This Malaysian Standard specifies fundamental techniques for radiographic testing of fusion-welded joints in metallic materials. The objective is to obtain satisfactory and repeatable results using the most economical methods. The techniques are based on generally recognised practice and fundamental theory of the subject. This standard applies to testing of fusion-welded joints in plates or pipes1. This standard does not lay down radiographic criteria for acceptance and rejection of the joints, but is concerned with the radiographic techniques to be used.