Journal of Operational Research and Its Applications ( Applied Mathematics ) - Lahijan Azad University

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Khodamoradi M, Behzadi M, Rostamy-MaleKhalifeh M. Evaluating and Ranking the Manufacturers of Refill parts by Hierarchy Analysis process (case study: National Iranian Drilling Company). jor 2018; 15 (1) :29-40
URL: http://jamlu.liau.ac.ir/article-1-1460-en.html

In recent years supply chains have gained the attention of many researchers & industrialists. Within today's competitive market, producers are not only concerned with their internal conditions, but the selection of the best markets together with the best providers. Functioning of the supply chain depends on the vast chain of supplies for providing customer needs, which include ease of customer reach, on time delivery and the required capacity within the chain for suitable performance. Functioning of the supply chain leaves the company boarder's behind. The main materials, parts, sub-assemblies and the final products and their distribution are provided through different channels.

In this research Analytical Hierarchical Protocol (AHP) the important factors in evaluation and ranking of spare parts manufacturers of National Iranian Drilling Company were identified. The important indicators were identified by experts and through pair comparison. These factors were: delivery, services, costs, quality, company capabilities, flexibility, reliability and social commitment. The statistical population for this research was all of the managers, heads and section leaders of the national Iranian Drilling company. One hundred and twenty (120) of these according to cocran formula were randomly selected.

According to the results guarantee and after sale services indicators had the highest importance and the reliability indicator had the lowest importance in the evaluation of the providers.