3 Basic Requirements
3.0.1 The design of finishing process of flat steel shall be based on the actual conditions of the specific flat steel finishing project，with the adoption of applicable technology，process and equipment.
3.0.2 The design of the operation equipment for flat steel finishing process shall follow the principle of being"advanced，applicable，reliable and safe"，and the process operation equipment shall match each other in terms of capacity so as to assure the production process shall be smooth and stable，meet the requirements for product mix，as well as comply with the active national standards with respect to product quality.
3.0.3 The design of flat steel finishing process shall comply with pertinent requirements of the current national standards GB 50506 Code for design of water saving for iron and steel enterprises，GB 50414 Code of design on fire protection and prevention for iron & steel metallurgy enterprises，GB 16297 Comprehensive emission standard of air pollutants，GB 13456 Discharge standard of water pollutants for iron and steel industry，GB 50406 Code for design of environmental protection of iron and steel industry and GB 50405 Code for design of comprehensive utilization of iron and steel industry resources.
3.0.4 The electric drive and automation equipment level of flat steel finishing line shall be fit for the production process requirements and mechanical equipment level；design of automation control system and on-line detection system shall comply with the principle of being"universal，open，highly reliable and fast".
3.0.5 Flat steel rolling mill and auxiliary facilities of flat steel finishing line should be designed by taking all considerations as a whole system.
3.0.6 Iron and steel enterprise must not use backward second-hand flat steel finishing line equipment that has been eliminated at home and abroad.
3.0.7 The designed output of flat steel finishing line should achieve cost-effective production capacity，and the annual working time and load rate of the line shall be properly determined.Main technical and economic index shall reach domestic advanced level，and energy consumption of process procedure shall comply with pertinent requirements of current national standard GB 50632 Code for design of energy saving of iron and steel industry.
3.0.8 Low-noise equipment should be adopted in design；in case of high-noise equipment，sound insulation，sound absorption，noise reduction and other measures shall be takenm，and the noise shall comply with pertinent requirements of current national standard GB J87 Specifications for the design of noise control system in industrial enterprises.