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‘Welding’, the simple and excellent process joining of two similar and dissimilar metals of plates and other structure.50% of gross national product of the country is related to welding .Almost everything is made of metal is welded. Welding process includes arc welding, gas welding, and resistance welding (40 total process of welding exist).The most important factor of welding operation is tensile strength of welding joint under variable environmental and working conditions. .So by the experimental and analytical testing is done by the study of overlap length size and gap size are to be selected to evaluate the welded joint of tensile strength. The range of parameters is selected from the literature. For greater accuracy and test of specimen by making of holding device which will the specimen by UTM machine.The result is obtained by experimentation compare with result is evaluated by simulation. By the simulation and experimental observation to fix the length of overlap size is 25mm for 5mm thick plate recommended for minimum gap size. This will give maximum tensile strength.
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