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Solution annealing of U-bend Tp304 tubes

Solution annealing of U-bend Tp304 tubes

Solution annealing of U-bend Tp304 tubes

(OP)
Hi all,
is solution annealing required for seamless Tp304 H/E tubes 3/4" and 1" after U-bending?
Or any other heat treatment?
thank you

RE: Solution annealing of U-bend Tp304 tubes

What is the material specification? For this type of bend radius, I would solution anneal to assure maximum corrosion resistance.

RE: Solution annealing of U-bend Tp304 tubes

(OP)
The material spec is SA213 Tp304 (UNS S 30400), 3/4" and 1" are the tubes' outside diameters and the U-bend radius will be minimum 35mm; maximum U-bend radius will be approx. 120mm.

RE: Solution annealing of U-bend Tp304 tubes

Re-solution anneal the bend regions.

RE: Solution annealing of U-bend Tp304 tubes

Not required by code, but good practice.

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