QUALITY ASSURANCE Stage and final inspection is carried out as per approved Quality Assurance Plan. Raw material is strictly checked for its conformity to its specification. NDT like RT, UT, PT, MP, & Hydraulic & Pneumatic Test, Pressure Drop Test, Dimensional, Visual, Paint Finish & DFT Check, etc are carried out as per requirement. Filters are supplied under Third party inspection, by PDIL, LRIS, BVIS, ABS, CEIL, IBR, EIL, ICB, TPL, NTPC, UHDE, JH & G, and others as required..