The ARMETAL SARL, created in 1999 by Mr Jean-Noël BLONDEL LA Rougery, is a small rebar manufacturing company. It employs 13 people and has a turnover of EUR 8097735. It was created to isolate the rebar manufacturing activity of ECOMAR (building company), with the aim of developing and improving the rebar manufacturing systems for reinforced concrete and the quality of the final product, reinforced concrete. Indeed, the fact of integrating the profession of archmaster in the wholesale company, makes it possible to adapt the manufacture of reinforcements to the methods of implementation on site. The rebar production of the company Armétal is organised according to demand in order to limit the volumes of finished products stored on the site. Thus, the SARL ARMETAL manufactures its reinforcements mainly on catalogue (85 % of production). The main production operations are as follows: — The training of steel wires for the manufacture of bars – Framing for the manufacture of calipers – Strength welding of bars and calipers to obtain mesh and reinforcements. Scrap is imported in the form of steel wire coils via 25 ton containers (6*25 tonnes per delivery) and the delivery time of the coils varies from two to six months. It is therefore essential for Armétal to build a large stock of raw materials to cope with the hazards of delivery and thus reduce to