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Large-specification free-cutting steel rolling method
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Small-sized round-link chain steel
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Method for smelting steel plate with excellent performance in high-heat-input-welding heat affected zone
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RH vacuum refining method for raising yield of antimony element
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High-strength ultra-thick steel plate and production method thereof
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High-crack-arrest-toughness steel plate with yield strength of 460MPa and production method thereof
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Production method for eliminating surface color difference of cold-rolled sheet
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High-strength and high-tenacity steel plate and manufacturing method thereof
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Electric furnace smelting method of steel for welding wires
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Method for determining bainite transformation temperature in solid-state phase change process
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Regenerative heating furnace and flue gas circulating combustion method thereof
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Characterization method for spatial form and distribution of compound inclusions in steel
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High-speed electroplating technology testing device
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High corrosion-resisting type submerged arc welding wire and weld metal
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Pipeline steel, wide and thick plate, resistant to H2S corrosion, and production method thereof
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K-shaped groove submerged-arc welding technology for good shape of welded plate
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High-strength and high-toughness gas shielded welding wire and weld metal capable of being free of pre-heating
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Wiping type pickling solution for removing high-temperature alloy hot-rolled oxidation layer and application thereof
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Pickle sheet for 400MPa-level automobile structure and production method of pickle sheet
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Gas protection welding wire for super-strength steel and weld metal
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