IA vs IC pipe

[Whiskeytown]

What is the basis for describing pipes as group IA vs IC? For example, looking at ASTM standard spec F1043-06 for industrial chain link fence framework, the Group IA designation is given to 30000psi steel, where the IC is for 500000 psi steel. So the IC has a lower weight per unit length for the same strength. It would seem that IA or IC could be used interchangeably, and the choice might depend upon price. Anti-corrosive coatings seem to be treated separately, so that there, again, it comes down to price, IC not being inferior to IA. ??

 

[BigInch]

Damn. Wish we could get that 500,000 psi steel for pressure containing pipe.

I think you've got the wrong forum.

"We have a leadership style that is too directive and doesn't listen sufficiently well. The top of the organisation doesn't listen sufficiently to what the bottom is saying." Tony Hayward CEO BP
"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.liv

 

[Whiskeytown]

That would be 50ksi

 

[Whiskeytown]

I uploaded the standard spec I referred to (F1043-06), but to Engineering.com, but it does not show up with the post. Have to figure out this gadget.

 

[Whiskeytown]

"Pipes, Pipelines...": seemed like the right forum.

 

[C2it]

It is the right place for pipelines (unless offshore of course) but for 500,000psi steel you need the 'In Your Dreams' forum.

 

[BigInch]

"Pipelines" shouldn't be a problem including onshore & offshore, above ground & underground, etc. which is why "pipelines" was removed from the former "Offshore Structures & Pipelines Forum" about a year ago.

"We have a leadership style that is too directive and doesn't listen sufficiently well. The top of the organisation doesn't listen sufficiently to what the bottom is saying." Tony Hayward CEO BP
"Being GREEN isn't easy." Kermit

http://www.youtube.com/watch?v=hpiIWMWWVco

http://virtualpipeline.spaces.liv

 

[Whiskeytown]

At the risk of being a bore, I will repeat that 500 K was a typo. With regard to what happened on this forum a year ago, I cannot comment. Thanks for this historical note.

 

[Whiskeytown]

OK, Here is the spec I am referring to. The question is What, if any, downside would there be for substituting IA for IC as supports for chain link fence, as it appears that for the same OD, the wall thickness is such that moment of inertia is about the same for each group?

 

[zdas04]

When they were saying that you were in the wrong forum, I think they were talking about your statement

looking at ASTM standard spec F1043-06 for industrial chain link fence framework

You might get a better answer for chain link fence frameworks in a forum like Metal and Metallurgy Engineering in the Materials group.

David

 

[Whiskeytown]

David,
Thank you for the straight-up response.
John

 

[cvg]

I would suggest Civil/Environmental engineering other topics might be a better forum than mettalurgy. Either type of post may be used, however IA may be more common and easier to procure than IC. See uniform guide specs which allows several options.

Uniform Guide Specs:
a. Provide posts conforming to ASTM F 1083, zinc-coated. Group IA, with external coating Type A steel pipe. Group IC steel pipe, zinc-coated with external coating Type A or Type B and Group II , roll-formed steel sections, meeting the strength and coating requirements of ASTM F 1043 and ASTM A 702. Group III, ASTM F 1043 steel H-section may be used for line posts in lieu of line post shapes specified for the other classes. [Post shall be either Group IA steel
pipe, Group IC, Group II, roll-formed steel sections, or Group III steel H-sections and be zinc coated (Type A) and polyvinyl chloride coated conforming to the requirements of ASTM F 1043.]