The growing demands for goods, which has been accompanied with a negative effect on the environment and society as it escalates the environmental social disasters, has led to the increased pressure on supply chains to be sustainable.Due to the significance of sustainability, this study attempted to investigate the drivers of sustainable supply chain Management through proposing a conceptual model based on six hypotheses. An 18-item questionnaire were completed by 91 experts in the industry, the results of which were analysed using the partial least square-path modelling. The results of path modelling indicated that green product development is effective on the social issue through the environmental performance management and the green supply chain management. Moreover, the environmental performance management was found to be directly affected by the green supply chain management. Consequently, some implications were suggested regarding the significance of sustainable supply chain management and the manager's practice. KEYWORDS environmental performance management, green product development, green supply chain management, social issue, sustainable development, sustainable supply chain management

PurposeThe purpose of this study is to determine the extent to which institutional pressures affect supplier and customer collaboration and how collaboration explains green supply chain performance using institutional and stakeholder theories.Design/methodology/approachThe paper builds on empirical evidence gathered from responses of Iranian industrial managers based on a self-administered survey. The hypotheses in the conceptual model are tested using Smart-PLS (partial least square).FindingsThe results provide evidence that regulatory requirements and internal motivators, as institutional pressure, enable customer and supplier collaboration. Furthermore, customer collaboration has a positive effect on supplier collaboration and, consequently, positively affects environmental and economic performance. But supplier collaboration is just positively affecting environmental performances and is not effective on economic performance.Research limitations/implicationsThe subject is that the study is a questionnaire-based survey, and the validity and reliability of the results are influenced by the respondents' idiosyncrasies. This study provides a comprehensive model of drivers, supply chain collaboration and performance in the context of the industry sector. The study contributes by providing empirical data with a focus on customer and supplier collaboration and their interrelationship in GSCM modelling.Originality/valueThe current paper is one of the new field of research which demonstrate the significance of customer and supplier collaboration with each other to attain green performance. It also contributes to show the effect of institutional pressure on the customer-supplier collaboration that fosters green performance in the supply chain.

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Nowadays, environmental issues are considered as the most important factor for competition. In this era, just modern companies can compete with each other and any environment friendly firm plays essential role in gaining more market share. Besides, the 21 st century is the era of modern steel and Iranian iron steel industry plays important role in the domestic and international trade only through emphasizing on protection of environment. Therefore, designing a model for strengthening the environmental performance in steel industries is necessary to get some advantages such as energy saving, reducing pollutants, eliminating (declining) of waste, creating value for customers and improving the productivity. In this research, first, we explain green supply chain management and then grey-based DEMATEL Technique is used to identify different factors influencing the green supply chain. Eventually, the green supply chain model (GSCM) is applied for the steel industry. The result determines the most prominence factors of GSCM in Yazd Steel Industry.