Cov txheej txheem ntawm kev ua stainless hlau seamless yeeb nkab: 1, steelmaking → 2, dov round steel → 3, perforation (annealing) → 4, txias → 5, txias dov (annealing, demagnetization, pickling, tu) → 6, phab ntsa polishing → 7, sab nrauv polishing → 8, cua siab ...
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