Welding high pressure hydraulic tubing

[minerk]

I'm having trouble finding out what code (ASME, AWS, SAE) applies to welding high pressure (6,000 psi) hydraulic tube assemblies. SAE J518 and ISO 6162 cover the flanges, but I haven't seen anything regarding weld requirements.

Can someone point me in the right direction?

 

[IceStationZebra]

Out of curiosity do you have any info or standards that pertain to 3,000 psi? I am starting to working on a spec for a hydraulic distribution system for my new structures lab. The architect says "no problem, we have done this before." But I want to cover my behind. Thanks, ISZ

 

[budt]

You might find the standards at the National Fluid Power Association web site or at least a way to order them.

http://www.nfpa.com/

Bud Trinkel, Fluid Power Consultant
HYDRA-PNEU CONSULTING

 

[metengr]

Try ASME B31.3 as a guide.

 

[unclesyd]

Here is a supplier of pipe cleaned specifically for hydraulic oil service that references ASME B31.1 for pressures. They have some conditions for welding but not to any specific code or standard. A call might be beneficial.

http://www.redoxinc.com/s_weld.htm