Promtech chemicals supplies offers liquid red dye penetrant chemicals. These penetrant chemicals , which are extensively used as one the most reliable and fairly economical methods of non-destructive testing for the detection of very minute surface cracks, pinholes, deformities in all types of structural and welded steels, boiler tubes, condenser tubes and turbine and power generation equipment. This non-destructive method of testing is used on site, as well as on the shop floor, and is independent of shapes/curves of the substrate. These chemicals find their applications in the equipment used for nuclear applications. The products range include: dye penetrant testing are manufactured so as to sufficiently be free of these elements to render them acceptable, conforming to the requirement of is 3658 1981, is 12889 and astm e 165 80.
To penetrate the minute of the cracks/pinholes, tthese chemicals are formulated, so as to penetrate the minute of the cracks/pinholes, by an excellent capillary action and shall have the sensitivity to detect all the cracks/defects completely. Following are some general features of these chemicals which include: red colour of the penetrant, which is adsorbed in the cracks/pinholes, is then blotted by the spray of the developer, thereby giving a high degree of contrast against white developer background and the colour is easily distinguishable; a . A very small residual amount of sulphur or chlorine even at ppm levels, is highly objectionable on surface. This is especially applicable to the equipment used for nuclear applications. The products in this range of dye penetrant testing are manufactured so as to sufficiently be free of these elements to render them acceptable, conforming to the requirement of is 3658 1981, is 12889 and astm e 165 80.
