Bent wire hairpin and rolling mill: what they have in common

1. Step 1. Bent wire hairpin — is part of — Hairpin. An elastic U-shaped wire.
2. Step 2. Hairpin — uses — Elasticity. Elasticity.
3. Step 3. Elasticity — is used in — Beam. Bending.
4. Step 4. Beam — is part of — Overhead crane. An overhead crane runs along a beam bridge under the workshop roof.
5. Step 5. Overhead crane — is part of — Steel works. Overhead cranes.
6. Step 6. Steel works — has part — Rolling mill. Rolling mills.

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