The dependability of part of the pressure vessel of pipelines and reactors is generally a function of the dimensional accuracy and the metallurgical quality of the flanges. Flange Manufacturers make parts out of carbon steel, stainless steel, and alloy grades as per ASME B16.5, B16.47, and EN 1092-1 standards. These flanges are subjected to machining processes like facing, drilling, and taper boring to ensure the compatibility of the gasket and uniform bolt loading. Generally, forged flanges have yield strengths ranging from 240 to 620 MPa depending on the material grade. Flange manufacturers in India exports a large volume of the flange materials to the USA, Germany, and UAE industries for oil & gas, desalination, and power generation projects, etc. in which NACE MR0175 and PED certification requirements are met. The dimensions vary from 150 to 2500, with the sealing faces like RF, RTJ, or FF depending on the operating pressure and temperature cycles.
Monel 400 and K500 are the two high-nickel alloys which can resist corrosion and withstand the mechanical stress in a marine or chemical environment for a long time. Monel Plate is manufactured by hot or cold rolling, then solution annealing and pickling are done, therefore, the tensile strengths can be more than 550 MPa and the hardness values can reach 95 HRB. Its excellent resistance to hydrofluoric acid and alkalis makes it suitable for heat exchangers, evaporators, and pump components. To meet the demand for uniform grain structure and non-magnetic characteristics in petrochemical, offshore, and defense-grade applications, Italy, Saudi Arabia, and Malaysia are among the countries importing Monel plates from India. The general thickness is between 2 mm-50 mm, and the material meets ASTM B127 and AMS 4544 specifications for accurate fabrication and excellent wear resistance.