U-tube bending radius and annealing standards
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Experts, for which standard-sized U-tubes has a bending radius of ≤100mm, annealing is required? Is there a relationship between annealing and the bending radius? Please let me know, thank you.
Clause 8.10.3 of GB/T151-2014 specifies the situations in which heat treatment is required for U-tubes. Additionally, for high-pressure cold-formed pipes, the bending radius R
I think those upstairs have already solved your problem perfectly. Generally, cold bending generates stress, which can later lead to stress corrosion; the specific bending radius required for stress relief annealing depends on the material and standards； Secondly, it is also necessary to conduct an assessment based on the specific operating conditions of the customer.