Metal & Mineral Industries

A virtual replacement for Radiography (Cross sectional view of the weld as below) TOFD is safer than Radiography testing and more environmentally friendly. Because No Ionizing radiation is required, the inspection does not interfere with the production process. TOFD inspections can therefore take place in parallel to production work. TOFD known to generally allow for better weld defect identification, location and accurate sizing. TOFD has High probability of detection (POD), Low False Call Rate, High accuracy in flaw sizing. The TOFD technique is a fully computerized and automated system able to scan, store, and evaluate indications in terms of height, length, and position with a grade of accuracy never achieved by other ultrasonic techniques. Thicknesses within the range of 6 to 450 mm can be examined. TOFD examinations are possible to temperatures of up to 250ºC. Acceptable to ASME Sec VIII (Pressure Vessels) & ANSI B 31.3 (Piping) in lieu of Radiography.

Destructive tests are carried out in the laboratory for specific application in close association with international client specifications on materials & welded specimens. Materials shall be certified for grade confirmation based on the evaluation of the test results. Welder performances are evaluated and certified & welding procedures are qualified by incorporating inspection, NDT & mechanical tests in accordance with international standards and client’s requirements. We carry out various mechanical tests like tensile test to find out the physical properties namely yield strength, tensile strength, elongation, reduction of area etc, Charpy impact test on full & sub size specimens to verify the toughness of material, hardness tests- Vickers, Rockwell, Brinell, Knoop at lab and at site, nick break test on materials and weldments. Macro examination of welded specimens is also carried out. We also perform metallographic test for close scrutiny of metallurgical structures of samples by evaluating the microstructure to establish phases on etching and their morphology. Grain size measurement & ferrite content shall be determined by evaluating the microstructure which will be reported with photographic proof. Replica technique is used for metallurgical services at site applications particularly for boiler tubes, heat exchanger tubes etc. Other corrosion tests to check susceptibility to intergranular corrosion, pitting corrosion, hydrogen induced, stress corrosion cracking under Sulphide, chloride atmospheres. Chemical analysis is carried out using wet method or atomic absorption (spectrometer) to determine the percentage of chemical elements present in metals. The major activities are as listed below

TGAC provides advanced glass processing services for commercial, industrial, and architectural applications. Equipped with modern processing technology and capable of handling glass sizes up to 12 x 3.3 meters, the company manufactures high-quality glass products that meet the highest international standards. The service includes precision cutting, processing, finishing, and preparation of glass solutions tailored to project requirements, ensuring durability, safety, and superior visual performance.

Non-destructive testing (NDT) is a testing and analysis technique employed to evaluate the properties of a component and its structure for characteristic differences or welding defects and discontinuities without causing damage to the original part.Our NDT specialists are highly qualified professionals who can assist you in meeting the inspection challenges that arise with complex components or structures and increase the detection of defects. Thus, we provide total quality assurance and help you avoid the loss of time and money due to in-service failure or manufacturing defects in new products or structures.