1Technology Improvement and Analysis for Longitudinal Concave Crack in TS21 Stainless Steel SlabWANG JunhaiProduction Technology1-32Control of Annealing Banded Structure of Heavy Duty Gear SteelLIU Yongchang, YUAN Shujun, GE WenyingProduction Technology4-63Reason Analysis and Improvement Measures for Transverse Crack of Ferritic Stainless Steel in Cold RollingWANG Yongsheng, WANG Hongxia, HE MinProduction Technology7-9,134Quality Defect Analysis and Process Optimization of High Strength Bolt SteelYANG Kaifeng, JIA Peigang, ZHANG LiwuProduction Technology10-135Development and Application of Five-Slitting Rolling Technology for Screw SteelPANG Hailun, ZHENG Wanren, FENG Zhenliang, ZANG Haifeng, SONG YinnianProduction Technology14-166Analysis of Cracks Occurred in Heat Treatment Process of Guide ArmJIANG Chao, ZHU Lei, YANG Dongou, YANG Shangkun, HAO WenquanProduction Technology17-197Development and Application of Five-Slitting Rolling Technology for Φ12mm Hot-Rolled Ribbed BarSONG JiangProduction Technology20-228Automotive Steel Market Status and AnalysisSUN YuleiProduction Technology23-24,279Analysis of Low Temperature Rolling Process in Meishan Steel 1780 mm Hot Strip MillWANG NingningProduction Technology25-2710Formation Mechanism and Control Analysis of Nitrogen Oxides in Hot Blast StoveLIU Hongjun, MA Zhenjun, LIN Guike, ZHU ShengyuanTest Research28-3011Study on TiC Precipitation Behavior and Wear Resistance Mechanism of High Ti Wear Resistant SteelMA Heng, CAO YangTest Research31-3412Studying on Tempering Transformation and Internal Friction for Low Carbon Bainitic SteelCAI Mingyu, WANG Chuanbin, LI DongyueTest Research35-3913Statistical Analysis on the Weight of Coke Index Influencing BF in Laiwu SteelYIN Baolong, CHEN Jianqiao, PANG Shiyan, CHEN YanhuiTest Research40-43,4814Study on Deep Decarburization Technology of RH-MFB for IF SteelLEI HuiTest Research44-4815Adhibition of Waste Heat Recovery Utilization Technology of 2×500m2 Sintering ProcessWU Hongxun, YU LiantaoEnergy Saving and Pollution Reducing49-5016Study on the Purification and Recovery Technology of Blast Furnace Pressure Equalizing GasSUN Yaping, XU Haifang, LI Jianwei, ZHAO JianyuEnergy Saving and Pollution Reducing51-5217Application of Multi-Service Intelligent Cooperative Management and Control System Based on Data Fusion in Iron and Steel EnterpriseYANG HengInformation Construction53-54,5718Application of 5G Technology in Rizhao Company of Shandong Steel GroupCHANG LiangInformation Construction55-5719Reconstruction and Construction of Automatic Batching System for Refractory MaterialsJING Changxu, LI ChunleiInformation Construction58-5920Construction and Application of Competency Model of Enterprise AYIN ZhanhuEconomics Management60-61 