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Schedule 160 pipe SDH Class


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Posted by B Barnes (207.153.26.105) on November 22, 2002 at 11:09:21:

Hello,

I'm looking for help regarding a pipe class/specification. I need to supply a product that meets the below specification:

The product's pressure rating must meet a pressure rating spec of "SDH". SDH piping class is Sch 160 SMLS 2-1/4 Cr A 335 for 1" NPD.

Obviously the Sch is 160, the product is 2-1/4 Cro-mo, and for a 1" line size but what's the A 335? What does "SDH" mean? What does SMLS mean? This particular line is a steam line with superheated steam running through it and I need to meet the above specs. ANY HELP would be greatly appreciated.

Thanks for your time,
Blaine



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