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What are the measures to eliminate longitudinal or spiral scratches between the tubes and the tube sheet? Please give me some advice!

2015-12-22View Original

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What are the measures to eliminate longitudinal or spiral scratches between the tubes and the tube sheet? Please give me some advice! It’s better to say more.
Reply #22015-12-26
Drilling the tube sheet with higher precision, and chamfering both sides of the tube holes in the tube sheet should help avoid the situation you mentioned.

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