460 MPa-level low-welding-crack-sensitivity refractory steel with excellent low-temperature toughness and production method thereof
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Production method of non-quenched and tempered high-strength wear-resistant steel for HB 450-grade track shoe
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620 MPa-grade high-performance bridge steel welded at low preheating temperature and preparation method thereof
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HB460 MPa-grade high-strength high-toughness fire-cut crack-resistant wear-resistant steel and production method thereof
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580 MPa-level low-stress corrosion sensitivity steel for ocean engineering and production method thereof
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Niobium-titanium microalloyed HRB500E deformed steel bar and preparation method thereof
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A kind of shallow dephosphorization method of refining of the LF furnace of process for making
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smelting method of high-nitrogen high-sulfur low-aluminum steel
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Method for treating leakage of liquid nitrogen, liquid argon or liquid air in cold box by local sand raking
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High-precision right-angle flat steel continuous rolling process method
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A kind of uniform steel plate of normalizing rolling acquisition longitudinal direction performance and its manufacturing method
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A kind of high-strength steel sheet and its manufacturing method of excellent in low temperature toughness
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A kind of railway steel plate that high-strength low-yield ratio toughness is excellent and its manufacturing method
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A kind of high uniformity super thick structural steel plate and its manufacturing method
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It is a kind of to utilize Wide and Thick Slab finishing mill differential temperature rolling thickness >=60mm carbon constructional quality steel production method
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A kind of plus ferro-silicon nitride HRB600 high-strength hot rolled ribbed steel bar and its manufacturing method
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The ultra-thin anti-ammonia corrosion moving pressure container steel plate of one kind and its production method
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A kind of 530MPa grades of automobile cold stamping axle housing steel plates of high tenacity hot rolling and its manufacturing method
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A kind of ship steel and its manufacturing method that high nitrogen low-alloy low-temperature flexibility is strong
