Looking for standards for pipes and fittings made from GRP.

[Ludwik]

I'm looking for ANSI/ASME standards for pipes, flanges and fittings made from GRP (Glass Reinforced Plastic).
Can I find all needed information about dimension in ASME B16.5 for flanges and ASME B36.10 for pipes?
If not which ANSI/ASME standards should I take?

 

Hello Ludwik,

The list of Standards for non-metallic pipe and fittings is too large to list here. Go to Chapter VII, of B31.3 and look at Table A326.1. This will answer your question.

Also for information, see:

http://www.compositesusa.com/pipe/pipe_specs.htm

Regards, John.

 

[Faruki]

Dear John / Ludwik

Taking advantage of your communication, could you please help in my query below:

"For undergound (buried) GRP line used as Fire Main Ring, with operating pressure of 100 and design pressure of 150 psi, does any code allow for Hydrostaic Testing to be done at design pressure (150 psig) instead of 225 psig (1.5 times the design pressure? In other words, can we have our design pressure as our hydrostatic testing pressure for GRP buried lines used for Fire main ring".

I'll appreciate your response if possible otherwise request you to put this question for the forum.

Thanks
Faruki

 

[stanier]

Genrally hydrotest pressures on pipelines in Europe and Asutralia have been reduced to 1.25 times the design pressure. However the design pressure must take into account surge pressures. These are common place on fire ring mains.

For standards you could try British Standard BS 7194

 

[dave2109]

NFPA 24 requires a hydrostatic test pressure of no less than 200 psig for fire service mains. This may apply to your situation.