A new original model of access to welded structures economic production; Design - Material - Technology - Quality model is here presented, explained and demonstrated on the practical case of GMAW (gas metal arc welding) fillet welding 4 mm steel sheets. Together 7 various methods of producing this type of joint were used. Newly experimented welding methods, firstly used on this thickness, and new equipment were applied andcompared with traditional advances, using various technical-economical criteria. Various aspects were combined, with the respect to real conditions of praxis, to reach less costly, easily accessible and acceptable quality solution of this problem. The purpose of this work is to demonstrate that properly chosen and innovative experimented technology has a great influence to finished costs.Keywords: Economic model, welded structures, GMAW, fillet weld, Rapid Arc
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