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Tailing Pipe Material - What is used in Tar Sands?

Tailing Pipe Material - What is used in Tar Sands?

Tailing Pipe Material - What is used in Tar Sands?

(OP)
As described - what alloys are used?

Service temperature is down to -40°F, with welding to flanges, etc.  Charpy impact toughness is 25 ft-lb minimum.  The main service concern is erosion corrosion.  

(sorry I previously posted this in Corrosion but no responses after two days)

RE: Tailing Pipe Material - What is used in Tar Sands?

The only suggestion I can come up with is the old stand-by in the oil-field, 4130, or some modification of 4130.

If we knew more about what you wanted to know, it would help.  Knowing CVN requirements, without Tensile and Yield, is a bit like knowing the number of miles on a car without knowing it's age.  It's only half the story.

rp

RE: Tailing Pipe Material - What is used in Tar Sands?

I don't know the answer, but as a curiosity I'm confused about what stress this piping would be under at -40 F, aside from the irresistable stress of water freezing inside it?

I can see structural steel, or steel on a gas-filled vessel, needing a design temperature of -40 F in that climate, but surely a pipe carrying a commodity freezing somewhere around 32 F, with the pipe never getting colder than say 0 F, doesn't need to be designed for -40 F?

RE: Tailing Pipe Material - What is used in Tar Sands?

was working a project lately with -40 working temperatures for a machine shaft coupling and the material I was looking into was 8620. The 86xx for tuff, ductile impact use and the xx20 low carbon is for weld ability and reduced HAZ concerns.
The parts were for a BIG snow blower on the Alaskan ice roads.

RE: Tailing Pipe Material - What is used in Tar Sands?

It's been years ago, but I once worked for a company that supplied tailings piping for both Suncor and Syncrude.  At that time, they used both induction hardened pipe and the A106B with weld overlay that we supplied. Sorry I don't know which type and grade they used for the hardened pipe.  I also don't recall there being toughness requirements for the miles of pipe we supplied.  

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