Tube Wall Reduction for Alloy 825 Tubes
Tube Wall Reduction for Alloy 825 Tubes
(OP)
Can anyone give me a recommendation for the tube wall reduction on SB-163 N08825 tubes? I want to roll my tube to tubesheet joint but not sure what my target tube wall reduction should be (wall reduction measured in percentage of tube wall thickness.
Thanks
Thanks





RE: Tube Wall Reduction for Alloy 825 Tubes
Please answer the following;
1. Tubesheet material?
2. Grooves in the tubesheet?
3. Seal welded after roll expanding?
4. Service application - new construction or in-service re-tube?
5. Are you going to qualify a tube rolling procedure?
RE: Tube Wall Reduction for Alloy 825 Tubes
1. tubesheet material: SA-387 Gr 11 Cl 2
2. No grooves
3. strength welded tubes
4. new construction
5. test fixture per Artcle F-3 ASME Code
thanks
RE: Tube Wall Reduction for Alloy 825 Tubes
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-Christine
RE: Tube Wall Reduction for Alloy 825 Tubes
The key for this job will be to qualify a tube roll/weld procedure using a mock-up and pull tests.