from petrol for 01 to 02 Hrs (i.e., dimensionally )

Raveen Jha
buyer, product designer - Delhi, India



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.